[특허]Linear recirculating roller bearing assembly

Gustav Dabringhaus Revocable Trust

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Linear recirculating roller bearing assembly

특허상세정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	F16C-029/06 F16C-029/04
미국특허분류(USC)	308/006.C; 308/006.R
출원번호	US-0402960 (1982-07-29)
발명자 / 주소	Dabringhaus, Gustav H.
출원인 / 주소	Gustav Dabringhaus Revocable Trust
대리인 / 주소	McGlynn, Jr., Gerald E.
인용정보	피인용 횟수 : 8 인용 특허 : 0

초록
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A linear recirculating roller bearing assembly comprises a bearing body having a load bearing surface and a return surface disposed substantially parallel to each other and defining a path for continuous recirculating movement of roller bearings thereabout. A plurality of substantially identical roller bearings are disposed along the path in engagement with the aforementioned surfaces. Each of the roller bearings has a longitudinal axis and includes at least two cylindrical load bearing portions and at least one cylindrical axle portion disposed intermediate the load bearing portions. The portions of each roller bearing are substantially concentric with the longitudinal axis of the latter and the axle portion has a diameter smaller than the diameter of the load bearing portions. A plurality of substantially identical retaining clips operatively interconnect each of the axle portions of adjacent roller bearings to maintain the latter in predetermined spaced relationship with their axes maintained substantially perpendicular to the aforementioned path as the roller bearings circulate thereabout. A rotatable sprocket is provided at one end, and preferably at both ends, of the bearing body to maintain the alignment of the roller bearings substantially perpendicular to their direction of travel along the aforementioned path.

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1. A linear recirculating roller bearing assembly comprising a bearing body having a load bearing surface and a return surface defining a path for continuous recirculating movement of roller bearings thereabout, a plurality of substantially identical roller bearings disposed about said path in engagement with said surfaces, each of said roller bearings having a longitudinal axis and including at least two cylindrical load bearing portions and at least one cylindrical axle portion disposed intermediate said load bearing portions, said portions being substantially concentric with said axis and said axle portion having a smaller diameter than said load bearing portions, and a plurality of substantially identical retaining clips operatively interconnecting each of said axle portions of adjacent roller bearings to maintain the latter in predetermined spaced relationship and their axes substantially perpendicular to said path as said roller bearings travel thereabout, and wherein at least two of said retaining clips are operatively connected to said axle portion of any given one of said roller bearings and to said axle portion of an immediately adjacent roller bearing to one side of said given one of said roller bearings and the remaining retaining clips are disposed between the aforesaid two retaining clips and are operatively connected to said axle portion of an immediately adjacent roller bearing to the other side of said given one of said roller bearings. 2. A linear recirculating roller bearing assembly comprising a bearing body having a load bearing surface and a return surface defining a path for continuous recirculating movement of roller bearings thereabout, a plurality of substantially identical roller bearings disposed about said path in engagement with said surfaces, each of said roller bearings having a longitudinal axis and including at least two cylindrical load bearing portions and at least one cylindrical axle portion disposed intermediate said load bearing portions, said portions being substantially concentric with said axis and said axle portion having a smaller diameter than said load bearing portions, and a plurality of substantially identical retaining clips operatively interconnecting each of said axle portions of adjacent roller bearings to maintain the latter in predetermined spaced relationship and their axes substantially perpendicular to said path as said roller bearings travel thereabout, and wherein the number of said retaining clips operatively connected to any given one of said axle portions of any given one of said roller bearings is at least four and is divisible by the numeral 2, one-half of said number of said retaining clips being operatively connected to said axle portion of an immediately adjacent roller bearing to one side of said given one of said roller bearings and the other one-half of said number of said retaining clips being operatively connected to said axle portion of an immediately adjacent roller bearing to the other side of said given one of said roller bearings. 3. The invention as defined in claim 2 wherein said retaining clips each include a central body portion and spaced leg portions extending from opposite ends thereof and coacting therewith to define arcuate seats embracing said axle portions of adjacent roller bearings and openings communicating with said seats, each of said leg portions being yieldable relative to said central body portion to vary the size of said openings between a first size less than the diameter of said axle portions of said roller bearings and a second size at least equal to such diameter to permit assembly and disassembly of said retaining clips with respect to said roller bearings. 4. The invention as defined in claim 2 further comprising alignment means disposed at least at one end of said bearing body along said path for engagement with said roller bearings to align the longitudinal axes of the latter substantially perpendicular to the direction of travel of said roller bearings along said path. 5. The invention as defined in claim 4 wherein said alignment means comprises a sprocket including a plurality of circumferentially spaced arcuate pockets for seating said load bearing portions of said roller bearings, and means rotatably mounting said sprocket on said bearing body with the center of curvature of each of said arcuate pockets being disposed substantially perpendicular to the direction of travel of said roller bearings along said path. 6. The invention as defined in claim 5 wherein there is one of said sprockets disposed at each end of said bearing body along said path. 7. The invention as defined in claim 2 wherein said load bearing surface of said bearing body has opposite ends which are included at an angle to a plane containing said load bearing surface to define ramps, the height of at least a portion of said ramps relative to the plane of the surface to be engaged by said load bearing portions of said roller bearings being less than the diameter of the latter. 8. The invention as defined in claim 2 further comprising bearing means carried by said bearing body and coacting with said roller bearings to absorb side loads imposed on the latter while preventing imposition of such loads on said retaining clips. 9. The invention as defined in claim 8 wherein said bearing means comprises a pair of laterally spaced substantially parallel side walls on said bearing body straddling said load bearing surface, the clearance between the opposite ends of said roller bearings and said side walls being less than the clearance between the ends of said axle portions of said roller bearings and the stacked width of said retaining clips operatively secured thereto. 10. The invention as defined in claim 8 wherein said bearing means comprises a rail operatively secured longitudinally along the length of and projecting from said load bearing surface in opposed spaced relation to said axle portions of said roller bearings, the width of said rail being greater than the stacked width of said retaining clips opertively connected to said axle portions of said roller bearings. 11. A linear recirculating roller bearing assembly comprising a bearing body having a load bearing surface and a return surface disposed substantially parallel to each other and defining a path for continuous recirculating movement of roller bearings thereabout, a plurality of substantially identical roller bearings disposed about said path in engagement with said surfaces, each of said roller bearings having a longitudinal axis and including at least two substantially identical cylindrical load bearing portions and at least one cylindrical axle portion disposed intermediate said load bearing portions, said portions being substantially concentric with said axis and said axle portions having a smaller diameter than said load bearing portions, and a plurality of substantially identical retaining clips operatively interconnecting each of said axle portions of adjacent roller bearings to maintain the latter in predetermined spaced relationship and their axes substantially perpendicular to said path as said roller bearings travel thereabout, and wherein the number of said retaining clips operatively connected to any given one of said axle portions of any given one of said roller bearings is at least four and is divisible by the numeral 2, one-half of said number of said retaining clips being operatively connected to said axle portion of an immediately adjacent roller bearing to one side of said given one of said roller bearings and the other one-half of said number of said retaining clips being operatively connected to said axle portion of an immediately adjacent roller bearing to the other side of said given one of said roller bearings. 12. The invention as defined in claim 11 wherein said retaining clips each includes a central body portion and spaced leg portions extending from opposite ends thereof and coacting therewith to define arcuate seats embracing said axle portions of adjacent roller bearings and openings communicating with said seats, each of said leg portions being yieldable relative to said central body portion to vary the size of said openings between a first size less than the diameter of said axle portions of said roller bearings and a second size at least equal to such diameter to permit assembly and disassembly of said retaining clips with respect to said roller bearings. 13. The invention as defined in claim 12 further comprising alignment means disposed at least at one end of said bearing body along said path for engagement with said roller bearings to align the longitudinal axes of the latter substantially perpendicular to the direction of travel of said roller bearings along said path. 14. The invention as defined in claim 13 wherein said alignment means comprises a sprocket including a plurality of circumferentially spaced arcuate pockets for seating said load bearing portions of said roller bearings, and means rotatably mounting said sprocket on said bearing body with the center of curvature of each of said arcuate pockets being disposed substantially perpendicular to the direction of travel of said roller bearings along said path. 15. The invention as defined in claim 14 wherein the opposite ends of said load bearing surface of said bearing body are inclined at an angle to the plane containing said load bearing surface to define ramps, the height of at least a portion of said ramps relative to the plane of the surface to be engaged by said load bearing portions of said roller bearings being less than the diameter of the latter. 16. The invention as defined in claim 15 further comprising bearing means carried by said bearing body and coacting with said roller bearings to absorb side loads imposed on the longitudinal axes of the latter while preventing imposition of such loads on said retaining clips. 17. The invention as defined in claim 16 wherein said bearing means comprises a pair of laterally spaced substantially parallel side walls on said bearing body straddling said load bearing surface, the clearance between the opposite ends of said roller bearings and said side walls being less than the clearance between the ends of said axle portions of said roller bearings and the stacked width of said retaining clips operatively secured thereto. 18. The invention as defined in claim 16 wherein said bearing means comprises a rail operatively secured longitudinally along the length of and projecting from said load bearing surface in opposed spaced relation to said axle portions of said roller bearings, the width of said rail being greater than the stacked width of said retaining clips operatively connected to said axle portions of said roller bearings.

이 특허를 인용한 특허 피인용횟수: 8

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Linear recirculating roller bearing assembly

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Linear recirculating roller bearing assembly

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이 특허를 인용한 특허 피인용횟수: 8

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