Jack assembly

Details Jack assembly Jack assembly

1994-11-30

1995-06-06

Watson, Robert C.

Implements or apparatus for applying pushing or pulling force

Hoisting truck

Single throw lever

254 93H, 254124, B66F 300

Patent

active

054215544

ABSTRACT:
A jack includes two cylinder disposed on a base and actuated respectively for elevating vehicles having either lower or nigher base. A slide is slidably engaged on a larger cylinder and secured to a smaller cylinder so as to be moved upward by the smaller cylinder. Two pairs of levers are pivotally coupled between a support and the slide and a pair of links pivotally couple the levers to the larger cylinder. The support is elevated when the slide is moved upward by the smaller cylinder, and the support is further elevated when the larger cylinder is actuated.

REFERENCES:
patent: 3806093 (1974-04-01), Itazu
patent: 5211375 (1993-05-01), Wang
patent: 5364071 (1994-11-01), Lu

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