Implements or apparatus for applying pushing or pulling force – Inclined plane lifter
Patent
1996-09-16
1998-02-10
Watson, Robert C.
Implements or apparatus for applying pushing or pulling force
Inclined plane lifter
E02C 300
Patent
active
057160406
ABSTRACT:
A safety vehicle lift having a unitary base, a lifting assembly, a drive mechanism, a handle, and a ramp. The base is made of flat rigid construction. The lifting assembly has a lower portion secured to the rear part of the base, a support platform above the lower portion, and cross-linkage elements connecting the lower portion and the support platform in a scissors-like configuration. The support base has side walls, a front end with an upturned edge, and a rear end with an upturned wall. The cross-linkage elements have pivotable ends secured to the rearward parts of the lower portion and the support platform. Each cross-linkage element is made of two bars coupled together. The cross-linkage elements also have ends secured within horizontally disposed recesses within the lower portion and the support platform. A drive mechanism is made up of a jackscrew passing through a threaded cross brace. When the jackscrew is turned, the threaded cross brace moves horizontally. The ends of the cross brace are connected with the horizontally shiftable ends of the cross-linkage elements and move along the horizontally disposed recess of the lower portion, and when the jack screw is turned, there is a resulting raising and lowering of the support platform. The cross brace is coupled to guide rollers which roll along the base upon axial movement of the cross brace and which provide more even lift when only one side of the vehicle is being raised. The lift has a handle for turning the jackscrew. The lift is provided with a ramp having side walls and leading from the level of the unitary base to the level of the support base.
REFERENCES:
patent: 3305876 (1967-02-01), Hutt
patent: 3870277 (1975-03-01), West
patent: 4341371 (1982-07-01), Rotella
patent: 4405116 (1983-09-01), Eisenberg
patent: 5503368 (1996-04-01), Torres
Huff Richard L.
Watson Robert C.
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