Vickers, Inc.

Jean J Schweitzer

Lowell D Hansen

J Richard Hurley

Howard J Sculthorpe

Walter J Zoya

A split-discharge balanced dual-lobe vane-type rotary hydraulic machine that comprises a housing, a rotor mounted within the housing and having a plurality of radially extending peripheral slots, and a plurality of vanes individually slidably mounted in the rotor slots. A cam ring within the housing surrounds the rotor and has a radially inwardly directed surface forming a track for sliding engagement with the vane. Opposed symmetrical pressure cavities are formed between the cam ring surface and the rotor, and fluid inlet and outlet passages in the housing are coupled to the fluid pressure cavities. The fluid inlet and outlet passages include a fluid inlet port opening into each cavity adjacent to one circumferential edge thereof, a first fluid outlet port opening into each cavity adjacent to the opposing circumferential edge thereof, and a second fluid outlet port opening into each cavity at a position circumferentially between the inlet and first outlet ports.

Power transmission

A fluid pressure translating device comprising a housing with a pumping mechanism therein including a rotary cylinder barrel having a plurality of cylinders with pistons slidable therein operatively associated with a cam block, each cylinder having a port opening to a valving base of the cylinder barrel, an inlet passage and outlet passage and a valve plate associated with the cylinder barrel and provided with inlet and outlet ports respectively in communication with the inlet and outlet passages. The cam block is rotatable to vary the circumferential position of the cam block relative to the valve plate thereby varying the displacement of the pumping mechanism.

Fluid pressure translating device

A reversible power transmission unit comprising a housing and a cam block rotatably mounted in the housing and a pumping mechanism associated with opposed inclined surfaces of the cam block. A common shaft is rotatably mounted in the cam block and has its ends extending beyond the cam block. Each pumping mechanism includes a cylinder barrel mounted on the shaft for rotation with the shaft and having a plurality of cylinders with pistons slidable therein and operatively associated with a surface of the cam block. Each cylinder has a port opening to a valve plate provided with inlet and outlet ports in communication with inlet and outlet passages at each end of the housing. When one of the pumping mechanisms is operated as a motor, it drives the other pumping mechanism as a pump.

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Brandon, MS, United States of America

Jean J Schweitzer