Mobile working platform

Details Mobile working platform Mobile working platform

1985-11-05

1986-11-25

Machado, Reinaldo P.

Fire escape, ladder, or scaffold

Means maintaining platform level on angularly movable support

Swingable support

B66F 1104

Patent

active

046243402

ABSTRACT:
A mobile working platform, particularly a so-called under-bridge lift, comprising a parallelogram type boom which is horizontally and vertically pivoted to a vehicle and which at its end facing away from the vehicle has a turntable which is rotatable by means of a hydraulic motor and at its circumference supports the angular end of an inner arm which is vertically pivotable by means of a piston and cylinder assembly which is mounted adjacent to the circumference of the turntable approximately diametrically opposite the mounting point of the inner arm. By means of a hydraulic cylinder, the inner arm is vertically pivoted to an intermediate arm which by means of a further hydraulic cylinder is vertically pivoted to an outer arm which vertically pivotally supports a platform or cage. Between the turntable and the platform or cage, motion transfer means in the form of rods and chains extend to keep the platform or cage in a horizontal position independently of the angle of inclination of the boom and arms.

REFERENCES:
patent: 3262517 (1966-07-01), Malec
patent: 3357517 (1967-12-01), Wagner
patent: 3411606 (1968-11-01), Oldakowski
patent: 3708037 (1973-01-01), Tranchero
patent: 3741143 (1973-06-01), McKinley
patent: 4461369 (1984-07-01), Amador

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