Step stall prevention for vehicle steps

Details Step stall prevention for vehicle steps Step stall prevention for vehicle steps

1990-12-13

1992-02-04

Mitchell, David M.

Land vehicles

Wheeled

Attachment

B60R 302

Patent

active

050854500

ABSTRACT:
A system for extending and retracting a step, such as a step of a recreational vehicle, includes an electric motor coupled to extend and retract the step, and a circuit for energizing the motor. The circuit comprises a first circuit including a circuit breaker and connected to selectively energize the motor via the circuit breaker in one rotation direction to extend and retract the step, and a second circuit responsive to opening of the circuit breaker for energizing the motor in an opposite rotation direction to retract the step.

REFERENCES:
patent: 3403926 (1968-10-01), Way et al.
patent: 4027807 (1977-06-01), Thorley
patent: 4110673 (1978-08-01), Nagy et al.
patent: 4116457 (1978-09-01), Nerem et al.

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