Rotary expansible chamber devices – Multistage – Sliding abutment
Reexamination Certificate
2011-01-11
2011-01-11
Denion, Thomas E (Department: 3748)
Rotary expansible chamber devices
Multistage
Sliding abutment
C418S013000, C418S015000, C418S148000, C418S267000, C418S268000
Reexamination Certificate
active
07866962
ABSTRACT:
A two-stage rotary compressor having a compression mechanism including a single muffler housing member. The single muffler housing member at least partially defines an intermediate pressure discharge cavity and a discharge pressure discharge cavity. In one exemplary embodiment, the compression mechanism includes a cylinder block having a plurality of vanes positioned within slots formed in an inner cylindrical surface of the cylinder block. The slots are in fluid communication with the discharge pressure discharge cavity and receive discharge pressure working fluid to bias the vanes radially inwardly. In another exemplary embodiment, the cylinder block includes a plurality of passages for the delivery of working fluid to and from the cylinder block.
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Baker & Daniels LLP
Davis Mary A
Denion Thomas E
Tecumseh Products Company
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