Jack having alternate hydraulic lifting and air pump functions u

Details Jack having alternate hydraulic lifting and air pump functions u Jack having alternate hydraulic lifting and air pump functions u

1986-08-14

1988-05-03

Watson, Robert C.

Implements or apparatus for applying pushing or pulling force

Fluid pressure

Vehicle attached

254 1, B66F 324

Patent

active

047415118

ABSTRACT:
A hydraulic jack adapted to provide an auxiliary air pumping function is disclosed. The jack has a hydraulically-actuated lifting mechanism, an air pump and a reversible electric motor having a drive shaft. A first clutch means operatively couples the drive shaft to the lifting mechanism. A second clutch means operatively couples the drive shaft to the air pump. Each of said clutch means are independently operable and are oppositely configured to one another, such that at any given time the drive shaft drives only one of either the lifting mechanism or the air pump respectively. Means are also provided for supplying power to the motor and for reversing operational driving direction of the motor. In a preferred embodiment, the clutch means are one-way clutch means.

REFERENCES:
patent: 1698189 (1929-01-01), Dunbar
patent: 1983444 (1934-12-01), Dry
patent: 2034605 (1936-03-01), Carman
patent: 2458590 (1949-01-01), Harris et al.
patent: 2916880 (1959-12-01), Hann
patent: 4024710 (1977-05-01), Zelle

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