Power plants – Pressure fluid source and motor – Condition responsive control of motive fluid flow
Patent
1988-12-22
1991-10-08
Look, Edward K.
Power plants
Pressure fluid source and motor
Condition responsive control of motive fluid flow
60488, 60489, 92157, F16H 3914, F16D 3108
Patent
active
050542893
ABSTRACT:
When a first rotating shaft is rotationally driven, it rotates a first cylinder barrel splined thereto, and a second cylinder barrel and a valve block united with the first cylinder barrel. In accordance with these rotations, first pistons in first cylinders slide circumferentially on the inclined face of a first swash plate so that they are reciprocated axially in the first cylinder barrel, and second pistons in second cylinders slide circumferentially on the inclined face of a second swash plate so that they are reciprocated axially in the second cylinder barrel. Simultaneously with these reciprocations, a first change-over valve is switched in accordance with the rotations of the first rotating shaft, and a second change-over valve is switched in accordance with the relative rotations of the first rotating shaft and the second rotating shaft. Thus, a high-pressure liquid discharged from the second cylinders during forward strokes of the second pistons is supplied via a second common liquid passage into the first cylinders during backward strokes of the first pistons, and a low-pressure liquid discharged from the first cylinders during forward strokes of the first pistons is sucked via a first common liquid passage into the second cylinders during backward strokes of the second pistons.
REFERENCES:
patent: 4745748 (1988-05-01), Hayashi et al.
patent: 4748898 (1988-06-01), Hayashi et al.
patent: 4781022 (1988-11-01), Hayashi et al.
patent: 4827721 (1989-05-01), Hayashi et al.
patent: 4854125 (1989-08-01), Inoue
patent: 4856279 (1989-08-01), Kawahara et al.
patent: 4860540 (1989-08-01), Hayashi et al.
Kapsalas George
Look Edward K.
Nagatomo Fluid Machinery Laboratory Limited
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