Rotary compressor having a stepped cover of a discharge...

Details Rotary compressor having a stepped cover of a discharge... Rotary compressor having a stepped cover of a discharge...

2008-06-03

2008-06-03

Trieu, Theresa (Department: 3748)

Rotary expansible chamber devices

Working member has planetary or planetating movement

Plural working members or chambers

C418S011000, C418S149000, C418S181000

Reexamination Certificate

active

07381039

ABSTRACT:
A rotary compressor including upper and lower cylinders constituting first and second rotary compression elements; a lower support member which closes an opening of the lower cylinder and which has a bearing as a bearing portion of a rotation shaft; a discharge muffler chamber formed by depressing an outer surface of the bearing of the lower support member on the side opposite to the lower cylinder to close the depressed portion with a lower cover; an O-ring groove formed in the surface of the bearing which abuts on the lower cover; an O-ring stored in the O-ring groove; and a gasket disposed between the lower support member. The lower cover in an outer peripheral portion of the lower support member, and the surface of the lower cover on the side of the lower support member, is provided with a stepped portion to absorb a thickness of the gasket.

REFERENCES:
patent: 1970033 (1934-08-01), Dennedy
patent: 2124239 (1938-07-01), Smith
patent: 2174536 (1939-10-01), Smith
patent: 6732542 (2004-05-01), Yamasaki et al.
patent: 2005/0169787 (2005-08-01), Iguchi et al.
patent: 2005/0191198 (2005-09-01), Sato
patent: 02267390 (1990-11-01), None
patent: 2003-97473 (2003-04-01), None
patent: 2003097479 (2003-04-01), None
patent: 2005240743 (2005-09-01), None

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