Rotary expansible chamber devices – Working member has planetary or planetating movement – Helical working member – e.g. – scroll
Reexamination Certificate
2008-01-21
2009-08-04
Denion, Thomas E (Department: 3748)
Rotary expansible chamber devices
Working member has planetary or planetating movement
Helical working member, e.g., scroll
C418S055100, C418S055400, C418S057000, C277S552000, C277S647000
Reexamination Certificate
active
07568897
ABSTRACT:
A compressor may include a housing, a compression mechanism supported within the housing, and a seal assembly. The housing may include a suction pressure region and a first discharge passage in communication with a discharge pressure region. The compression mechanism may include a second discharge passage in communication with the first discharge passage. The seal assembly may be sealingly engaged with the housing and the compression mechanism to define a chamber and to provide sealed communication between the first and second discharge passages. The seal assembly may include a seal member engaged with the compression mechanism and including a leg having an opening therein. The leg may isolate the chamber from the discharge pressure region when in a first position and may provide communication between the chamber and the discharge pressure region through the opening when in a second position different than the first position.
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Grassbaugh Walter T.
Prenger John D.
Stover Christopher
Su Xiaogeng
Zhu Hanqing
Davis Mary A
Denion Thomas E
Emerson Climate Technologies, Inc.
Harness & Dickey & Pierce P.L.C.
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