Power plants – Pressure fluid source and motor – Having condition responsive control in a system of distinct...
Patent
1983-10-24
1985-10-08
Garrett, Robert E.
Power plants
Pressure fluid source and motor
Having condition responsive control in a system of distinct...
60425, 60426, 74687, F15B 1800
Patent
active
045452024
ABSTRACT:
A system for limiting the torque of a multiple hydraulic system power drive unit wherein plural hydraulic motors are connected to a common torque-summing output device. The system has at least two separate hydraulic circuits, with there being a pressure-limiting valve in each circuit which controls the porting of motor pressure to a low pressure return line and which sums the motor pressure existing in the fluid circuit in which the valve is positioned and the pressure in the other hydraulic circuit whereby the maximum pressure of the fluid delivered to the motor cannot exceed one-half the maximum pressure when both circuits are active to limit the torque applied to the torque-summing output device. In a system having two separate hydraulic circuits, the pressure-limiting valve has a first pressure-responsive area exposed to motor pressure in one circuit and a second pressure-responsive area exposed to pressure in the other circuit, with the latter pressure-responsive area being one-half the first pressure-responsive area.
REFERENCES:
patent: 1034242 (1912-07-01), Johnson
patent: 2985243 (1961-05-01), Tyler et al.
patent: 3154925 (1964-11-01), De Vita
patent: 3416311 (1968-12-01), Yoshizawa
patent: 3643922 (1972-02-01), Van Der Linde
patent: 3662550 (1972-05-01), Lichtfuss
patent: 3695783 (1972-10-01), Soyland et al.
patent: 3716308 (1973-02-01), Kobald
patent: 3720059 (1973-03-01), Schurawski et al.
patent: 3723026 (1973-03-01), Soyland et al.
patent: 3767327 (1973-10-01), Wagenseil
patent: 3768928 (1973-10-01), Miller et al.
patent: 3820257 (1974-06-01), Junck et al.
patent: 3868821 (1975-03-01), Ratliff et al.
patent: 3910044 (1975-10-01), Symmank
patent: 3998053 (1976-12-01), Johnson
patent: 4089166 (1978-05-01), Ratliff et al.
Garrett Robert E.
Husar John M.
Sundstrand Corporation
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