Apparatus for control of a vehicle constant speed mechanism

Claim 1

Apparatus for constant speed control of vehicle travel speed, comprising: a throttle servo means, a first electrical circuit providing an electrical signal responsive to actual vehicle speed, means for establishing a desired vehicle speed, a second electrical circuit for providing a second electric signal responsive to the desired vehicle speed, a third electrical circuit including a potentiometer for obtaining a negative feedback signal responsive to throttle valve opening degree, said third circuit being connected with said second circuit, for varying said desired vehicle speed, a fourth electric circuit for providing an artificial throttle valve opening degree signal corresponding to the vehicle running condition when traveling on an even traffic surface at a speed equal to said actual vehicle speed by modifying said first signal, a fifth electric circuit for memorizing said second electric signal, a sixth electric circuit for replacing said negative feedback signal from said third electric circuit with said artificial throttle valve opening degree signal upon operation of said means, and a seventh electric circuit for comparing said memorized signal in said fifth circuit with said first electric signal for the control of said throttle servo means.