Hydraulic platforms

Details Hydraulic platforms Hydraulic platforms

1979-03-19

1980-09-16

Machado, Reinaldo P.

Fire escape, ladder, or scaffold

Means maintaining platform level on angularly movable support

Swingable support

212238, B66F 1104

Patent

active

042224578

ABSTRACT:
An hydraulic platform comprises a support structure which mounts a boom assembly comprising a plurality of booms pivotally connected in end-to-end relationship and carrying on its free end a working platform or cage, hydraulic actuator means for pivoting the booms relative to the supporting structure and one another to carry the working platform or cage to a variety of positions remote from the support structure and having a first boom pivotally connected to the support structure, a second boom pivotally connected to the free end of said first boom, first hydraulic cylinder means for effecting pivoting movement of said first boom relative to the support structure between a first inoperative position and a variety of operative positions, second hydraulic cylinder means connected with said second boom for effecting pivoting movement of said second boom relative to said first boom, said hydraulic cylinder means being secured to a member which is pivotally connected with said support structure at a position offset from the pivotal connection between said first boom and said support structure.

REFERENCES:
patent: 3064754 (1962-11-01), Broderson
patent: 3379279 (1968-04-01), Slusher
patent: 3461989 (1969-08-01), Prescott
patent: 3604533 (1971-09-01), Eckels
patent: 3844378 (1974-10-01), Balogh

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