Parking brake release for transmission clutch
AssigneeAllis-Chalmers Corporation
InventorJohn W. Barth
Life of this patent
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Abstract
A vehicle control system including a hydraulically actuated transmission with transmission control means and a vehicle brake for braking the vehicle with interconnecting means for neutralizing power transmission through the transmission when the parking brake is actuated.
Claims5
A vehicle control system comprising, a source of pressurized fluid, a hydraulically actuated vehicle transmission, a transmission shift selector valve for selectively engaging said transmission, a mechanically operated vehicle parking friction brake, brake operating means including, a brake lever, a brake actuating means operatively connected between said brake lever and said vehicle parking brake for actuating said vehicle parking brake, a cutoff valve connected through said shift selector valve between said source of pressurized fluid and said transmission, a cable connected between said brake operating means and said transmission cutoff valve for operating said cutoff valve to interrupt communication between said source of pressurized fluid and said transmission for rendering said transmission inoperative when said vehicle parking brake is actuated.
Dependencies are inferred from the claim text.