Hydrostatic machine with fixed or variable displacement

Details Hydrostatic machine with fixed or variable displacement Hydrostatic machine with fixed or variable displacement

1984-10-16

1986-04-01

Freeh, William L.

Motors: expansible chamber type

Three or more cylinders arranged in parallel radial or...

Cylinders parallel to rotation axis

192 65, 192 85A, 192 85AT, F16D 1100, F16D 1322, F01B 1304

Patent

active

045790434

ABSTRACT:
A hydrostatic machine, in particular of bent axis design comprises a clutch which is provided between the drive shaft and the pistons. The force necessary for clutch engagement is produced by hydraulic pressure forces which are either applied to the pistons or delivered by the pistons depending on whether the machine operates as a motor or as a pump. When the machine neither produces a moment nor receives a moment the clutch is automatically disengaged due to the reduction of the hydraulic pressure forces. According to the invention the clutch helps to prevent hydraulic losses of the machine while running idle and improves the overall efficiency.

REFERENCES:
patent: 652135 (1900-06-01), Nc Nair
patent: 3643433 (1972-02-01), Widmaier
patent: 3721161 (1973-03-01), Bobst
patent: 3808949 (1974-05-01), Munckie
patent: 4224859 (1980-09-01), Eisenmann
patent: 4271725 (1981-06-01), Takao
patent: 4291779 (1981-09-01), Mann
patent: 4382399 (1983-05-01), Lotter

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