Brake and controller arrangement for electric industrial truck

Claim 1

IN AN INDUSTRIAL TRUCK, A TRACTION WHEEL, AN ELECTRIC TRACTION MOTOR, MEANS OPERATIVELY CONNECTING SAID TRACTION MOTOR TO SAID TRACTION WHEEL WHEREBY OPERATION OF SAID MOTOR DRIVES SAID TRACTION WHEEL, A FLUID PRESSURE OPERABLE ELECTRIC CONTROLLER UNIT OPERATIVELY CONNECTED WITH SAID TRACTION MOTOR AND OPERATED BY A CHANGE IN FLUID PRESSURE APPLIED THERETO TO ENERGIZE SAID TRACTION MOTOR TO DRIVE SAID TRACTION WHEEL, A BRAKE UNIT FOR APPLYING A BRAKING FORCE TO SAID TRUCK AND OPERABLE BY A CHANGE IN FLUID PRESSURE APPLIED THERETO TO RELEASE SAID BRAKING FORCE, MANUALLY OPERABLE PUMP MEANS, CONDUIT MEANS CONNECTING SAID PUMP MEANS TO SAID CONTROLLER UNIT AND TO SAID BRAKE UNIT AND THROUGH WHICH OPERATION OF SAID MANUALLY OPERABLE PUMP MEANS APPLIES FLUID PRESSURE TO SAID BRAKE UNIT AND TO SAID CONTROLLER UNIT AND MEANS CONTROLLED BY THE APPLICATION OF PRESSURE BY SAID MANUALLY OPERABLE PUMP MEANS TO EFFECT SEQUENTIAL OPERATION OF SAID BRAKE UNIT AND CONTROLLER UNIT SO AS TO FIRST RELEASE SAID BRAKING FORCE AND THEREAFTER TO OPERATE SAID CONTROLLER UNIT TO ENERGIZEE SAID MOTOR TO DRIVE SAID TRACTION WHEEL.