Scroll machine with seal

Rotary expansible chamber devices – Working member has planetary or planetating movement – Helical working member – e.g. – scroll

Reexamination Certificate

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Details

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.

REFERENCES:
patent: 4993928 (1991-02-01), Fraser, Jr.
patent: 5447418 (1995-09-01), Takeda et al.
patent: 5494422 (1996-02-01), Ukai et al.
patent: 5588820 (1996-12-01), Hill et al.
patent: 5803716 (1998-09-01), Wallis et al.
patent: 6027321 (2000-02-01), Shim et al.
patent: 6077057 (2000-06-01), Hugenroth et al.
patent: 6171088 (2001-01-01), Sun et al.
patent: 6267565 (2001-07-01), Seibel et al.
patent: 7338265 (2008-03-01), Grassbaugh et al.

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