Fire escape – ladder – or scaffold – Horizontal traversing - actuation – control – or response
Patent
1986-01-29
1986-12-23
Machado, Reinaldo P.
Fire escape, ladder, or scaffold
Horizontal traversing - actuation, control, or response
182 36, 182131, 182142, E04G 310, E04G 316
Patent
active
046307087
ABSTRACT:
An adjustable service platform apparatus for a gantry crane having an elongated base frame which includes a pair of horizontally sliding beams which are laterally extendible outboard in opposite directions from the base frame. Detachable towers with work platforms at the tops are secured to the ends of the sliding beams. The platforms can be raised and lowered and moved inboard and outboard along the crane by the hoist and trolley motions of the crane and can be laterally extended and retracted independently from the hoist and trolley motions of the crane. Operators standing on the work platforms can readily move them to provide access to and permit inspection of the structural elements of the crane's supporting structure from the top of the boom to part way down the base structure of the crane by means of work platform controls.
REFERENCES:
patent: 2067344 (1937-01-01), Ringe
patent: 3076522 (1963-02-01), Goodell
patent: 3927732 (1975-12-01), Ooka
patent: 4103861 (1978-08-01), Buchler
patent: 4154318 (1979-05-01), Malleone
patent: 4546852 (1985-10-01), Martin et al.
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