Vehicle road speed control system

Claim 1

A VEHICLE SPEED AND LOAD-DEMAND RESPONSIVE CONTROL SYSTEM FOR A VEHICLE ENGINE HAVING A THROTTLE VALVE AND AN INTAKE MANIFOLD CONTROLLED BY THE THROTTLE VALVE, SAID CONTROL SYSTEM COMPRISING, A SERVO HAVING A MOVABLE WALL CONNECTIBLE TO SAID THROTTLE VALVE FOR ACTUATION THEREOF, FIRST CONDUIT MEANS FOR CONNECTING THE ENGINE INTAKE MANIFOLD TO SAID SERVO TO PROVIDE ENGINE INTAKE MANIFOLD VACUUM THERETO FOR POWERING SAID SERVO, SECOND CONDUIT MEANS HAVING VEHICLE SPEED SENSITIVE MEANS THEREIN AND CONNECTED WITH SAID SERVO, SAID VEHICLE SPEED SENSITIVE MEANS ACTING THROUGH SAID SECOND CONDUIT MEANS TO MODIFY VACUUM ACTING ON SAID SERVO MOVABLE WALL IN ACCORDANCE WITH VEHICLE SPEED, AND VARIABLE RESTRICTION VALVE MEANS IN SAID FIRST CONDUIT MEANS HAVING A MOVABLE ELEMENT OPERATIVELY CONNECTED WITH SAID SERVO MOVABLE WALL TO INCREASINGLY AND DECREASINGLY RESTRICT DELIVERY OF VACUUM TO SAID SERVO FROM SAID FIRST CONDUIT MEANS IN DIRECT RELATIONSHIP TO MANIFOLD VACUUM VARIATIONS REFLECTING CHANGING LOAD-DEMAND AND RESULTING FROM OPENING AND CLOSING MOVEMENT OF THE THROTTLE VALVE UNDER CONTROL OF SAID SERVO.