Land vehicles – Wheeled – Attachment
Patent
1978-06-06
1980-06-03
Song, Robert R.
Land vehicles
Wheeled
Attachment
B60R 302
Patent
active
042058627
ABSTRACT:
A truck ladder assembly for attachment to the underside of a truckbed includes a ladder portion movable between a first operable position providing easy access to the truckbed and a second collapsed position providing an unobstructive storage of the ladder portion. The truck ladder assembly includes a mounting frame and a ladder portion having stabilizer arms and an unlatching device. The mounting frame is attached to the underside of the truckbed with the ladder portion pivotably attached to the mounting frame by a pair of spacing members extending at right angles to the ladder portion. First and second stabilizer arms, which are pivotably attached to the ladder portion, each include a pair of notches that releasably engage the mounting frame. The unlatching device may include first and second release levers which are pivotably attached to the ladder portion and are provided in close proximity to the stabilizer arms to facilitate the disengagement of the stabilizer arms from the mounting frame. The unlatching device may also include a bar member which is pivotably attached to the mounting frame by an actuation frame. The actuation frame extends towards the ladder portion to facilitate unlatching of the stabilizer arms by an operator. The weight of the ladder portion cooperates with the location and orientation of the notches of the stabilizer arms to securely position the ladder portion in the first and second positions.
REFERENCES:
patent: 1118584 (1914-11-01), Roebuck
patent: 2246986 (1941-06-01), Pellegrini
patent: 2670968 (1954-03-01), Duffy
patent: 3068958 (1962-12-01), McCann
patent: 3833240 (1974-09-01), Weiler
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