Title:
VALVE DEVICE
Document Type and Number:
WIPO Patent Application WO/2005/095834
Kind Code:
A1
Abstract:
A valve device, comprising a valve housing body having a flow passage for a fluid, a valve guide formed in the valve housing body, a valve stem opening and closing the valve by sliding in the valve guide, a hydraulic actuator opening and closing the valve, and a hydraulic control valve controlling the hydraulic actuator. A scraper scraping off deposit adhered to the valve stem is fitted to the flow passage side end part of the valve guide. Also, the hydraulic actuator and the hydraulic control valve are formed integrally with each other in the valve housing body. In addition, the valve device comprises a nozzle with a restricting part for jetting pressurized oil for cooling toward the valve guide.
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Inventors:
SEIYAMA HIDEYUKI (JP)
OKUBO TAISEI (JP)
OKAYA KOUICHI (JP)
IWAZAKI TATSUYA (JP)
TSUDA HIROSHI (JP)
OKUBO TAISEI (JP)
OKAYA KOUICHI (JP)
IWAZAKI TATSUYA (JP)
TSUDA HIROSHI (JP)
Application Number:
PCT/JP2005/006498
Publication Date:
October 13, 2005
Filing Date:
April 01, 2005
Export Citation:
Assignee:
KOMATSU MFG CO LTD (JP)
SEIYAMA HIDEYUKI (JP)
OKUBO TAISEI (JP)
OKAYA KOUICHI (JP)
IWAZAKI TATSUYA (JP)
TSUDA HIROSHI (JP)
SEIYAMA HIDEYUKI (JP)
OKUBO TAISEI (JP)
OKAYA KOUICHI (JP)
IWAZAKI TATSUYA (JP)
TSUDA HIROSHI (JP)
International Classes:
F01L3/08; F01L3/24; F01L9/10; F02M25/07; F16K1/32; F16K29/00; F16K49/00; F16K51/00; F01L9/16; F01L9/20; F01L9/22; (IPC1-7): F16K51/00; F02M25/07; F16K1/32; F16K49/00
Domestic Patent References:
| WO1999054650A1 | 1999-10-28 |
Foreign References:
| JPS57200767U | 1982-12-21 | |||
| JPH06212922A | 1994-08-02 | |||
| JPS57101343U | 1982-06-22 | |||
| JPH11336616A | 1999-12-07 | |||
| JPS58144655A | 1983-08-29 | |||
| JPH07332169A | 1995-12-22 |
Attorney, Agent or Firm:
Kinoshita, Jitsuzo (Ogikubo TM building 26-13, Ogikubo 5-chom, Suginami-ku Tokyo 51, JP)
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