Stacker crane

Details Stacker crane Stacker crane

2006-03-28

2006-03-28

Lillis, Eileen D. (Department: 3652)

Elevator, industrial lift truck, or stationary lift for vehicle

Transportable elevator

Wheel supported

C187S263000, C414S266000, C182S120000

Reexamination Certificate

active

07017713

ABSTRACT:
A mast in a conventional stacker crane is configured to extend in a vertical direction. Accordingly, the mast is not sufficiently rigid, and may swing in a running direction during running or when the running operation is stopped. An attempt to increase the rigidity results in a thicker mast, thus increasing the size of the stacker crane. In order to solve this problem, a mast is extended vertically from a lower frame and a platform that elevates and lowers along the mast wherein a ladder is extended vertically at a position opposite to the mast across the platform in a direction in which the lower frame runs, and a top of the mast and a top of the ladder is connected together via an upper frame.

REFERENCES:
patent: 2847131 (1958-08-01), Miller
patent: 4319662 (1982-03-01), Liston
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patent: 08324713 (1996-12-01), None
patent: 10203607 (1998-08-01), None
patent: 10212004 (1998-08-01), None
patent: 11322011 (1999-11-01), None

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