Auxiliary release apparatus for a hydraulic pressure...

Details Auxiliary release apparatus for a hydraulic pressure... Auxiliary release apparatus for a hydraulic pressure...

B - Operations, Transporting

60

T

303/70

B60T 13/12 (2006.01) B60T 13/22 (2006.01) B60T 17/02 (2006.01)

Patent

CA 1087224

AUXILIARY RELEASE APPARATUS FOR A HYDRAULIC PRESSURE RELEASABLE BRAKE Abstract An auxiliary release apparatus for use with a hydraulic pressure releasable brake having a principal source of hydraulic pressure comprises an auxiliary source of hydraulic pressure selectively connectable to the brake for releasing the brake when the principal source of hydraulic pressure is not operating. The auxiliary release apparatus includes a shuttle valve and a relief valve for automatically disconnecting the auxiliary source and reconnecting the prin- cipal source of hydraulic pressure from the brake when the prin- cipal source of hydraulic pressure is operating. The auxiliary source of hydraulic pressure includes a cylinder, a hand pump comprising a handle and a piston connected to the handle and disposed in the cylinder, a fluid supply reservoir and suitable connection lines between the fluid supply and the cylinder. The relief valve also regulates the amount of pressure provided to the brake by the hand pump.

306509

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