Jack for heavy objects

Details Jack for heavy objects Jack for heavy objects

2007-12-04

2007-12-04

Wilson, Lee D. (Department: 3723)

Implements or apparatus for applying pushing or pulling force

Hoisting truck

Single throw lever

C254S00200C, C254S00300C

Reexamination Certificate

active

10976058

ABSTRACT:
A transmission Jack and apparatus that can raise and lower heavy objects between a floor surface and a higher elevation is disclosed. The transmission jack and apparatus includes a bottom frame mounted on a plurality of wheels. Pivotally attached to the bottom frame is a pair of hinge elements that support a plurality of support bars, with the support bars always remaining parallel to a ground surface. The support bars can be raised or lowered through a pair of metal cylinders and internal rods which are hooked up to a hydraulic pump. A handle attached to the hydraulic pump allows an individual to raise or lower the plurality of support bars by pumping an oil-based hydraulic fluid into the pair of metal cylinders, thereby pushing out the Internal rods, which then engage the hinge elements.

REFERENCES:
patent: 3844421 (1974-10-01), Nielsen
patent: 3958793 (1976-05-01), Garate
patent: 4724930 (1988-02-01), VanLierop
patent: 5372353 (1994-12-01), West
patent: 6338470 (2002-01-01), Steely et al.
patent: 6343556 (2002-02-01), Lanphear
patent: 6601430 (2003-08-01), McClellan
patent: 6779780 (2004-08-01), Arzouman

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