[특허]Seal ring for valve stem

Seal ring for valve stem 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	F16J-015/32
출원번호	US-0316652 (1994-09-30)
발명자 / 주소	Albertson Kenneth R. (West Valley City UT) Bolinder Vernon R. (West Jordan UT)
출원인 / 주소	Parker-Hannifin Corporation (Cleveland OH 02)
인용정보	피인용 횟수 : 29 인용 특허 : 0

초록 ▼

A seal assembly for a valve stem has a primary seal ring with a relatively rigid gland member having an annular base of generally rectangular cross-section and a pair of flexible sealing lips formed in one piece with the base and extending outwardly from one side thereof. The sealing lips define a cavity for an elastomeric expander ring. The expander ring is disposed within the cavity and retained therein by the sealing lips. Each sealing lip has a sealing edge on the outer surface thereof which is pre-loaded against the valve stem and the valve housing when the primary seal ring is installed around the valve stem. Each sealing lip has a flared angle which narrows down to a thickness of between 0.033 and 0.041 inches along the length of the sealing lip between the base and the sealing edge. The expander ring also has a maximum cross-sectional dimension at substantially the midpoint of the expander ring in a direction normal to the central axis of the seal ring which is between 74% and 96% of the nominal cross-section between the valve stem and the valve housing, and each of the sealing lips has a maximum radial dimension about a plane through the midpoint and normal to the central axis which is between 2% and 13% of the nominal cross-section between the valve stem and the valve housing. The primary sealing ring with these dimensions provides enhanced sealability, reliability and dependability.

대표청구항 ▼

A sealing ring for installation between two members spaced apart a predetermined distance, said sealing ring comprising: i) a relatively rigid annular base of generally rectangular cross-section and a pair of relatively flexible sealing lips formed in one piece with said base and extending outwardly from one side of said base, said sealing lips defining a cavity for an expander ring and each lip has a sealing edge on an outer surface thereof for sealing contact with one of said members, and ii) a resilient expander ring disposed in the cavity between the sealing lips, said sealing lips at least partially surrounding and retaining said expander ring within the cavity, each of said sealing lips narrowing down between said base and said sealing edge to a cross-sectional dimension which is between 0.033 inches and 0.041 inches at the narrowest point along the lip, and said expander ring having a maximum cross-sectional dimension substantially at the midpoint of the expander ring which is between 74% and 96% of said predetermined distance, and each of said sealing lips having a maximum dimension about a plane through said midpoint and normal to said direction which is between 2% and 13% of said predetermined distance.

이 특허를 인용한 특허 (29)

Stephens, Jeffrey D., Back-up rings for high pressure seals, packing assembly, and pumps incorporating same.
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Cipolla,Giovanni; Bonomi,Sandro, Composite toroidal gasket ring for ball valves.
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Chacko, Shajan V.; Wands, David C., High pressure sealing arrangement.
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Chacko, Shajan V.; Wands, David C., High pressure sealing arrangement.
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Nimberger Spencer M. (Houston TX) Ward Robert L. (Missouri City TX), Piston sealing arrangement for a sampling pump system.
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Chacko, Shajan V., Seal ring.
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Cobb, Larry, Seal ring having secondary sealing lips.
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Albertson Kenneth R., Sealing system for a reciprocating shaft.
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Ferrarese, André; Bruno, Rafael A.; Huegel, Rudolf, Single-piece oil control ring.
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McGinley, Kimball B.; Kahle, Henry; Taylor, Scott V.; Johnson, Gary M., Surgical access port.
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McGinley, Kimball B.; Kahle, Henry; Taylor, Scott V.; Johnson, Gary M., Surgical access port.
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McGinley, Kimball B; Kahle, Henry; Taylor, Scott V.; Johnson, Gary M, Surgical access port.
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Hawkins, Phillip J.; Hodgson, Judith E., Thermal retracting actuator.
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Hawkins, Phillip J.; Hodgson, Judith E.; Conrad, John W.; Petrosky, Lyman J., Thermal retracting actuator.
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Butcher, Tigree Milam; Griswold, Milton Loman, Two-piece valve stem seal.
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Kirchner Karry S. ; Griswold Milton L., Two-piece valve stem seal.
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Pawl, Rory S.; Scheib, Patrick L.; London, John A., Two-piece valve stem seal.
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Smith, Michael A., Unitized bi-directional seal assembly.
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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
구성항목	기본정보 상세정보 관리번호, 국가코드, 자료구분, 상태, 출원번호, 출원일자, 공개번호, 공개일자, 등록번호, 등록일자, 발명명칭(한글), 발명명칭(영문), 출원인(한글), 출원인(영문), 출원인코드, 대표IPC 관리번호, 국가코드, 자료구분, 상태, 출원번호, 출원일자, 공개번호, 공개일자, 공고번호, 공고일자, 등록번호, 등록일자, 발명명칭(한글), 발명명칭(영문), 출원인(한글), 출원인(영문), 출원인코드, 대표출원인, 출원인국적, 출원인주소, 발명자, 발명자E, 발명자코드, 발명자주소, 발명자 우편번호, 발명자국적, 대표IPC, IPC코드, 요약, 미국특허분류, 대리인주소, 대리인코드, 대리인(한글), 대리인(영문), 국제공개일자, 국제공개번호, 국제출원일자, 국제출원번호, 우선권, 우선권주장일, 우선권국가, 우선권출원번호, 원출원일자, 원출원번호, 지정국, Citing Patents, Cited Patents
저장형식	Text(ASCII format) Excel format PIAS분석(.xls)
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Seal ring for valve stem 원문보기

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Seal ring for valve stem 원문보기

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이 특허를 인용한 특허 (29)

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