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US 3,944,899 AGranted
Control circuit for electrically driven vehicles
AssigneeJoseph Lucas (Industries) Limited
InventorMaurice James Wright
Life of this patent
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Abstract
In a control circuit for an electrically driven vehicle, there is an accelerator pedal which when depressed sets the armature current of a traction motor, and a brake pedal which when depressed provides electrical braking of the vehicle. The electrical braking is inhibited unless the vehicle speed is above a predetermined value.
Claims4
A control circuit for an electrically driven vehicle comprising in combination:
- A traction motor;
- an accelerator pedal;
- means sensitive to the position of the accelerator pedal for controlling the forward drive current to the motor;
- a brake pedal;
- braking means operable on actuation of the brake pedal for connecting the motor to provide controlled electrical braking of the vehicle;
- inhibiting means sensitive to the speed of the vehicle and inhibiting initiation of operation of said braking means when the brake pedal is actuated while the vehicle speed is below a predetermined value;
- and means for maintaining electrical braking, once commenced, after the vehicle speed falls below the predetermined level.
4 more elements
Dependencies are inferred from the claim text.