Power driven tree stand

Details Power driven tree stand Power driven tree stand

1999-09-28

2000-06-27

Chin-Shue, Alvin

Fire escape, ladder, or scaffold

Scaffold external of shaft

182188, 182133, 182142, A45F 326

Patent

active

060795174

ABSTRACT:
A power driven tree stand including an elevator assembly having a pair of parallel primary rails and a pair of parallel secondary rails. A primary axle couples the primary rails and a secondary axle couples the secondary rails. A pair of primary tires are rotatably received on the primary axle. A pair of secondary tires are rotatably received on the secondary axle. A pair of parallel support rails have free first ends and second ends pivotably coupled by pins to the exterior ends of the primary rails and a plurality of tubular cross bars there between for receiving a wheelchair thereupon.

REFERENCES:
patent: 860359 (1907-07-01), Dudley
patent: 929034 (1909-07-01), Skelly
patent: 2654638 (1953-10-01), Elliott
patent: 3568797 (1971-03-01), Hardy
patent: 3727723 (1973-04-01), Pitcairn
patent: 4134474 (1979-01-01), Stavenau
patent: 4593789 (1986-06-01), Treants
patent: 5267632 (1993-12-01), Mintz
patent: 5647454 (1997-07-01), Fehr

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