Hydraulically elevatable access equipment

Details Hydraulically elevatable access equipment Hydraulically elevatable access equipment

1984-07-26

1987-08-18

Machado, Reinaldo P.

Fire escape, ladder, or scaffold

Means maintaining platform level on angularly movable support

Swingable support

182 63, 182 19, 182 625, B66F 1104

Patent

active

046870733

ABSTRACT:
Access equipment including a vehicle (10) on which stands a mast (14) movable between horizontal and vertical positions and mounted for rotation about an axis (13). The mast is telescopically extendible and carries a pivoted boom (17) which is also telescopically extendible and carries a further boom (19) with a working platform (20) thereon. Booms (17, 19) can operate only when the mast (14) is vertical. A cable system maintains platform (20) level for all positions of booms (17, 19) and at least two sets of conduits extend from the vehicle (10) to the platform (20). A take-up system for maintaining the conduits taut is located in casing (54) attached to mast (14) and includes sets of rollers (61 to 69) for supporting the conduits around curved paths and preventing them from becoming entangled.

REFERENCES:
patent: 1531982 (1925-03-01), Sago
patent: 3305220 (1967-02-01), Nevulis
patent: 3461989 (1969-08-01), Prescott
patent: 3524521 (1970-08-01), Boomgaarder
patent: 3732743 (1973-05-01), Ballard
patent: 3842933 (1974-10-01), Clark
patent: 3891056 (1975-06-01), Ashworth
patent: 3958377 (1976-05-01), Milner
patent: 4081055 (1978-03-01), Johnson
patent: 4088200 (1978-05-01), Cowley
patent: 4314622 (1982-02-01), Lindquist
patent: 4411368 (1983-10-01), Manjot

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