[특허]Two-piece seal

Two-piece seal 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	F16J-015/32
출원번호	US-0638522 (1975-12-08)
발명자 / 주소	Domkowski Ronald A. (Arlington Heights IL)
출원인 / 주소	Halogen Insulator & Seal Corporation (Elk Grove IL 02)
인용정보	피인용 횟수 : 46 인용 특허 : 0

초록 ▼

An annular composite two-piece seal is described for sealing engagement with a reciprocating member. The composite seal includes a soft, flexible, annular sealing ring having an annular sealing lip with a chamfered portion facing the high pressure side of the seal and inclined toward the reciprocating member, and having an axially and circumferentially extending wall for sealing engagement with an axially directed circumferential wall of a groove in a stationary member receiving the seal. A second annular sealing ring of harder and lower friction material is formed with a circumferentially extending sealing lip for engaging the reciprocating member. Both of these sealing lips seal with the reciprocating member at a low pressure loading of the seal. The sealing lip on the second ring is deflected into tighter sealing engagement with the reciprocating member with increased pressure on the first ring. Mating interlocking portions on these rings prevent substantial displacement therebetween and thus reduce the likelihood of bypass leakage between the rings.

대표청구항 ▼

A composite seal for sealing engagement with a radially extending end wall and an axially extending wall defining an annular cavity in a stationary member and for sealing with a moving member, said seal comprising: a first soft flexible annular sealing ring made of elastomeric material having an annular sealing lip edge for sealing engagement with the moving member at first predetermined pressures, said sealing lip having a chamfered edge inclined to be pressed by higher pressure forces to have greater contact area; a second lip on said first sealing ring being inclined radially away from said first lip said second lip being spaced from said first lip and defining an annularly extending groove therebetween; an axially extending wall on said first sealing ring extending from said second lip and coacting with said second lip for sealing engagement with the axially extending wall defining the annular cavity; a second annular sealing ring of material harder than the material of said first sealing ring and having a friction characteristic lower than that of said elastomeric material, said second sealing ring having a radially directed extending sealing lip and having an edge for engaging said moving member at a position spaced axially downward from said annular sealing lip on said first ring, each of said sealing edges on said first and second seals having a diameter for sealing in interference with said moving member at a low pressure loading of said seal, said first and second sealing rings having surfaces abutting one another to deflect the sealing lip on said second ring to deform into greater contact area with said moving member with increased pressure on said first sealing ring, a radially extending end wall on said flexible sealing ring disposed behind a portion of said second sealing ring for sealing engagement with the radially extending end wall on said stationary member, said axially extending wall on said first sealing ring extending from said second lip to said end wall, and interlocking means on said first and second sealing rings mated with One another to prevent substantial relative displacement bodily of said first sealing ring relative to said second sealing ring and thereby reducing a likelihood of bypass leakage between said first and second sealing rings.

이 특허를 인용한 특허 (46)

Wilkins, John Arthur; Yu, Austin, Axle seal.
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Hatch,Frederick Ronald, Bonded PTFE radial shaft seal.
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Holt,Augustus Brooks; Roberts,Paul E.; Schofield,Alan P., Cammed seal assembly with sealing ring having an angled leg portion and foot portion with elastomeric energizer element.
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Valls Jose E. (Ponce PR), Composite gasket and fitting including same.
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Valls Jose E. (Ponce PR), Composite gasket and fitting including same.
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Cipolla,Giovanni; Bonomi,Sandro, Composite toroidal gasket ring for ball valves.
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Bogdanovic Bogdan (Krugersdorp ZAX), Contact seal.
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Grosspietsch, Wolfgang; Gebauer, Dieter; Tulaczko, Boleslaw; Stampf, Volker; Gemeinhardt, Andre; Krappmann, Klaus, Cylinder for a hydraulic system.
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Thompson Robert H. (Dearborn Heights MI) Szlaga Emil (Connersville IN) Harris Robert S. (Connersville IN), Filler neck sealing assembly.
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Nishii Michiharu (Toyota JPX) Sugiura Yuzuru (Anjo JPX), Fluid pressure servomotor.
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Hennells Ransom J. (Plymouth MI), Gas spring.
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Newman David W. (Lebanon OH) Lin George Y. (Kettering OH), Gasket for sanitary pipe fittings.
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Pasino, Robert, Guiding and sealing unit for a rod of a mono-tube shock absorber and annular sealing assembly therefore.
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Blume, George H., High pressure pump piston.
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Blume, George H., High pressure pump piston.
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Blume,George H., High pressure pump piston.
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Sugiyama Masahiro (Hiratsuka JPX), Oil seal assembly with unbonded backup ring.
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Jones, Michael E.; Waterstredt, Jeffrey J., One-way pressure activated piston seal.
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Jones, Michael E.; Waterstredt, Jeffrey J., One-way pressure activated piston seal.
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Wheeler John H. (Dallas TX), Packing member.
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Weaver Joe T. (Midland TX), Piston construction for reciprocating pumps.
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Tregonning, Geoffrey R., Piston sealing arrangement.
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Krappmann, Klaus; Gemeinhardt, Andre; Sui, Hai; Gebauer, Dieter; Tulaczko, Boleslaw; Stampf, Volker, Primary seals for master-slave cylinder systems.
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Ulrich Donald Charles, Radial lip shaft seal.
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Nagasawa Shinji (Fukushima JPX), Radial oil seal.
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Hatch, Frederick R., Radial shaft seal assembly with snap in auxiliary member.
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Balsells Peter J., Rotary cartridge seals with retainer.
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Balsells Peter J. ; Schroeder John, Rotary cartridge seals with retainer.
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Hess, Tobias; Stein, Thomas; Buervenich, Stefan, Seal and cross member unit for universal joints.
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Traub Henry A. (Pacific Palisades CA), Seal assembly.
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Walden, Elond W., Seal assembly for telescopic hydraulic cylinder.
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Traub Henry A. (Pacific Palisades CA), Seal assembly with reduced wear low pressure sealing ring.
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Wheeler John H. (Dallas TX), Seal for elevator drive mechanism.
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Dahll Hans H. (Williams Bay WI), Seal incorporating a resilient sealing element.
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Hunger, Ingrid, Seal set and sealing arrangement comprising at least one seal set.
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Pecak, Robert D., Seal with pressure-actuatable sealing bead.
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Mller Heinz K. (Waiblingen DEX), Sealing arrangement.
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Bernhardt Bruno (Reutlingen DEX) Kedzierski Heinrich (Wennigsen DEX), Sealing device.
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Reineke Frank,DEX, Sealing device for an annular gap between two sealing surfaces of machine parts.
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Couvillion Paul L. (Houston TX) Ray James E. (Houston TX), Sealing member with anti-extrusion means and protective coating.
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Becker Bernd (Leimen DEX) Forch Hans (Birkenau DEX) Helfrich Adam (Wald-Michelbach DEX) Jung Gottfried (Furth DEX), Sealing ring.
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Uesugi, Yasuji; Hosokawa, Atsushi, Sealing structure.
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Cather ; Jr. Douglas A. (Gastonia NC), Shaft seal and method.
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Madigan,Christopher, Shaft seal having independent sealing lips.
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Vassmer Gregory R. (Garden Prairie IL), Unitary seal for gas pressure spring assembly.
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Hashimoto Akihiko (Hachioji JPX), Water tight seal structure for camera.
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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

내보내기 구분	파일저장 인쇄 메일전송
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연합인증

Two-piece seal 원문보기

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이 특허를 인용한 특허 (46)

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Two-piece seal 원문보기

초록 ▼

대표청구항 ▼

연구과제 타임라인

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이 특허를 인용한 특허 (46)

관련 콘텐츠

특허 원문 보기

IPC 상위 출원인

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