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Kafe 바로가기국가/구분 | United States(US) Patent 등록 |
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국제특허분류(IPC7판) |
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출원번호 | US-0770076 (2004-02-02) |
등록번호 | US-7281329 (2007-10-16) |
발명자 / 주소 |
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출원인 / 주소 |
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인용정보 | 피인용 횟수 : 5 인용 특허 : 394 |
The present invention relates to a method for fabricating a roller follower assembly, comprising the steps of fabricating a lash adjuster body, fabricating a roller follower body, fabricating a leakdown plunger, fabricating a socket, wherein at least one of the lash adjuster body, roller follower bo
The present invention relates to a method for fabricating a roller follower assembly, comprising the steps of fabricating a lash adjuster body, fabricating a roller follower body, fabricating a leakdown plunger, fabricating a socket, wherein at least one of the lash adjuster body, roller follower body, leakdown plunger, and socket is fabricated at least in part by forging.
What is claimed is: 1. A method of fabricating a roller follower assembly, comprising the steps of: a) fabricating a roller follower body, comprising the steps of: i) providing a first rod; ii) cold forming a first roller cavity into the first rod to provide the first roller cavity with a first inn
What is claimed is: 1. A method of fabricating a roller follower assembly, comprising the steps of: a) fabricating a roller follower body, comprising the steps of: i) providing a first rod; ii) cold forming a first roller cavity into the first rod to provide the first roller cavity with a first inner roller surface; iii) enclosing at least a portion of the first roller cavity within an outer roller surface; iv) configuring the first inner roller surface to house a roller; v) cold forming a second roller cavity into the first rod to provide the second roller cavity with a second inner roller surface; vi) enclosing at least a portion of the second roller cavity within the outer roller surface; vii) configuring the second inner roller surface to house a leakdown plunger; b) fabricating the leakdown plunger, comprising the steps of: i) providing a second rod; ii) cold forming an inner plunger surface into the second rod to provide a chamber; iii) cold forming a first plunger opening into the second rod; iv) configuring the first plunger opening to accommodate a valve insert; v) cold forming a second plunger opening into the second rod; vi) configuring the second plunger opening to cooperate with a socket; vii) fabricating an outer plunger surface; viii) configuring the outer plunger surface for insertion into the roller follower body; ix) enclosing at least a portion of the inner plunger surface within the outer plunger surface; x) configuring the inner plunger surface to define a chamber; c) fabricating the socket, comprising the steps of: i) fabricating a first socket surface; ii) configuring the first socket surface to accommodate a push rod; iii) fabricating a second socket surface; iv) configuring the second socket surface to cooperate with the leakdown plunger; v) fabricating an outer socket surface; vi) fabricating a passage; and d) at least one of the first roller cavity, the second roller cavity, the first plunger opening, the second plunger opening, the outer plunger surface, the inner plunger surface, the first socket surface, the second socket surface, the outer socket surface, and the passage is fabricated at least in part through forging. 2. The method of claim 1, further comprising providing a lash adjuster body, including the steps of: a) providing a third rod; b) cold forming a lash adjuster cavity into the third rod; and c) providing the lash adjuster cavity with an inner lash adjuster surface. 3. The method of claim 2, further comprising the steps of: (a) enclosing at least a portion of the lash adjuster cavity within an outer lash adjuster surface, (b) configuring the inner lash adjuster surface to accommodate the leakdown plunger, (c) configuring the second inner roller surface to house the lash adjuster body; (d) configuring the outer plunger surface for insertion into the lash adjuster body; and wherein at least one of the steps of: providing the lash adjuster cavity with the inner lash adjuster surface; enclosing at least a portion of the lash adjuster cavity within the outer lash adjuster surface; configuring the inner lash adjuster surface to accommodate the leakdown plunger; enclosing at least a portion of the first roller cavity within an outer roller surface, configuring the first inner roller surface to house the roller, enclosing at least a portion of the second roller cavity within the outer roller surface, configuring the second inner roller surface to house the lash adjuster body, configuring the first plunger opening to accommodate the valve insert, configuring the second plunger opening to cooperate with the socket, configuring the outer plunger surface for insertion into the lash adjuster body, enclosing at least a portion of the inner plunger surface within the outer plunger surface, configuring the inner plunger surface to define the chamber, configuring the first socket surface to accommodate the push rod, configuring the second socket surface to cooperate with the leakdown plunger is accomplished at least in part through cold forming. 4. The method of claim 2, and wherein at least one of the steps of: (a) enclosing at least a portion of the lash adjuster cavity within an outer lash adjuster surface; (b) configuring the inner lash adjuster surface to accommodate the leakdown plunger; (c) enclosing at least a portion of the first roller cavity within an outer roller surface; (d) configuring the first inner roller surface to house a cylindrical insert; (e) enclosing at least a portion of the second roller cavity within the outer roller surface; (f) configuring the second inner roller surface to house the lash adjuster body; (g) configuring the first plunger opening to accommodate the valve insert; (h) configuring the second plunger opening to cooperate with the socket; (i) configuring the outer plunger surface for insertion into the lash adjuster body; (j) enclosing at least a portion of the inner plunger surface within the outer plunger surface; (k) configuring the inner plunger surface to define the chamber; (l) configuring the first socket surface to accommodate the push rod; (m) configuring the second socket surface to cooperate with the leakdown plunger; (n) enclosing at least a portion of the lash adjuster cavity within an outer lash adjuster surface; (o) configuring the inner lash adjuster surface to accommodate the leakdown plunger; (p) configuring the second inner toilet surface to house the lash adjuster body; and (q) configuring the outer plunger surface for insertion into the lash adjuster body is accomplished at least in part through cold forming. 5. A method of fabricating a roller follower assembly, comprising the steps of: a) fabricating a roller follower body, comprising the steps of: i) cold forming a first roller cavity; ii) enclosing at least a portion of the first roller cavity within an outer roller surface; iii) providing the first roller cavity with a first inner roller surface; iv) configuring the first inner roller surface to accommodate a cylindrical insert; v) cold forming a second roller cavity; vi) enclosing at least a portion of the second roller cavity within the outer roller surface; vii) machining, at least in part, the second roller cavity to provide a second inner roller surface; viii) configuring the second inner roller surface to house a leakdown plunger; ix) machining, at least in part, the outer roller surface to provide a generally cylindrical roller surface located adjacent to a frusto-conical roller surface; b) fabricating the leakdown plunger, comprising the steps of: i) cold forming a first plunger opening; ii) configuring the first plunger opening to accommodate a valve insert; iii) cold forming a second plunger opening; iv) configuring the second plunger opening to cooperate with a socket; v) cold forming, at least in part, an outer plunger surface; vi) machining, at least in part, the outer plunger surface for insertion into the roller follower body; vii) enclosing at least a portion of an inner plunger surface within the outer plunger surface; viii) configuring the inner plunger surface to define a chamber; c) fabricating the socket, comprising the steps of: i) cold forming a first socket surface; ii) configuring the first socket surface to cooperate with a push rod; iii) cold forming a second socket surface; iv) configuring the second socket surface to cooperate with the leakdown plunger; v) fabricating an outer socket surface; vi) configuring the outer socket surface to cooperate with the leakdown plunger; and vii) fabricating a passage. 6. The method of claim 5, wherein at least one of the first inner roller surface, and the second inner roller surface is provided at least in part through forging. 7. The method of claim 5, wherein at least one of the steps of: configuring the first plunger opening to accommodate the valve insert, configuring the second plunger opening to cooperate with the socket, enclosing at least a portion of the inner plunger surface within the outer plunger surface, configuring the inner plunger surface to define the chamber, configuring the first socket surface to accommodate the push rod, and configuring the second socket surface to cooperate with the leakdown plunger is accomplished at least in part through cold forming. 8. The method of claim 5, wherein at least one of the first roller cavity, the first inner roller surface, and the second inner roller surface is provided at least in part through forging and wherein at least one of the steps of: enclosing at least a portion of the first roller cavity within the outer roller surface, configuring the first inner roller surface to house the cylindrical insert, enclosing at least a portion of the second roller cavity within the outer roller surface, configuring the second inner roller surface to house the leakdown plunger, configuring the first plunger opening to accommodate the valve insert, configuring the second plunger opening to cooperate with the socket, configuring the outer plunger surface for insertion into the roller follower body, enclosing at least a portion of the inner plunger surface within the outer plunger surface, configuring the inner plunger surface to define the chamber, configuring the first socket surface to cooperate with the push rod, configuring the second socket surface to cooperate with the leakdown plunger, and configuring the outer socket surface to cooperate with the leakdown plunger is accomplished at least in part through forging. 9. A method of fabricating a roller follower assembly, comprising the steps of: a) fabricating a roller follower body, comprising the steps of: i) providing a first rod; ii) cold forming a roller cavity into the first rod; iii) enclosing at least a portion of the roller cavity within an outer roller surface; iv) machining, at least in part, the roller cavity to provide an inner roller surface that includes a plurality of cylindrical surfaces with a plurality of diameters; v) providing the first rod with an end that includes a plurality of walls; vi) providing the roller follower body with a transition opening that links the roller cavity with the walls; vii) dimensioning the walls of the roller follower body to accommodate a roller; viii) machining, at least in part, the outer roller surface to provide a plurality of cylindrical roller surfaces wherein at least one of the cylindrical roller surfaces is located adjacent to a frusto-conical roller surface; b) fabricating a leakdown plunger, comprising the steps of: i) providing a second rod; ii) cold forming a first plunger opening into the second rod; iii) configuring the first plunger opening to accommodate a valve insert; iv) cold forming a second plunger opening into the second rod; v) configuring the second plunger opening to cooperate with a socket; vi) cold forming the second rod to provide, at least in part, an outer plunger surface; vii) configuring the outer plunger surface for insertion into the roller follower body; viii) enclosing at least a portion of an inner plunger surface within the outer plunger surface; ix) configuring the inner plunger surface to define a chamber; c) fabricating the socket, comprising the steps of: i) providing a third rod; ii) cold forming a first socket surface into the third rod; iii) configuring the first socket surface to accommodate a push rod; iv) cold forming a second socket surface into the third rod; v) configuring the second socket surface to cooperate with the leakdown plunger; vi) cold forming the third rod to provide, at least in part, an outer socket surface; vii) configuring the outer socket surface to cooperate with the inner roller surface of the roller follower body; and viii) fabricating a passage. 10. The method of claim 9, wherein the roller cavity is provided with the inner roller surface at least in part through cold forming. 11. The method of claim 9, wherein at least one of the steps of: (a) configuring the first plunger opening to accommodate with the valve insert and (b) enclosing at least a portion of the inner plunger surface within the outer plunger surface is accomplished at least in part through forging. 12. The method of claim 9, wherein the roller cavity is provided with the inner roller surface at least in part through forging and wherein at least one of the steps of: (a) configuring the first plunger opening to accommodate the valve insert, (b) configuring the second plunger opening to cooperate with the socket, and (c) configuring the outer plunger surface for insertion into the roller follower body is accomplished at least in part through forging. 13. A method of fabricating a roller follower assembly, comprising the steps of: a) fabricating a roller follower body, comprising the steps of: i) providing a forgeable material; ii) cold forming the forgeable material so that the forgeable material is provided with a first end and a second end; iii) cold forming the forgeable material, at least in part, to provide a plurality of roller walls at the first end; iv) cold forming the forgeable material to provide, at least in part, an outer roller surface; v) configuring the roller walls to accommodate a roller; vi) cold forming a roller cavity into the second end of the forgeable material; vii) enclosing at least a portion of the roller cavity within the outer roller surface; viii) machining, at least in part, the roller cavity to provide an inner roller surface; ix) configuring the inner roller surface to house a leakdown plunger; x) machining, at least in part, the outer roller surface to provide a cylindrical roller surface; b) fabricating the leakdown plunger, comprising the steps of: i) cold forming a first plunger opening; ii) configuring the first plunger opening to accommodate a valve insert; iii) cold forming a second plunger opening; iv) configuring the second plunger opening to cooperate with a socket; v) cold forming, at least in part, an outer plunger surface; vi) configuring the outer plunger surface for insertion into the inner roller surface of the roller follower body; vii) cold forming, at least in part, an inner plunger surface within the outer plunger surface; viii) configuring the inner plunger surface to define a chamber; c) fabricating the socket, comprising the steps of: i) cold forming a first socket surface; ii) configuring the first socket surface to cooperate with a push rod; iii) cold forming a second socket surface; iv) configuring the second socket surface to cooperate with the leakdown plunger; v) cold forming an outer socket surface; vi) configuring the outer socket surface to cooperate with the inner roller surface of the roller follower body; and vii) fabricating a passage. 14. The method of claim 13, wherein at least one of the first inner roller surface and the second inner roller surface is provided at least in part through forging. 15. The method of claim 13, wherein at least one of the steps of: enclosing at least a portion of the roller cavity within the outer roller surface, configuring the roller walls to accommodate the roller, and configuring the inner roller surface to house the leak down plunger is accomplished at least in part through forging. 16. The method of claim 13, wherein the inner roller surface is provided at least in part through forging and wherein at least one of the steps of: enclosing at least a portion of the roller cavity within the outer roller surface, configuring the inner roller surface to house the leakdown plunger, and configuring the roller walls to accommodate the roller is accomplished at least in part through forging. 17. A method of fabricating a roller follower assembly, comprising the steps of: a) fabricating a roller follower body, comprising the steps of: i) providing a first rod of forgeable material; ii) cold forming the first rod to provide a first end and a second end; iii) cold forming the first end of the first rod to provide a plurality of roller walls; iv) configuring the roller walls to house a roller; v) cold forming a roller cavity into the second end of the first rod of forgeable material; vi) enclosing at least a portion of the roller cavity within an outer roller surface; vii) machining, at least in part, the roller cavity to provide an inner roller surface; viii) configuring the inner roller surface to accommodate a leakdown plunger; b) fabricating the leakdown plunger, comprising the steps of: i) providing a second rod of forgeable material; ii) cold forming a first plunger opening into the second rod; iii) configuring the first plunger opening to accommodate a valve insert; iv) cold forming a second plunger opening into the second rod; v) cold forming, at least in part, an inner plunger surface into the second rod; vi) configuring the second plunger opening to cooperate with a socket; vii) fabricating an outer plunger surface; viii) configuring the outer plunger surface for insertion into the roller follower body; ix) enclosing at least a portion of the inner plunger surface within the outer plunger surface; x) configuring the inner plunger surface to define a chamber; c) fabricating the socket, comprising the steps of: i) providing a third rod of forgeable material; ii) cold forming a first socket surface into the third rod so that the first socket surface cooperates with a push rod; iii) cold forming a second socket surface into the third rod so that the second socket surface cooperates with the leakdown plunger; iv) cold forming an outer socket surface so that the outer socket surface cooperates with the inner roller surface of the roller follower body; v) heat treating the socket; and vi) fabricating a passage. 18. The method of claim 17, wherein at least one of the steps of configuring the first plunger opening to accommodate the valve insert, configuring the second plunger opening to cooperate with the socket, configuring the outer plunger surface for insertion into the roller follower body, enclosing at least a portion of the inner plunger surface within the outer plunger surface, and configuring the inner plunger surface to define the chamber is accomplished at least in part through forging. 19. A method of fabricating a roller follower assembly, comprising the steps of: a) fabricating a roller follower body, comprising the steps of: i) providing a first rod of forgeable material; ii) cold forming the first rod to provide a first end and a second end; iii) cold forming the first end of the first rod to provide a plurality of roller walls; iv) configuring the roller walls to house a cylindrical insert; v) cold forming a roller cavity, at least in part, into the second end of the first rod of forgeable material; vi) enclosing at least a portion of the roller cavity within an outer roller surface; vii) machining, at least in part, the roller cavity to provide an inner roller surface that is configured to accommodate a leakdown plunger; viii) cold forming, at least in part, an undercut surface into the outer roller surface so that the undercut surface is located at the second end of the first rod; b) fabricating the leakdown plunger, comprising the steps of: i) providing a second rod of forgeable material; ii) cold forming a first plunger opening into the second rod; iii) configuring the first plunger opening to accommodate a valve insert; iv) cold forming a second plunger opening into the second rod; v) cold forming, at least in part, an inner plunger surface into the second rod; vi) configuring the second plunger opening to cooperate with a socket; vii) fabricating an outer plunger surface; viii) configuring the outer plunger surface for insertion into the roller follower body; ix) enclosing at least a portion of the inner plunger surface within the outer plunger surface; x) configuring the inner plunger surface to define a chamber; c) fabricating the socket, comprising the steps of: i) providing a third rod of forgeable material; ii) cold forming a first socket surface into the third rod so that the first socket surface cooperates with a push rod; iii) cold forming a second socket surface into the third rod so that the second socket surface cooperates with the leakdown plunger; iv) cold forming the third rod to provide an outer socket surface; and v) fabricating a passage. 20. The method of claim 19, wherein at least one of the steps of: configuring the first socket surface to accommodate the push rod, configuring the second socket surface to cooperate with the leakdown plunger, and configuring the outer socket surface to cooperate with the inner roller surface is accomplished at least in part through forging. 21. A method of fabricating a roller follower assembly, comprising the steps of: a) fabricating a roller follower body, comprising the steps of: i) providing a first rod of forgeable material; ii) cold forming the first rod to provide a first end and a second end; iii) cold forming the first end of the first rod to provide a plurality of roller walls; iv) configuring the roller walls to house a roller; v) cold forming a roller cavity into the second end of the first rod of forgeable material; vi) enclosing at least a portion of the roller cavity within an outer roller surface; vii) machining, at least in part, the roller cavity to provide an inner roller surface; viii) configuring the inner roller surface to accommodate a leakdown plunger; ix) cold forming, at least in part, a well into the inner roller surface; b) fabricating the leakdown plunger, comprising the steps of: i) providing a second rod of forgeable material; ii) cold forming a first plunger opening into the second rod; iii) configuring the first plunger opening to accommodate a valve insert; iv) cold forming a second plunger opening into the second rod; v) cold forming, at least in part, an inner plunger surface into the second rod; vi) configuring the second plunger opening to cooperate with a socket; vii) fabricating an outer plunger surface; viii) configuring the outer plunger surface for insertion into the roller follower body; ix) enclosing at least a portion of the inner plunger surface within the outer plunger surface; x) configuring the inner plunger surface to define a chamber; c) fabricating the socket, comprising the steps of: i) providing a third rod of forgeable material; ii) cold forming a first socket surface into the third rod so that the first socket surface cooperates with a push rod; iii) cold forming a second socket surface into the third rod so that the second socket surface cooperates with the leakdown plunger; iv) cold forming an outer socket surface so that the outer socket surface cooperates with the inner roller surface of the roller follower body; and v) fabricating a passage. 22. The method of claim 21, further comprising the step of: heat treating any one of the roller follower body, the leakdown plunger, and the socket. 23. The method of claim 21, wherein the inner roller surface is provided at least in part through machining. 24. The method of claim 21, wherein at least one of the steps of: (a) enclosing at least a portion of the roller cavity within the outer roller surface; (b) configuring the inner roller surface to accommodate the socket, the leakdown plunger, and the valve insert; (c) configuring the plurality of roller walls to accommodate the roller; (d) configuring the first plunger opening to accommodate the valve insert; (e) configuring the second plunger opening to cooperate with the socket; (f) configuring the outer plunger surface for insertion into the roller follower body; (g) enclosing at least a portion of the inner plunger surface within the outer plunger surface; (h) configuring the inner plunger surface to define the chamber; (i) configuring the first socket surface to cooperate with the push rod; (j) configuring the second socket surface to cooperate with the leakdown plunger; and (k) configuring the outer socket surface to cooperate with the inner roller surface of the roller follower body is accomplished at least in part through machining. 25. The method of claim 21, wherein the inner roller surface is provided at least in part through machining and wherein at least one of the steps of: (a) enclosing at least a portion of the roller cavity within the outer roller surface, (b) configuring the plurality of roller walls to house the toiler, (c) configuring the first plunger opening to accommodate the valve insert, (d) configuring the second plunger opening to cooperate with the socket, (e) configuring the outer plunger surface for insertion into the roller follower body, (f) enclosing at least a portion of the inner plunger surface within the outer plunger surface, (g) configuring the inner plunger surface to define the chamber, (h) configuring the first socket surface to cooperate with the push rod; (i) configuring the second socket surface to cooperate with the leakdown plunger; and (j) configuring the outer socket surface to cooperate with the inner roller surface of the roller follower body is accomplished at least in part through machining. 26. The method of claim 21, wherein at least one of the inner roller surface and the plurality of roller walls is provided at least in part through forging. 27. The method of claim 21, wherein at least one of the steps of: enclosing at least a portion of the roller cavity within the outer roller surface, configuring the second plunger opening to cooperate with the socket, the leakdown plunger, and the valve insert, configuring the plurality of toilet walls to house the roller, configuring the inner roller surface to accommodate the leakdown plunger, configuring the first plunger opening to accommodate the valve insert, configuring the second plunger opening to cooperate with the socket, configuring the outer plunger surface for insertion into the roller follower body, enclosing at least a portion of the inner plunger surface within the outer plunger surface, configuring the inner plunger surface to define the chamber, configuring the first socket surface to cooperate with the push rod, configuring the second socket surface to cooperate with the leakdown plunger, and configuring the outer socket surface to cooperate with the inner roller surface of the roller follower body is accomplished at least in part through cold forming. 28. The method of claim 21, wherein the inner roller surface, is provided at least in part through cold forming and wherein at least one of the steps of: enclosing at least a portion of the roller cavity within the outer roller surface, configuring the inner roller surface to accommodate the socket, the leakdown plunger, and the valve insert, configuring the plurality of walls to house the roller, configuring the inner roller surface to accommodate the leakdown plunger, configuring the first plunger opening to accommodate the valve insert, configuring the second plunger opening to cooperate with the socket, configuring the outer plunger surface for insertion into the roller follower body, enclosing at least a portion of the inner plunger surface within the outer plunger surface, configuring the inner plunger surface to define the chamber, configuring the first socket surface to cooperate with the push rod, configuring the second socket surface to cooperate with the leakdown plunger, and configuring the outer socket surface to cooperate with the inner roller surface of the roller follower body is accomplished at least in part through machining. 29. The method of claim 21, wherein the inner roller surface is provided at least in part through machining and cold forming. 30. The method of claim 21, wherein at least one of the steps of: enclosing at least a portion of the roller cavity within the outer roller surface, configuring the roller adjuster surface to accommodate the socket, the leakdown plunger, and the valve insert, enclosing at least a portion of the roller walls within the outer roller surface, configuring the plurality of walls to house the roller, configuring the first plunger opening to accommodate the valve insert, configuring the second plunger opening to cooperate with the socket, configuring the outer plunger surface for insertion into the roller follower body, enclosing at least a portion of the inner plunger surface within the outer plunger surface, configuring the inner plunger surface to define the chamber, configuring the first socket surface to cooperate with the push rod, configuring the second socket surface to cooperate with the leakdown plunger, and configuring the outer socket surface to cooperate with the inner roller surface of the roller follower body is accomplished at least in part through machining and forging. 31. The method of claim 21, wherein the inner roller surface is provided at least in part through cold forming and machining and wherein at least one of the steps of: enclosing at least a portion of the roller cavity within the outer roller surface, configuring the inner roller surface to accommodate the socket, the leakdown plunger, and the valve insert, enclosing at least a portion of the roller cavity within the outer roller surface, configuring the plurality of walls to house the roller, configuring the inner roller surface to accommodate the leakdown plunger, configuring the first plunger opening to accommodate the valve insert, configuring the second plunger opening to cooperate with the socket, configuring the outer plunger surface for insertion into the roller follower body, enclosing at least a portion of the inner plunger surface within the outer plunger surface, configuring the inner plunger surface to define the chamber, configuring the first socket surface to cooperate with the push rod, configuring the second socket surface to cooperate with the leakdown plunger, and configuring the outer socket surface to cooperate with the inner roller surface of the roller follower body is accomplished at least in part through machining and forging. 32. The method of claim 21, wherein the inner roller surface is provided at least in part through forging and wherein at least one of the steps of: configuring the inner roller surface to accommodate the socket, the leakdown plunger, and the valve insert, enclosing at least a portion of the roller cavity within the outer roller surface, configuring the plurality of roller walls to house the roller, enclosing at least a portion of the roller cavity within the outer roller surface, configuring the inner roller surface to house the leakdown plunger, configuring the first plunger opening to accommodate the valve insert, configuring the second plunger opening to cooperate with the socket, configuring the outer plunger surface for insertion into the roller follower body, enclosing at least a portion of the inner plunger surface within the outer plunger surface, configuring the inner plunger surface to define the chamber, configuring the first socket surface to cooperate with the push rod, configuring the second socket surface to cooperate with the leakdown plunger, and configuring the outer socket surface to cooperate with the roller adjuster surface of the roller follower body is accomplished at least in part through machining. 33. The method of claim 21, wherein the inner roller surface is provided at least in part through machining and wherein at least one of the steps of: configuring the inner roller surface to accommodate the socket, the leakdown plunger, and the valve insert, enclosing at least a portion of the roller cavity within the outer roller surface, configuring the plurality of roller walls to house the roller, enclosing at least a portion of the roller walls within the outer roller surface, configuring the inner roller surface to house the leakdown plunger, configuring the first plunger opening to accommodate the valve insert, configuring the second plunger opening to cooperate with the socket, configuring the outer plunger surface for insertion into the roller follower body, enclosing at least a portion of the inner plunger surface within the outer plunger surface, configuring the inner plunger surface to define the chamber, configuring the first socket surface to cooperate with the push rod, configuring the second socket surface to cooperate with the leakdown plunger, and configuring the outer socket surface to cooperate with the inner roller surface of the roller follower body is accomplished at least in part through forging. 34. The method of claim 21, wherein the inner roller surface is provided at least in part through forging and machining and wherein at least one of the steps of: configuring the plurality of roller walls to house the roller, configuring the first plunger opening to accommodate the valve insert, configuring the second plunger opening to cooperate with the socket, enclosing at least a portion of the inner plunger surface within the outer plunger surface, configuring the inner plunger surface to define the chamber, configuring the first socket surface to cooperate with the push rod, and configuring the second socket surface to cooperate with the leakdown plunger is accomplished at least in part through machining. 35. The method of claim 21, wherein the inner roller surface is provided at least in part through forging and machining and wherein at least one of the steps of: enclosing at least a portion of the roller cavity within the outer roller surface, configuring the plurality of roller walls to house the roller, enclosing at least a portion of the roller cavity within the outer roller surface, configuring the inner roller surface to accommodate the leakdown plunger, configuring the first plunger opening to accommodate the valve insert, configuring the second plunger opening to cooperate with the socket, configuring the outer plunger surface for insertion into the roller follower body, enclosing at least a portion of the inner plunger surface within the outer plunger surface, configuring the inner plunger surface to define the chamber, configuring the first socket surface to cooperate with the push rod, configuring the second socket surface to cooperate with the leakdown plunger, and configuring the outer socket surface to cooperate with the inner roller surface of the roller follower body is accomplished at least in part through forging. 36. The method of claim 21, wherein the inner roller surface is provided at least in part through forging and wherein at least one of the steps of: enclosing at least a portion of the roller cavity within the outer roller surface, configuring the inner roller surface to accommodate the socket, the leakdown plunger, and the valve insert, enclosing at least a portion of the roller walls within the outer roller surface, configuring the roller walls to house the roller, enclosing at least a portion of the roller cavity within the outer roller surface, configuring the inner roller surface to house the leakdown plunger, configuring the first plunger opening to accommodate the valve insert, configuring the second plunger opening to cooperate with the socket, configuring the outer plunger surface for insertion into the roller follower body, enclosing at least a portion of the inner plunger surface within the outer plunger surface, configuring the inner plunger surface to define the chamber, configuring the first socket surface to cooperate with the push rod, configuring the second socket surface to cooperate with the leakdown plunger, and configuring the outer socket surface to cooperate with the inner roller surface of the roller follower body is accomplished at least in part through machining and forging. 37. The method of claim 21, wherein the inner roller surface is provided at least in part through machining and wherein at least one of the steps of: configuring the inner roller surface to accommodate the socket, the leakdown plunger, and the valve insert, enclosing at least a portion of the roller walls within the outer roller surface, configuring the roller walls to accommodate the roller, enclosing at least a portion of the roller cavity within the outer roller surface, configuring the inner roller surface to house the leakdown plunger, configuring the first plunger opening to accommodate the valve insert, configuring the second plunger opening to cooperate with the socket, configuring the outer plunger surface for insertion into the roller follower body, enclosing at least a portion of the inner plunger surface within the outer plunger surface, configuring the inner plunger surface to define the chamber, configuring the first socket surface to cooperate with the push rod, configuring the second socket surface to cooperate with the leakdown plunger, and configuring the outer socket surface to cooperate with an inner lash adjuster surface of a lash adjuster body is accomplished at least in part through machining and forging. 38. A method of fabricating a roller follower assembly, comprising the steps of: a) fabricating a roller follower body, comprising the steps of: i) providing a first rod of forgeable material; ii) cold forming the first rod to provide a first end and a second end; iii) cold forming the first end of the first rod to provide a plurality of roller walls so that the roller walls accommodate a roller; iv) cold forming a roller cavity into the second end of the first rod of forgeable material; v) enclosing at least a portion of the roller cavity within an outer roller surface; vi) machining, at least in part, the roller cavity to provide an inner roller surface; vii) configuring the inner roller surface to accommodate a leakdown plunger; viii) cold forming, at least in part, a well into the inner roller surface ix) cold forming, at least in part, an undercut surface into the outer roller surface so that the undercut surface is located at the second end of the first rod; b) fabricating the leakdown plunger, comprising the steps of: i) providing a second rod of forgeable material; ii) cold forming a first plunger opening into the second rod; iii) configuring the first plunger opening to accommodate a valve insert; iv) cold forming a second plunger opening into the second rod; v) cold forming, at least in part, an inner plunger surface into the second rod; vi) configuring the second plunger opening to cooperate with a socket; vii) fabricating an outer plunger surface; viii) configuring the outer plunger surface for insertion into the roller follower body; ix) enclosing at least a portion of the inner plunger surface within the outer plunger surface; x) configuring the inner plunger surface to define a chamber; c) fabricating the socket, comprising the steps of: i) providing a third rod of forgeable material; ii) cold forming a first socket surface into the third rod so that the first socket surface cooperates with a push rod; iii) cold forming a second socket surface into the third rod so that the second socket surface cooperates with the leakdown plunger; iv) cold forming an outer socket surface so that the outer socket surface cooperates with the inner roller surface of the roller follower body; and v) fabricating a passage. 39. The method of claim 38, wherein at least one of the well, the undercut surface, the first plunger opening, the second plunger opening, the outer plunger surface, the inner plunger surface, the first socket surface, the second socket surface, and the outer socket surface, is provided or fabricated at least in part through machining. 40. The method of claim 38, wherein at least one of the steps of: (a) enclosing at least a portion of the roller cavity within the outer roller surface; (b) configuring the inner roller surface to accommodate the leakdown plunger; (c) configuring the first plunger opening to accommodate the valve insert; (d) configuring the second plunger opening to cooperate with the socket; (e) configuring the outer plunger surface for insertion into the roller follower body; (f) enclosing at least a portion of the inner plunger surface within the outer plunger surface, and (g) configuring the inner plunger surface to define the chamber is accomplished at least in part through machining. 41. The method of claim 38, wherein at least one of the well, the undercut surface, the roller cavity, the first plunger opening, the second plunger opening, the outer plunger surface, the inner plunger surface, the first socket surface, the second socket surface, and the outer socket surface is provided or fabricated at least in part through machining and wherein at least one of the steps of: (a) enclosing at least a portion of the roller cavity within the outer roller surface; (b) configuring the inner roller surface to accommodate the leakdown plunger; (c) configuring the first plunger opening to accommodate the valve insert; (d) configuring the second plunger opening to cooperate with the socket; (e) configuring the outer plunger surface for insertion into the roller follower body; (f) enclosing at least a portion of the inner plunger surface within the outer plunger surface; and (g) configuring the inner plunger surface to define the chamber is accomplished at least in part through machining. 42. The method of claim 38, wherein at least one of the roller cavity, inner roller surface, the outer plunger surface, the inner plunger surface, and the passage is provided at least in part through cold forming. 43. The method of claim 38, wherein at least one of the steps of: (a) enclosing at least a portion of the roller cavity within the outer roller surface; (b) configuring the inner roller surface to accommodate the leakdown plunger; (c) configuring the first plunger opening to accommodate the valve insert; (d) configuring the second plunger opening to cooperate with the socket; (e) configuring the outer plunger surface for insertion into the roller follower body; (f) enclosing at least a portion of the inner plunger surface within the outer plunger surface; and (g) configuring the inner plunger surface to define the chamber is accomplished at least in part through cold forming. 44. The method of claim 38, wherein at least one of the roller cavity, the outer roller surface, the outer plunger surface, and the passage is provided at least in part through cold forming and wherein at least one of the steps of: (a) enclosing at least a portion of the roller cavity within the outer roller surface; (b) configuring the inner roller surface to accommodate the leakdown plunger; (c) configuring the first plunger opening to accommodate the valve insert; (d) configuring the second plunger opening to cooperate with the socket; (e) configuring the outer plunger surface for insertion into the roller follower body; (f) enclosing at least a portion of the inner plunger surface within the outer plunger surface; and (g) configuring the inner plunger surface to define the chamber is accomplished at least in part through cold forming. 45. The method of claim 38, wherein at least one of the well, the undercut surface, the roller cavity, the first plunger opening, the second plunger opening, the outer plunger surface, the inner plunger surface, the first socket surface, the second socket surface, the outer socket surface, the passage, and the inner roller surface is provided or fabricated at least in part through machining and cold forming. 46. The method of claim 38, wherein at least one of the steps of: (a) enclosing at least a portion of the roller cavity within the outer roller surface, (b) configuring the inner roller surface to accommodate the leakdown plunger, (c) configuring the first plunger opening to accommodate the valve insert, (d) configuring the second plunger opening to cooperate with the socket, (e) configuring the outer plunger surface for insertion into the roller follower body, (f) enclosing at least a portion of the inner plunger surface within the outer plunger surface, and (g) configuring the inner plunger surface to define the chamber is accomplished at least in part through machining and cold forming. 47. The method of claim 38, wherein at least one of the well, the undercut surface, the roller cavity, the first plunger opening, the second plunger opening, the outer plunger surface, the inner plunger surface, the first socket surface, the second socket surface, the outer socket surface, the passage, and the inner roller surface is provided or fabricated at least in part through machining and cold forming and wherein at least one of the steps of: (a) enclosing at least a portion of the roller cavity within the outer roller surface, (b) configuring the inner roller surface to accommodate the socket and the leakdown plunger, (c) configuring the first plunger opening to accommodate the valve insert, (d) configuring the second plunger opening to cooperate with the socket, (e) configuring the outer plunger surface for insertion into the roller follower body, and (f) enclosing at least a portion of the inner plunger surface within the outer plunger surface is accomplished at least in part through machining and cold forming. 48. A method for manufacturing an assembly that includes a socket body, a leakdown plunger, and a roller follower body, comprising the steps of: a) providing the socket body that has, at least in part, been cold formed to include a first socket surface, an outer socket surface, and a second socket surface; b) providing the leakdown plunger that has, at least in part, been cold formed to include a first annular plunger surface located at a first end of the leakdown plunger, an inner plunger surface provided with a cylindrical plunger surface that abuts an inner conical plunger surface; c) providing the roller follower body that has, at least in part, been cold formed to include: i) a plurality of roller walls that are configured to accommodate a roller; ii) a second roller cavity that is provided with a second roller surface and a second roller opening wherein a second inner roller surface is provided with a plurality of cylindrical surfaces and configured to accommodate the socket body and the leakdown plunger; and d) assembling the socket body and the leakdown plunger within the roller follower body so that the socket body and the leakdown plunger are located at least in part within the second roller cavity and the second socket surface of the socket body faces the a second annular plunger surface. 49. The method for manufacturing an assembly according to claim 48 further comprising the step of heat treating the socket body, the leakdown plunger and the roller follower body prior to assembling the socket body and the leakdown plunger within the roller follower body so that the socket body and the leakdown plunger are located at least in part within the second roller cavity and the second socket surface of the socket body faces the second annular plunger surface. 50. The method for manufacturing an assembly according to claim 49 further comprising the step of heat treating the toilet follower body prior to machining and assembling the socket body and the leakdown plunger within the roller follower body. 51. The method for manufacturing an assembly according to claim 48 wherein the roller follower body has been provided with a transition opening linking a first roller cavity with the second roller cavity. 52. The method for manufacturing an assembly according to claim 48 further comprising the steps of: a) providing the roller follower body with a transition opening that links a first roller cavity with the second roller cavity; and b) machining the second roller cavity so that a frustoconical roller surface is located adjacent to the transition opening. 53. The method for manufacturing an assembly according to claim 48 wherein a first roller cavity has been cold formed, at least in part, to include: a) a first roller opening and a first inner roller surface that includes a first wall, a second wall, a third wall, a fourth wall, a first angled wall, a second angled wall, a third angled wall, a fourth angled wall, a first angled surface, a second angled surface, a third angled surface, a fourth angled surface, a first curved surface, and a second curved surface, wherein: i) the walls and angled walls extend axially into the body from the first opening and are positioned so that the first wall faces the second wall, the third wall faces the fourth wall, the first angled wall faces the second angled wall, and the third angled wall faces the fourth angled wall; ii) the first curved surface abuts the fourth wall and the second curved surface abuts the third wall; iii) the angled surfaces extend axially into the roller follower body at an angle relative to a plane of one of the angled walls; iv) the first angled surface is located adjacent to the first wall, the fourth wall, the first angled wall, and the first curved surface; v) the second angled surface is located adjacent to the first wall, the third wall, the fourth angled wall, and the second curved surface; vi) the third angled surface is located adjacent to the second wall, the third wall, the second angled wall, and the second curved surface; and vii) the fourth angled surface is located adjacent to the second wall, the fourth wall, the third angled wall, and the first curved surface. 54. A method for manufacturing an assembly that includes a socket body, a leakdown plunger, and a roller follower body, comprising the steps of: a) providing the socket body that has been cold formed to include a first socket surface, an outer socket surface, and a second socket surface, wherein the first socket surface defines a hole; b) providing the leakdown plunger that has been cold formed to include a first annular plunger surface and a second annular plunger surface wherein the first annular plunger surface defines a plunger hole located at a first end of the leakdown plunger, an inner plunger surface with an inner cylindrical plunger surface that abuts an inner conical plunger surface; c) providing the roller follower body that has been cold formed to include a plurality of walls that accommodate a roller and cold formed and machined to include a roller cavity that is provided with a roller surface and a roller opening wherein an inner roller surface is provided with a plurality of cylindrical surfaces and configured to accommodate the socket body and the leakdown plunger; and d) assembling the socket body and the leakdown plunger within the roller follower body so that the socket body and the leakdown plunger are located at least in part within the second roller cavity and the second socket surface of the socket body faces a second annular plunger surface. 55. The method for manufacturing an assembly according to claim 54 further comprising the steps of heat treating the socket body, the leakdown plunger and the roller follower body prior to assembling the socket body and the leakdown plunger within the roller follower body so that the socket body and the leakdown plunger are located at least in part within the second roller cavity and the second socket surface of the socket body faces the second annular plunger surface. 56. The method for manufacturing an assembly according to claim 55 further comprising the step of heat treating the roller follower body prior to machining and assembling the socket body and the leakdown plunger within the roller follower body. 57. The method for manufacturing an assembly according to claim 54 wherein the roller follower body has been provided with a transition opening linking a first roller cavity with the second roller cavity. 58. The method for manufacturing an assembly according to claim 54 further comprising the steps of: a) providing the roller follower body with a transition opening that links a first roller cavity with the second roller cavity; and b) machining the second roller cavity so that a frustoconical roller surface is located adjacent to the transition opening. 59. The method for manufacturing an assembly according to claim 54 wherein the roller follower body has been cold formed, at least in part, to include: a) a first wall, a second wall, a third wall, a fourth wall, a first angled wall, a second angled wall, a third angled wall, a fourth angled wall, a first angled surface, a second angled surface, a third angled surface, a fourth angled surface, a first curved surface, and a second curved surface, wherein: i) the walls and angled walls extend axially into the body from a first opening and are positioned so that the first wall faces the second wall, the third wall faces the fourth wall, the first angled wall faces the second angled wall, and the third angled wall faces the fourth angled wall; ii) the first curved surface abuts the fourth wall and the second curved surface abuts the third wall; iii) the angled surfaces extend axially into the roller follower body an angle relative a plane of one of the angled walls; iv) the first angled surface is located adjacent to the first wall, the fourth wall, the first angled wall, and the first curved surface; v) the second angled surface is located adjacent to the first wall, the third wall, the fourth angled wall, and the second curved surface; vi) the third angled surface is located adjacent to the second wall, the third wall, the second angled wall, and the second curved surface; and vii) the fourth angled surface is located adjacent to the second wall, the fourth wall, the third angled wall, and the first curved surface.
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