[특허]High pressure wear resistant pilot valve

[미국특허] High pressure wear resistant pilot valve 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	F15B-013/042
출원번호	US-0739887 (1996-10-31)
발명자 / 주소	Watson Richard R.
출원인 / 주소	Gilmore Valve Company
대리인 / 주소	Bush, Riddle and Jackson
인용정보	피인용 횟수 : 16 인용 특허 : 6

초록 ▼

A reciprocating sleeve type valve mechanism having a valve housing within which is located a cage element. A piston, movably positioned within the valve housing, accomplishes linear opening movement of a cylindrical seal sleeve with respect to spaced polymer seals within the housing. Closing movement of the seal sleeve is accomplished by a return spring. Sealing between the cage element and a wear resistant external ceramic liner of the seal sleeve is accomplished by a seal assembly having a centrally located elastomer seal ring with polymer backup wiper rings positioned on opposite sides thereof. The seal assembly provides a bearing and guiding function to stabilize the seal sleeve during its opening and closing movement and to wipe particulate from the sealing surface of the seal sleeve as well as to maintain efficient sealing with the seal sleeve as the valve is opened and closed.

대표청구항 ▼

[ What is claimed is:] [1.] A two position, three-way pilot valve comprising:(a) a valve body defining a valve chamber and a piston chamber therein, said valve body having a supply opening, a vent opening and a function opening and defining a pilot pressure circuit in communication with said piston chamber;(b) a piston being movably disposed within said piston chamber and having a piston stem movably disposed within said piston chamber and having a piston stem movably disposed within said valve chamber;(c) first and second seal elements being located in spaced relation within said valve chamber;(d) a seal sleeve having an axial length less than the spacing of said first and second seal elements and being mounted to said piston stem, said seal sleeve defining an external cylindrical sealing surface and having axial sealing ends disposed for respective sealing engagement with said first and second seal elements depending upon the position of said seal sleeve within said valve chamber, said seal sleeve defining at least one flow passage for communicating supply pressure from said supply opening through said seal sleeve to said function opening when said seal sleeve is in spaced relation with said first seal element;(e) a cage member being located in sealed relation within said valve chamber and maintaining said first and second seal elements in said spaced relation;(f) means sealing said cage member with respect to said external cylindrical sealing surface of said cage member; and(g) a wear resistant material being provided on said seal sleeve and defining at least a portion of said external cylindrical sealing surface, said sealing means having sealing engagement with said wear resistant material.

이 특허에 인용된 특허 (6) 인용/피인용 타임라인 분석

Litherland ; James Albert Frazier, Packing assemblies.
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Tomlin Jerry B. (Sugar Land TX) Olejak Ingo W. V. (Houston TX), Pilot actuated spool valve.
상세보기
Tomlin Jerry B. (Sugar Land TX), Springless pilot operated sequence valve.
상세보기
Gilmore Samuel E. (5119 Pine St. Bellaire TX 77401), Subsea fluid conduit connections for remote controlled valves.
상세보기
Kowalski Slawomir (Rockaway NJ), Three port non-interflow poppet valve.
상세보기
LeMoine Joseph L. (Houston TX), Underwater connector for fluid lines.
상세보기

이 특허를 인용한 특허 (16) 인용/피인용 타임라인 분석

Neugebauer, Thomas W., Dual energized hydroseal.
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Neugebauer,Thomas W.; Thrash, Jr.,Thomas B., Dual energized hydroseal.
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Watson,Richard R.; Weintraub,Preston N., Equalizer valve and associated method for sealing a fluid flow.
상세보기
Fishwick, James, Fluid flow control device.
상세보기
Kittock, Mark J.; Qureshi, Humayun, Fluid-moving device with integrated valve.
상세보기
Patterson, Andy, High performance subsea pressure regulator.
상세보기
Smith, III, Robert E.; Hollister, Frank Harold; Watson, Richard R.; Tipton, Dane, Metal reinforced seal plate for pilot actuated spool valve.
상세보기
Smith, III, Robert E.; Hollister, Frank Harold; Watson, Richard R.; Tipton, Dane, Metal reinforced seal plate for pilot actuated spool valve.
상세보기
Fishwick, James; Jacobson, Gary T., Pilot-operated quick exhaust valve.
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Bell, Brandon Wayne, Seal assemblies for use with fluid valves.
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Gustafson, Ryan; Goode, Matthew; Bailey, Parker, Stabilized valve.
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Gustafson, Ryan Cheaney, Subsea operating valve connectable to low pressure recipient.
상세보기
Tougasaki, Mitsuhisa; Nishimura, Yoshizumi; Nozawa, Yusaku; Takahashi, Kinya, Unloading valve.
상세보기
Faas, Wayne R.; Grabau, Ted D.; Barron, Kimball R., Valve plug seal assembly.
상세보기
Walker, Richard Ian, Valve with a valve stem wiper.
상세보기
Woessner, George T.; Abel, Stephen G.; Baker, Mark H.; Alexander, Dennis M., Vehicle, lightweight pneumatic pilot valve and related systems therefor.
상세보기

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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

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[미국특허] High pressure wear resistant pilot valve 원문보기