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특허 상세정보

Hydraulic system with a dynamic seal

국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) F15B-013/04    F15B-019/00    F16K-037/00    F15B-020/00    F16K-031/12    F15B-013/043   
출원번호 US-0947303 (2013-07-22)
등록번호 US-9651067 (2017-05-16)
발명자 / 주소
출원인 / 주소
대리인 / 주소
    Spillman, M. Daniel
인용정보 피인용 횟수 : 0  인용 특허 : 14
초록

A system can include one or more valve arrangements with a working chamber to receive a working fluid at a first pressure, and a control chamber to receive fluid at a second pressure. A dynamic seal can be disposed on a land of a valve element. The valve arrangement may include a sleeve against which the dynamic seal is slidably engaged. The valve element may include a check stem. A pressure compensating system may be in communication with bores formed in with the valve element. A pressure system to monitor dynamic seal wear may be in communication with ...

대표
청구항

1. A system, comprising: a first valve device and a second valve device, each of the first valve device and the second valve device including: a valve body and a valve element slidably disposed within a passageway formed in the valve body, wherein a first segment of the valve element and the valve body are arranged to define a working chamber to receive fluid at a first pressure, and the valve body and the valve element are arranged to define a control chamber to receive fluid at a second pressure, the valve element having a first land and a second land ...

이 특허에 인용된 특허 (14)

  1. Oksanen Kari J. (Vancouver CAX) LaBar Grant V. (Surrey CAX). Automatic control valve. USP1994095348036.
  2. Spencer Larry K. (Carrollton TX). Convertible high or low pressure pilot valve. USP1987024643228.
  3. Osada, Michio; Takehara, Masataka; Matsuo, Makoto. Cutting apparatus and cutting method. USP2004056736703.
  4. Hutchison Eric A. (Peoria IL) Krone John J. (Dunlap IL). Displacement controlled hydraulic proportional valve. USP1994095350152.
  5. Lunzman Stephen V. (Chillicothe IL). Displacement controlled hydraulic proportional valve. USP1994115366202.
  6. Cameron Russell J. (Rochester MI). Double safety valve for stamping presses and the like. USP1981034257455.
  7. Yoshida Kunihiko (Ibaraki JPX) Koshi Kenichi (Tsuchiura JPX) Ichiki Nobuhiko (Ibaraki JPX). Fluid control valve apparatus. USP1987114706932.
  8. Ma, Pengfel; Vande Kerckhove, Philippe Georges. Force feedback poppet valve having an integrated pressure compensator. USP2009117621211.
  9. Malina Viktor (Kisslegg DEX). Hydro-pneumatic pressure transformer. USP1995015377488.
  10. Hartfiel Johannes (Neueichwaldstrasse 5 6800 Mannheim 31 DEX) Schmitt Manfred (Johann-Casimier-Str. 17 6701 Friedelsheim DEX). Method of and apparatus for control of saftey valves. USP1990034911192.
  11. La Coste Bernard L. (Wilmington DE). Method of diagnostic valve testing. USP1981064274438.
  12. Peters Clifford M. (Longview TX). Pilot valve mechanism for high or low pressure cut-off control. USP1980084217934.
  13. Kepler James L. (York PA). Spherical valve seal piston detecting and locking arrangement. USP1980034194528.
  14. Hartmann Willi (Riedstadt DEX). Valve adjustment arrangement and process for a tandem piston master cylinder. USP1992115161376.