Lift truck

Details Lift truck Lift truck

1983-04-22

1985-11-12

Rolla, Joseph J.

Elevator, industrial lift truck, or stationary lift for vehicle

Stationary lift for roadway vehicle or required component...

Having specific drive means for support

187 95, 182141, B66B 920, B66B 702

Patent

active

045522502

ABSTRACT:
A lift truck having a frame and a two-stage telescopic mast in which an outer, movable mast is mounted to telescope over an inner mast which is fixed to the frame, each mast having a substantially continuous, unitary tubular body which provides superior strength characteristics in response to torsional loads and bending moments. The masts each include vertically extending beams, integral with the tubular bodies thereof, having tracks to receive rollers mounted to the beams so that the only contact between the masts is by the rollers. The beams of the outer mast include tracks which receive the rollers of a platform having a lifting fork structure and which is vertically movable relative to the outer mast.

REFERENCES:
patent: Re24958 (1961-03-01), Ehmann
patent: 3035663 (1962-05-01), Mehlmann
patent: 3095945 (1963-07-01), Mitchell
patent: 3344890 (1967-10-01), Loef
patent: 3937346 (1976-02-01), van der Laan
patent: 3998346 (1976-12-01), Gibson et al.
patent: 4087626 (1978-05-01), Luebrecht et al.
patent: 4236862 (1980-12-01), McCormick
patent: 4354579 (1982-10-01), Low

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