Fluid coupling

Details Fluid coupling Fluid coupling

2011-04-12

2011-04-12

Lee, Kevin L (Department: 3753)

Fluid handling

Systems

Flow path with serial valves and/or closures

C137S614030

Reexamination Certificate

active

07921875

ABSTRACT:
In the fluid coupling for connecting the fluid passages of a plug (1) and a socket (2), a valve (33), a valve holder (31) and a spring (32) disposed in a compressed state between the valve (33) and the valve holder (31) are accommodated inside each of the plug (1) and the socket (2) to be connected to each other the plug (1) is inserted into the socket (2), the valve (33) of the plug (1) and the valve (33) of the socket (2) make contact with each other so that the valves (33) are retracted resisting an urging force of the spring (32). This fluid coupling further includes conical members (32, 51) which form a conical external shape along a line connecting the outside diameter portion of the valve (33) and the outside diameter portion of the valve holder (31) when the valve (33) of the plug (1) and the valve (33) of the socket (2) make contact with each other, so that the springs (32) are compressed between the valve (33) and the valve holder (31).

REFERENCES:
patent: 4200121 (1980-04-01), Walter et al.
patent: 4827977 (1989-05-01), Fink, Jr.
patent: 5401000 (1995-03-01), Tsay
patent: 7028983 (2006-04-01), Ozaki et al.
patent: 2578650 (2003-10-01), None
patent: 25 20 393 (1976-11-01), None
patent: 2 384 196 (1978-10-01), None
patent: 2001-124227 (2001-05-01), None
patent: 2002-295770 (2002-10-01), None
patent: 2005-147169 (2005-06-01), None
Chinese Office Action issued Oct. 23, 2009 in corresponding Chinese Patent Application No. 200810168790.9.
European Search Report (in English language) issued Jan. 16, 2009 in European Patent Application No. 08165221.6.

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