Movable cradle

Details Movable cradle Movable cradle

1989-06-29

1990-10-02

Machado, Reinaldo P.

Fire escape, ladder, or scaffold

Traversing, track-mounted

With vertically spaced second track

182142, 182150, 182187, E04G 310, E04G 316

Patent

active

049601857

ABSTRACT:
The invention relates to a vertically and horizontally movable work platform 4 for carrying out renovations to the concrete on reinforced concrete buildings or for replacing the structural protection on steel constructions. To increase the operational safety these work platforms 4 are held against the surfaces 1 of the buildings by attached magnetic plates 6. Since the tensions cables previously required are dispensed with, the weight of the upper carriage 2 from which the work platforms are suspended by cables is considerably reduced.

REFERENCES:
patent: 2881029 (1959-04-01), Tollefsen
patent: 3114433 (1963-12-01), Downs
patent: 3364520 (1968-09-01), Anderson
patent: 3375900 (1968-04-01), Conley et al.
patent: 3537545 (1970-11-01), Willis
patent: 3837428 (1974-09-01), Gish
patent: 4055139 (1977-10-01), Scheiding
patent: 4120378 (1978-10-01), Mills
patent: 4355699 (1982-10-01), Smith
patent: 4421205 (1983-12-01), Vranish

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