Rotary expansible chamber devices – With changeable working chamber magnitude – Spring or fluid biased movable member
Patent
1975-11-17
1977-06-21
Croyle, Carlton R.
Rotary expansible chamber devices
With changeable working chamber magnitude
Spring or fluid biased movable member
418 31, 418 54, F04C 1500
Patent
active
040308618
ABSTRACT:
A pressure compensated, variable volume, rotary piston device has a housing with an elongated cavity and inlet and exhaust ports; a reaction ring movable within the cavity and defining a cylindrical bore; a lenticular rotary piston rotatable and reciprocable radially within the bore and dividing it into first and second variable volume chambers; a shaft rotatably journalled in the housing and carrying a crankarm which constitutes the sole force transmitting means between shaft and piston and is operatively coupled to the piston so that shaft and piston rotate in a one-to-one ratio while the piston rocks relative to the crankarm and, without the use of phasing gears, the apices of the rotary piston remain in continuous contact with the bore in all positions of the rotary piston and in all positions of the reaction ring within the cavity and so cam the piston that it reciprocates within the bore as it rotates and varies the volume of the first and second chambers inversely from minimum to maximum and back to minimum during each revolution of the shaft; a reaction spring for resiliently urging the reaction ring to a position against a stop wherein the eccentricity between the axes of the shaft and the cylindrical bore is maximum; and means accessible from the exterior of the housing for selectively varying the force of the reaction spring to thereby adjust the fluid displacement.
REFERENCES:
patent: 1340625 (1920-05-01), Planche
patent: 1802887 (1931-04-01), Feyens
patent: 2633805 (1953-04-01), Haugdahl
Croyle Carlton R.
Kaiser Lee H.
Smith Leonard
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