Lever-action lift jack

Details Lever-action lift jack Lever-action lift jack

1977-08-18

1978-09-12

Watson, Robert C.

Implements or apparatus for applying pushing or pulling force

Single throw lever

Special engaging feature

B66F 722

Patent

active

041132351

ABSTRACT:
A lever-action jack has a cross-support and a pair of lever assemblies at opposite ends thereof. Each lever assembly is laterally outside the vehicle supported for lateral stability and positions the cross-support between the ends of and in spaced relation to a base portion defining a force arm that is turned in a lever action about a fulcrum at one end of the base portion, preferably by a handle releasably secured to one end of one of the base portions, to raise and lower the cross-support. A stand portion is connected between the base portion and cross-support and locates the cross-support between the ends of the base portion so there is a length of the base portion on each side of the cross-support to counteract loading forces on the cross-support that tend to tip the jack forwardly or rearwardly.

REFERENCES:
patent: 2555471 (1951-06-01), Chambers
patent: 2782947 (1957-02-01), Linsel
patent: 3667728 (1972-06-01), Garelich
patent: 3761058 (1973-09-01), Stone et al.

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