Maintaining hydrostatic system control pressure

Details Maintaining hydrostatic system control pressure Maintaining hydrostatic system control pressure

F - Mech Eng,Light,Heat,Weapons

16

H

138/41.1

F16H 39/02 (2006.01) F17D 5/04 (2006.01)

Patent

CA 1173723

Abstract of the Disclosure Maintaining Hydrostatic System Control Pressure A hydrostatic transmission includes a variable displacement pump for driving a fluid motor in first and second directions. First and second high pressure conduits connects the pump and motor in a continuous fluid circuit. A control pump supplies make-up fluid to the first and second high pressure conduits and simultaneously provides pressurized control fluid to a system control for controlling the operation of the hydrostatic transmission. First and second low pressure conduits are respectively disposed about the first and second high pressure conduits and defines first and second spaces therebetween. A pressure control arrangement is connected to the first and second spaces to control the maximum pressure level in the spaces upon the failure of one of the high pressure conduits. By controlling the pressure level in the spaces, pressurized control fluid is maintained for the system control.

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