Portable lift for lifting motor vehicles

Details Portable lift for lifting motor vehicles Portable lift for lifting motor vehicles

1989-04-04

1991-06-25

Valenza, Joseph E.

Elevator, industrial lift truck, or stationary lift for vehicle

Stationary lift for roadway vehicle or required component...

Having specific drive means for support

254 89H, B60S 1300

Patent

active

050258923

ABSTRACT:
A portable lift for lifting motor vehicles comprises a lift arm (6) the arm being pivotally articulated and lowerable into a position between lateral parts of base frame (1) which form a drive-on ramp, with lateral support arms (7) mounted on its free ends, the arms being guided by a parallelogram guide (10) parallel to the plane of the ground. To pivot lift arm (6), a hydraulic cylinder and piston assembly (3) is used which is mounted at a distance from pivot axis (5) of lift arm (6) which, at the maximum operating height of support arms (7), forms a pivot angle (alpha) of the axis of cylinder and piston assembly (3) to the plane of the ground between 75 degrees and 105 degrees. Cylinder and piston assembly (3) engages lift arm (6) at a distance from the free end which corresponds to at least 15 percent of the length of lift arm (6), and lift arm (6) is formed between the point of engagement of cylinder and piston assembly ( 3) and the articulation point of support arms (7) essentially as U-shaped members open toward the free end thereof.

REFERENCES:
patent: 2576908 (1951-11-01), Wallace
patent: 2629583 (1953-02-01), Mueller
patent: 3065573 (1962-11-01), Goldberg
patent: 3276548 (1966-10-01), Woor et al.
patent: 3783976 (1974-01-01), Kerr
patent: 3806109 (1974-04-01), Weber et al.
patent: 3814414 (1974-06-01), Chapa
patent: 4323141 (1982-04-01), Ragan et al.
patent: 4724930 (1988-02-01), VanLierop
patent: 4798266 (1989-01-01), Finkbeiner

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