Expandable scaffold for hopper

Details Expandable scaffold for hopper Expandable scaffold for hopper

1994-11-28

1996-07-09

Chin-Shue, Alvin C.

Fire escape, ladder, or scaffold

Scaffold supported internally on shaft

182152, 182150, E04G 310

Patent

active

055335926

ABSTRACT:
This invention relates to an expandable scaffold for use with hoppers and the like which can fold up to pass through a narrow or confined opening. The scaffold can be expanded in the interior of the hopper thereby providing the operator with a place to stand while working. The scaffold comprises attachment means for attaching the scaffold at a top end to a hoist or crane, an articulated frame including a plurality of bars joined together by pivot connection means, folding means connected to the attachment means at one end and to the articulated frame at an other end, scaffold flooring mounted on the articulated frame for supporting an individual, and a plurality of suspension means.

REFERENCES:
patent: 1090856 (1914-03-01), Johnson
patent: 2221133 (1940-11-01), Gladville
patent: 3080941 (1963-03-01), Fuller
patent: 3166154 (1965-01-01), Titzel
patent: 3454133 (1969-07-01), Gregord
patent: 3994365 (1976-11-01), Petermann et al.
patent: 4058184 (1977-11-01), Stuart
patent: 4095670 (1978-06-01), Martin
patent: 4168052 (1979-09-01), Calderaro
patent: 5183629 (1993-02-01), Batistoni

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