Implements or apparatus for applying pushing or pulling force – Fluid pressure – Vehicle attached
Patent
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.
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