Door-operated boarding step for trucks

Details Door-operated boarding step for trucks Door-operated boarding step for trucks

1978-06-12

1980-04-29

Song, Robert R.

Land vehicles

Wheeled

Attachment

B60R 302

Patent

active

042003032

ABSTRACT:
A door-operated boarding step for trucks, and the like, has a first step member and a second step member telescopingly attached to one another, with the first step member being mountable on a vehicle beneath a door of the vehicle so as to permit the second step member to be extended relative to the first step member on opening of the vehicle door by an operator connected to the second step member and the door for providing a step beneath the door which facilitates movements between a cab of the truck and the surface supporting the vehicle. Extension of the second step member is done against the bias of a spring connected to the first step member and second member, which spring is deflected sufficiently to retract the second step member relative to the first step member when the door is moved from an open mode to the normal, closed mode.

REFERENCES:
patent: 2583894 (1952-01-01), Shuck
patent: 3572753 (1971-03-01), Claassen
patent: 3671058 (1972-06-01), Kent
patent: 3751068 (1973-08-01), Green

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