Implements or apparatus for applying pushing or pulling force – Rack and pinion
Patent
1994-05-13
1995-08-15
Watson, Robert C.
Implements or apparatus for applying pushing or pulling force
Rack and pinion
254DIG6, F16H 2902
Patent
active
054412382
ABSTRACT:
An apparatus for lifting an object for working therebeneath comprising a pair of parallel side plates having apertures through their upper ends and with a pin extending through the apertures. A base comprised of feet is secured with respect to the lower ends of the side plates. The base also has a forwardly extending foot. A sprocket is secured to the pin for rotation about an axis coincident with the axis of the pin with the sprocket having teeth extending radially therefrom. A chain is positioned over the sprocket with the links of the chain sequentially positionable with the teeth of the sprocket through the chain. A lifting plate is positionable in a lower orientation with a lifting surface. The lifting plate has an upwardly extending attachment member. A pedal has an interior end reciprocable between an elevated location and a lowered location. The pedal has an upwardly extending attachment member secured with respect to the second free end of the chain with a locking component.
REFERENCES:
patent: 989744 (1911-04-01), Wilmot
patent: 1008694 (1911-11-01), Bryant
patent: 3964729 (1976-06-01), Harlow
patent: 4976413 (1990-12-01), Massey
patent: 5141204 (1992-08-01), Marosey
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