Pit-mounted load elevator

Details Pit-mounted load elevator Pit-mounted load elevator

1994-06-28

1996-02-13

Bollinger, David H.

Material or article handling

Apparatus for moving intersupporting articles into, within,...

Stack forming apparatus

4147922, 414495, B65G 5722

Patent

active

054907586

ABSTRACT:
A self-adjusting pneumatic load elevator is adapted for mounting in a pit so that it can be used with pallet trucks. The elevator has a base, a rotatable, horizontal load platform, a vertically expandable scissors linkage mechanically coupled between the load platform and the base, and an air actuator chamber. To accommodate a rectangular pit opening, the load platform has a circular, rotatable portion surrounded by a rectangular, non-rotatable transition frame which fits with small clearance in the pit opening. An automatic brake prevents the rotation of the load platform when it is flush with the floor, and lightweight, vertically movable skirts on the load platform can strike a worker's toe to warn of danger. To prevent dangerous rebounds, when the elevator fully descends, it automatically releases the air in the air actuator chamber.

REFERENCES:
patent: 3174722 (1965-03-01), Alm
patent: 3612300 (1971-10-01), Berghgracht
patent: 3702645 (1972-11-01), Shaw
patent: 4854421 (1989-08-01), Kawada

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