Abstract: A steering system for a vehicle having a hydraulic steering mechanism, and including an accumulator for maintaining a supply of pressurized hydraulic fluid to the steering mechanism. The hydraulic fluid for the steering mechanism is supplied in some circumstances by a hydraulic pump which operates only when the vehicle is moving. Two valves are connected in series and arranged to discharge the accumulator when both valves are open, one of the valves arranged to be opened when the engine stops and the other arranged to be opened when the vehicle driven pump stops.

Abstract: An auxiliary speed control system for a vehical having an engine, a multiple ratio transmission and an operator's foot pedal for varying the engine speed. To obtain a vehicle speed which is different from any of those normally provided by the multiple ratio transmission, a device is moved into proximity to the operator's foot pedal. The device is contacted by the foot pedal when the foot pedal is depressed. When the speed of the vehicle reaches a predetermined maximum, the device acts on the foot pedal to prevent the operator from exceeding the selected speed.

Abstract: An auxiliary speed control system for a vehicle having an engine, a multiple ratio transmission and an operator's foot pedal for varying the engine speed. To obtain a vehicle speed which is different from any of those normally provided by the multiple ratio transmission, a device is moved into proximity to the operator's foot pedal. The device is contacted by the foot pedal when the foot pedal is depressed. When the speed of the vehicle reaches a predetermined maximum, the device acts on the foot pedal to prevent the operator from exceeding the selected speed.