Automotive floor jack

Details Automotive floor jack Automotive floor jack

1989-02-13

1990-04-03

Hartman, Judy

Implements or apparatus for applying pushing or pulling force

Fluid pressure

Vehicle attached

254 89H, 254 93H, B66F 324

Patent

active

049134027

ABSTRACT:
A portable automotive jack is provided having a generally triangular configuration defined by first and second pairs of pneumatic cylinders. Specifically, the cylinders of one of the pairs of are spaced apart from one another and straddle the cylinders of the other pair so that the pairs of cylinders define the legs of a triangle. A lift plate is mounted to the upper ends of the hydraulic cylinders at the apex of the triangle whereby actuation of the cylinders moves the lift plate relative to the base member to permit jacking of a vehicle therewith. The jacking assembly, by virtue of a common source of air pressure and flexible mounts, adjusts in angle and position to accommodate changes in angle of the vehicle as it is bieng jacked thus providing a device which has an inherent stability and relative insensitivity to the hardness and flatness of the jacking surface and the construction of modern cars.

REFERENCES:
patent: 1961501 (1934-06-01), Liebler
patent: 2024291 (1935-12-01), Jackson
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patent: 3608863 (1971-09-01), Gaardner
patent: 4690250 (1987-09-01), Bergstrom

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