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Patent Searching and Data


Title:
PRESSURE REDUCING VALVE APPARATUS
Document Type and Number:
WIPO Patent Application WO/2011/058706
Kind Code:
A1
Abstract:
Disclosed is a pressure reducing valve apparatus (10) that is provided with a valve seat (22), a valve body (24), a valve rod (26), a compression spring (30), and the like, within a valve casing (12), and that releases the gas in a primary space (14) into a secondary space (16) when the differential pressure, which is the difference between the internal pressure of the secondary space (16) and the internal pressure of the primary space (14), increases to at least a prescribed level. The valve body (24) is disposed in a manner capable of opening and closing the open end of the valve seat (22), thereby cutting off or connecting the primary space (14) and the secondary space (16). The compression spring (30) is formed in a manner such that neighboring wound sections (36) do not mutually touch, has a shot peened surface, and impels the valve body (24) in the direction cutting off the primary space (14) and the secondary space (16).

Inventors:
NAKAGOME MASASHI (JP)
Application Number:
PCT/JP2010/006283
Publication Date:
May 19, 2011
Filing Date:
October 22, 2010
Export Citation:
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Assignee:
NHK SPRING CO LTD (JP)
NAKAGOME MASASHI (JP)
International Classes:
F16K17/04; F16F1/06
Domestic Patent References:
WO2004085685A12004-10-07
WO2006022009A12006-03-02
Foreign References:
JP2008020061A2008-01-31
JPH09144918A1997-06-03
JPH10251748A1998-09-22
JPH11241143A1999-09-07
JP2007127227A2007-05-24
JPS5867847A1983-04-22
JPH05320948A1993-12-07
JPH02133578A1990-05-22
JPH06137353A1994-05-17
JPS57186757U1982-11-26
JP4503555A
JPS61114177U1986-07-18
Attorney, Agent or Firm:
KIKUCHI, Osamu et al. (JP)
Osamu Kikuchi (JP)
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