Hydrostatic Transmission

Details Hydrostatic Transmission Hydrostatic Transmission

1996-10-11

1998-12-22

Nguyen, Hoang

Power plants

Pressure fluid source and motor

Condition responsive control of motive fluid flow

60488, F16D 3102, F16D 3900

Patent

active

058507361

ABSTRACT:
A hydrostatic transmission constructed so that a check valve and a relief valve are made as compact as possible to supply oil to a closed circuit for connecting a hydraulic pump and a hydraulic motor, and to regulate maximum pressure in the closed circuit. A check valve and a relief valve are contained in a valve casing. A valve body of the relief valve is disposed opposite to a valve body of the check valve. A relief spring of the relief valve is retained by a cover detachably mounted to an open end of the valve casing, thereby facilitating pressure setting of the relief valve. The valve body of the relief valve is contained in a relief valve casing slidably disposed in the valve casing. A plunger, capable of urging the check valve in the opening direction via the relief valve casing, is provided in the cover, thereby enabling the check valve to be manually opened.

REFERENCES:
patent: 3583157 (1971-06-01), Adams et al.
patent: 3675421 (1972-07-01), Asmus
patent: 3699678 (1972-10-01), Swanson et al.
patent: 3748859 (1973-07-01), Pruvot
patent: 3788078 (1974-01-01), Rubenstein
patent: 4696162 (1987-09-01), Williams
patent: 4936095 (1990-06-01), Ross et al.
patent: 5333451 (1994-08-01), Sakikawa et al.
patent: 5588294 (1996-12-01), Sakakura et al.

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