Platform leveling apparatus

Details Platform leveling apparatus Platform leveling apparatus

1990-08-30

1992-01-21

Chin-Shue, Alvin C.

Fire escape, ladder, or scaffold

Means maintaining platform level on angularly movable support

Swingable support

182148, B66F 1104

Patent

active

050820850

ABSTRACT:
A mobile aerial lift platform vehicle of the type having an upstanding pedestal and an elevating assembly mounted on the pedestal to raise and lower the work platform while maintaining the center of gravity of the platform within the base area defined by the wheels of the vehicle. The improvement is that the pedestal is pivotally mounted to the chassis of the vehicle for pivotal movement about a first axis extending fore and aft of the chassis and about a second axis extending from side to side of the chassis. Two hydraulic rams for provided, each of which will pivot the pedestal about one only of the axes, so that the pedestal may be leveled even through the vehicle is on unlevel ground.

REFERENCES:
patent: 3584705 (1971-06-01), Ruegg
patent: 3891056 (1975-06-01), Ashworth
patent: 4169511 (1979-10-01), Brown
patent: 4558758 (1985-12-01), Littman et al.
patent: 4565486 (1986-01-01), Crawford et al.
patent: 4762199 (1988-08-01), Holmes
patent: 4953666 (1990-09-01), Ridings

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