Title:
SLIDING PART
Document Type and Number:
WIPO Patent Application WO/2014/050920
Kind Code:
A1
Abstract:
Provided is a sliding part providing functionality for both leak prevention and lubrication with no relation to the magnitude of the pressure difference between the inner and outer circumference of a sliding face by drawing in a fluid with a cavitation region on the upstream side of a depressed portion, such as a dimple formed on the sliding face, and generating positive pressure between the sliding faces on the downstream side of the dimple.
A sliding part is characterized in that: dimples are provided on the sliding face on one of a pair of sliding parts that slide relative to each other; a cavitation forming region on the upstream side of each dimple is disposed near a low pressure fluid side and a positive pressure generating region on the downstream side is disposed near a high pressure fluid side; and the fluid drawn in with the cavitation forming region of the dimple is returned to the high pressure fluid side from the positive pressure generating region by passing through the inside of the dimple.
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Inventors:
TOKUNAGA YUICHIRO (JP)
Application Number:
PCT/JP2013/075969
Publication Date:
April 03, 2014
Filing Date:
September 26, 2013
Export Citation:
Assignee:
EAGLE IND CO LTD (JP)
International Classes:
F16J15/34
Foreign References:
| JPH09273636A | 1997-10-21 | |||
| JP2010133496A | 2010-06-17 | |||
| JPH0590049U | 1993-12-07 | |||
| FR1366960A | 1964-07-17 | |||
| JPH08277941A | 1996-10-22 | |||
| JP2005180652A | 2005-07-07 | |||
| JP2011185292A | 2011-09-22 |
Other References:
HAMILTON; WALOWIT; ALLEN, A.S.M.E. PAPER NO. 65-LUB-11, 1965
Attorney, Agent or Firm:
SHIGENOBU Kazuo et al. (JP)
Shigenobu Kazuo (JP)
Shigenobu Kazuo (JP)
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