Electric hydraulic jack/air pump

Details Electric hydraulic jack/air pump Electric hydraulic jack/air pump

1992-05-26

1993-05-18

Watson, Robert C.

Implements or apparatus for applying pushing or pulling force

Fluid pressure

Vehicle attached

254 1, 254124, B66F 324

Patent

active

052113752

ABSTRACT:
An electric hydraulic jack/air pump includes a base on which a hydraulic assembly, an air pump assembly, and a transmission assembly are mounted. The hydraulic jack assembly includes a first cylinder for effecting a lifting function upon reciprocating motion of a first piston. The air pump assembly includes a second cylinder for effecting an air-filling function upon reciprocating motion of a second piston. The transmission assembly includes a motor electrically connectable to a power source, a shaft driven by the motor, a wheel eccentrically mounted on the shaft, and a ring securely mounted around the wheel. The first and second pistons are respectively connected to the ring to effect the lifting and air-filling functions.

REFERENCES:
patent: 1983444 (1934-12-01), Dry
patent: 2458590 (1949-01-01), Harris et al.
patent: 3972509 (1976-08-01), Cancilla
patent: 4653727 (1987-03-01), Chang et al.
patent: 4678162 (1987-07-01), Yang
patent: 4706937 (1987-11-01), Clung
patent: 4741511 (1988-05-01), Yang
patent: 4746097 (1988-05-01), Chung et al.
patent: 4775132 (1988-10-01), Yang
patent: 4925158 (1990-05-01), Yang

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