Land vehicles – Wheeled – Attachment
Patent
1989-06-29
1991-04-16
Mitchell, David M.
Land vehicles
Wheeled
Attachment
182 89, B60R 302
Patent
active
050076540
ABSTRACT:
A vehicle step assembly for mounting to a truck structure permits forward and rearward swinging upon encountering obstacles and comprises an inverted U-shaped support bracket which can be affixed to a vehicle and a platform assembly which is rotatable about a shiftable axis interconnected with the support bracket. The support bracket also provides rotation guide channels for directing rotation and includes detents to vertically secure against rotation of the step in use or while the vehicle is in motion. The step assembly includes a horizontal cross member which rotates freely within cam shaped apertures in the support assembly and allows the rotational axis of the platform assembly to shift. Vertical support members fixedly mounted to the expanded metal step platform include guide pins which track the support guide channels and direct the platform assembly between its rigid vertical position and forward or rearward rotated positions.
REFERENCES:
patent: 2653036 (1953-09-01), Creel
patent: 2678832 (1984-05-01), Wright
patent: 2702195 (1955-02-01), Merrill
patent: 3068958 (1962-12-01), McCann
patent: 3854752 (1974-12-01), Flint et al.
patent: 4274648 (1981-06-01), Robins
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