Horizontally supported planar surfaces – Folding – With vertical adjustability
Patent
1975-12-05
1976-12-28
Mitchell, James C.
Horizontally supported planar surfaces
Folding
With vertical adjustability
A47B 300
Patent
active
039994910
ABSTRACT:
An elevationally adjustable folding stage with simplified one-man adjustment of height. The stage has two rectangular stage portions which are pivotable towards each other to a vertical storage position centered over a base frame containing main support legs. Outer support legs attached to the outer ends of the two stage members are adustable in length. Auxiliary support legs which are longer than the main support legs are mounted to the undersides of the two stage members adjacent the main support legs. For lower stage position, the auxiliary legs are folded up, and for the higher stage position the auxiliary legs are brought to their extended position while the stage members are folded. As the stage members are brought down to their horizontal position, a rocking action about the extended auxiliary leg lifts the stage to the upper position. The auxiliary legs and outer legs are optionally extendable to another higher position. In a preferred embodiment, the auxiliary legs have a curved ground contact portion to assist in the rocking action.
REFERENCES:
patent: 2645539 (1953-07-01), Thompson
patent: 2978754 (1961-04-01), Wilson
patent: 3351029 (1967-11-01), Bue
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