Rotary expansible chamber devices – Interengaging rotating members – Like rotary members
Reexamination Certificate
2007-04-09
2011-11-01
Davis, Mary A (Department: 3748)
Rotary expansible chamber devices
Interengaging rotating members
Like rotary members
C418S178000, C418S179000
Reexamination Certificate
active
08047825
ABSTRACT:
A positive-displacement pump comprising a housing, a rotatable component disposed at least partially within the housing, and a film disposed at least partially between the housing and the rotatable component, where the film comprises a reinforcing material and a fluoropolymer material.
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Official Search Report of the European Patent Office in counterpart Application No. EP08251035 mailed Jul. 29, 2008.
Cooper Clark V.
Nardi Aaron T.
Davis Mary A
Kinney & Lange , P.A.
United Technologies Corporation
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