Rotary expansible chamber devices – Working member has planetary or planetating movement – Plural working members or chambers
Reexamination Certificate
2005-04-26
2005-04-26
Trieu, Theresa (Department: 3748)
Rotary expansible chamber devices
Working member has planetary or planetating movement
Plural working members or chambers
C418S270000, C418S171000
Reexamination Certificate
active
06884048
ABSTRACT:
A rotary fluid pressure device has a first oil passage with relatively high pressure fluid therein surrounding the gear set; a plurality of second oil passageways connecting the first oil passageway to the expanding and contracting oil chambers; and fluid non-return valves in each of the second oil passageways to permit the flow of oil therethrough only in a direction to the oil chambers from the first oil passageway to the oil chambers.
REFERENCES:
patent: 3514234 (1970-05-01), Albert et al.
patent: 3775031 (1973-11-01), Hansen
patent: 3778198 (1973-12-01), Giversen
patent: 3892503 (1975-07-01), Getman
patent: 3907465 (1975-09-01), Dorff et al.
patent: 4767292 (1988-08-01), Kinder
patent: 6033195 (2000-03-01), Uppel
patent: 6126424 (2000-10-01), Wenker et al.
patent: 412403 (1991-02-01), None
Pedersen Jorgen
Petersen Hans Christian
Sauer-Danfoss (Nordborg)
Trieu Theresa
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