Power plants – Pressure fluid source and motor – Having a mechanical clutch or brake device in the power train
Patent
1992-12-28
1994-03-15
Look, Edward K.
Power plants
Pressure fluid source and motor
Having a mechanical clutch or brake device in the power train
60444, 91536, F16D 102
Patent
active
052937461
ABSTRACT:
A hydraulic control system has first and second actuators that can be selectively moved to a second operating position dependant upon the pressure of hydraulic fluid being simultaneously transmitted thereto through a common conduit. The force of the springs of the first and second actuators is selected so that when the pressure of the hydraulic fluid is at a preselected low pressure, only one of the actuators is moved to its second position and both of the actuators is moved to their second positions when the fluid is at a preselected high pressure. The use of a common conduit for carrying fluid to the actuators eliminates the expense and complexity of providing another flow path between rotatable parts of a vehicle.
REFERENCES:
patent: 3972185 (1976-08-01), Medina
patent: 3986357 (1976-10-01), Hoffmann
patent: 4481769 (1984-11-01), Nagahara
patent: 4712377 (1987-12-01), Yoshida et al.
Caterpillar Inc.
Grant John W.
Look Edward K.
Lopez F. Daniel
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