Multi-stage vehicle hoist

Details Multi-stage vehicle hoist Multi-stage vehicle hoist

1980-09-24

1984-06-05

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

187 864, 254 93L, B66B 920

Patent

active

044523408

ABSTRACT:
A vehicle hoist includes a wheel lift operable to raise and lower a vehicle by its wheels, and a frame lift operable to raise and lower a vehicle by its frame. Each lift is disposed and operable to raise and lower the same vehicle independently of the other, one of the lifts being permanently mounted on the other to be raised and lowered thereby when the other is operated to raise and lower the vehicle. In its preferred form the lifts are hydraulically operated, the skirt of the lower piston being upwardly extended to form a chamber for the piston of the upper lift.

REFERENCES:
patent: 1911204 (1933-05-01), Perry
patent: 1942276 (1934-01-01), Clapp
patent: 2095051 (1937-10-01), Bristol et al.
patent: 2262121 (1941-11-01), Snider
patent: 2381664 (1945-08-01), Hansen
patent: 2892547 (1959-06-01), Whitaker
patent: 2902116 (1959-09-01), Ridgeway et al.
patent: 3048237 (1962-08-01), Rutherford
patent: 3186312 (1965-06-01), Hott et al.
patent: 3539036 (1970-11-01), Halstead
patent: 3724602 (1973-04-01), Hernick
patent: 4217972 (1980-08-01), Jones

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