Hydraulic jack

Details Hydraulic jack Hydraulic jack

1978-09-29

1980-07-01

Watson, Robert C.

Implements or apparatus for applying pushing or pulling force

Hoisting truck

Single throw lever

B66F 504

Patent

active

042103142

ABSTRACT:
A hydraulic jack of the type typically employed for automotive repair work is equipped with a frame supported on wheels, a hydraulic unit for powering the jack, and an elevator mechanism for raising a lift plate in response to a ram actuated by the hydraulic unit. The hydraulic unit is supported in the frame without bolts or other fastening devices and thus is easily removable for repair or replacement. The elevator mechanism includes pivotable elevator arms for raising a roller which travels along an S-shaped lever. The lever supports the lift plate at one end and is pivoted in the frame at its other end.

REFERENCES:
patent: 2528329 (1950-10-01), Bauer
patent: 2575160 (1951-11-01), Clarke
patent: 2814394 (1957-11-01), Witcher
patent: 3362168 (1968-01-01), Dotlich
patent: 4131263 (1978-12-01), John

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