Hydraulic speed control system with braking

Claim 1

FOR USE IN AN INDUSTRIAL TRUCK HAVING NORMALLY-APPLIED BRAKE MEANS, A PAIR OF ELECTRIC DRIVE MOTORS CONNECTED NORMALLY IN SERIES CIRCUIT AND VARIABLE RESISTOR MEANS FOR CONTROLLING THE CURRENT TO THE MOTORS; A CONTROL SYSTEM COMPRISING A FORWARD MOTOR DIRECTION CONTROL SWITCH; A REVERSE MOTOR DIRECTION CONTROL SWITCH; A MASTER FLUID ACTUATOR HAVING A CYLINDER, A FLUID RESERVOIR FOR SUPPLYING SAID CYLINDER WITH FLUID AND A PISTON SLIDABLY DISPOSED IN SAID CYLINDER FOR GENERATING FLUID PRESSURE; A MANUALLY OPERABLE CONTROL HANDLE OPERATIVELY CONNECTED TO SAID PISTON, SAID HANDLE BEING MOVABLE IN A FIRST DIRECTION TO ACTUATE SAID FORWARD MOTOR DIRECTION CONTROL SWITCH TO CONDITION THE MOTORS FOR FORWARD DRIVE AND THEN MOVABLE IN A SECOND DIRECTION SO THAT SAID PISTON IS ACTUATED TO GENERATE FLUID PRESSURE, SAID HANDLE ALSO BEING MOVABLE IN A THIRD DIRECTION TO ACTUATE SAID REVERSE MOTOR DIRECTION CONTROL SWITCH TO CONDITION THE MOTORS FOR REVERSE DRIVE AND THEN MOVABLE IN SAID SECOND DIRECTION SO THAT SAID PISTON IS ACTUATED TO GENERATE FLUID PRESSURE; FLUID CONDUIT MEANS CONNECTED TO SAID CYLINDER; A FLUID PRESSURE ACCUMULATOR CONNECTED TO SAID FLUID CONDUIT MEANS; FIRST PISTON AND CYLINDER TYPE ACTUATOR MEANS CONNECTED TO SAID FLUID CONDUIT MEANS, RESPONSIVE TO A FIRST