Permanently lubricated film gasket and method of manufacture
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
F16J-015/02
F16L-025/00
F16L-017/025
F16L-021/035
출원번호
US-0454135
(2014-08-07)
등록번호
US-9746112
(2017-08-29)
발명자
/ 주소
Knapp, Mark
출원인 / 주소
Springseal, Inc.
대리인 / 주소
Tarolli, Sundheim, Covell & Tummino LLP
인용정보
피인용 횟수 :
0인용 특허 :
83
초록▼
A permanently lubricated film gasket for providing a fluid-tight seal between a corrugated pipe and a smooth annular section of an outer pipe or section when the corrugated pipe and the outer pipe or section are in a relative surrounded and surrounding relationship. A first portion of the gasket is
A permanently lubricated film gasket for providing a fluid-tight seal between a corrugated pipe and a smooth annular section of an outer pipe or section when the corrugated pipe and the outer pipe or section are in a relative surrounded and surrounding relationship. A first portion of the gasket is shaped to fit within a groove or recess of the corrugated pipe. A second portion of the gasket extends from the first portion. The second portion is at least partially comprised of permanently lubricated film for facilitating in the connection of the pipes along a single direction.
대표청구항▼
1. An annular gasket for providing a fluid-tight seal between a pair of tubular members comprising: a) a support section shaped to fit within a recess of one of a pair of tubular members, the support section having a first durometer;b) a sealing section extending from said support section and being
1. An annular gasket for providing a fluid-tight seal between a pair of tubular members comprising: a) a support section shaped to fit within a recess of one of a pair of tubular members, the support section having a first durometer;b) a sealing section extending from said support section and being configured to make a sealing contact with other of said pair of tubular members, the sealing section having a second durometer, said sealing section further comprising: i) a central tip portion at a first end of said sealing section, the central tip being located about an apex of the sealing section, the apex separating a leading side from a trailing side of the sealing section;ii) a first leg portion located at a second end of said sealing section on the leading side of said apex and a second leg portion located on said second end of said sealing section at the trailing side of said apex;iii) a first edge portion located on the leading side of said apex;iv) a second edge portion located on the trailing side of said apex; andv) a permanently lubricating film being spaced from said apex and extending along said first edge portion on the leading side, the permanently lubricating film providing the leading side with a lower coefficient of friction than the trailing side;c) wherein said permanently lubricated film is embedded within said sealing section. 2. The annular gasket of claim 1, wherein said permanently lubricating film extends from said first leg portion to a location spaced from said central tip portion on said leading side. 3. The annular gasket of claim 1, wherein said permanently lubricated film is a polyethylene film. 4. The annular gasket of claim 1, wherein said permanently lubricated film is a polypropylene film. 5. The annular gasket of claim 1, wherein said support and sealing sections are a single extrudate having a single durometer. 6. The annular gasket of claim 1, wherein said support and sealing sections are separate extrudates having differing durometers. 7. The annular gasket of claim 6, wherein said second durometer material is relatively lower than said first durometer material. 8. The annular gasket of claim 1, wherein said first durometer material is a Shore A durometer ranging between 60-80 durometer and said second durometer material is a Shore A durometer ranging between 40-50 durometer. 9. The annular gasket of claim 1, wherein said permanently lubricating film has a thickness ranging between 0.003″ to 0.005″. 10. The annular gasket of claim 1, wherein said leading side spans from a first end of the first leg portion to said apex wherein said permanently lubricating film extends from said first end of said first leg portion to a location spaced from said apex on said leading side. 11. The annular gasket of claim 1, wherein said permanently lubricating film is solid. 12. A permanently lubricated film gasket for sealing adjoining pipe sections comprising: a) a support polymeric section having a first durometer circumscribing a first region of a permanently lubricated film gasket;b) a sealing polymeric section having a second durometer circumscribing a second region of said permanently lubricated film gasket, the sealing polymeric section having a central tip portion disposed about an apex of the sealing polymeric section, a leading side being disposed on one side of the apex and a trailing side being disposed on an opposing second side of the apex; andc) a permanently lubricated film being spaced from said apex and having a low coefficient of friction embedded along the leading side of said sealing polymeric section, the permanently lubricating film providing the leading side with a lower coefficient of friction than the trailing side;d) wherein said support polymeric section, sealing polymeric section and permanently lubricated film are produced through a single die head to form a single extrusion. 13. The permanently lubricated film gasket of claim 12, wherein said polymeric sections are a thermoplastic. 14. The permanently lubricated film gasket of claim 12, wherein said polymeric sections are an elastomer. 15. The permanently lubricated film gasket of claim 12, wherein a select portion of said sealing polymeric section is along a leading edge of said gasket that contacts one of a pair of adjoining pipe sections to form a sealing engagement. 16. The permanently lubricated film gasket of claim 12, wherein said low coefficient of friction is a static friction value less than 0.5. 17. The permanently lubricated film gasket of claim 12, wherein said low coefficient of friction film remains in a controlled location on said gasket. 18. The permanently lubricated film gasket of claim 12, wherein said leading side spans from a first end of the first leg portion to said apex wherein said permanently lubricating film extends from said first end of said first leg portion to a location spaced from said apex on said leading side. 19. The annular gasket of claim 12, wherein said permanently lubricating film is solid. 20. An annular gasket for providing a fluid-tight seal between a pair of tubular members comprising: a) a support portion made from a first material having a first durometer, the support portion being shaped to fit within a recess of one of a pair of tubular members; andb) a sealing portion made from a second material having a second durometer relatively lower than said first durometer, the sealing portion extending from said support section and being configured to make a sealing contact with the other of said pair of tubular members, said sealing portion further comprising: i) a central tip portion at a first end of said sealing portion;ii) a first leg portion located at a second end of said sealing portion on a first side of said central tip portion and a second leg portion located on said second end of said second portion on a second side of said central tip portion;iii) an edge portion located on the first side of said central tip portion; andiv) a solid permanently lubricating film being spaced from said apex and extending along said edge portion that is extruded into said sealing portion, the permanently lubricating film providing the leading side with a lower coefficient of friction than the trailing side. 21. The annular gasket of claim 20, wherein said permanently lubricating film has a thickness ranging between 0.003″ to 0.005″. 22. The annular gasket of claim 20, wherein the central tip being located about an apex of the sealing section, the apex separating a leading side from a trailing side of the sealing section, the permanently lubricating film providing the leading side with a lower coefficient of friction than the trailing side. 23. The annular gasket of claim 20, wherein said leading side spans from a first end of the first leg portion to said apex wherein said permanently lubricating film extends from said first end of said first leg portion and is spaced from said apex on said leading side.
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