Implements or apparatus for applying pushing or pulling force – Rocking supports
Patent
1979-01-25
1980-04-01
Watson, Robert C.
Implements or apparatus for applying pushing or pulling force
Rocking supports
B66F 722
Patent
active
041958187
ABSTRACT:
The invention comprises a jacking device including a base member adapted in part to be placed in contact with a supporting surface; a ramp member connected at one of its ends to the base member, the ramp member being provided at its upper surface with guide means, preferably in the form of a slot, integral with the upper surface and extending longitudinally thereof. At least one intermediate supporting member is provided to extend between the ramp member and the base member, supporting the ramp member at an acute angle relative to the base member. Positioned for constrained sliding engagement within the slot or guide means is a load contacting member, the movement of which longitudinally of the device, is limited by the slot parameters. Finally, the device is completed by a transverse member attached to the under-surface of the base member at a point approximately one-third of the length of the base member from its attachment point with the ramp member. This additional member is substantially V-shaped, the apex being the ground engaging portion. The purpose of this member being to provide a fulcrum about which the device, when in use, may pivot.
REFERENCES:
patent: 2565805 (1951-08-01), Farkas
patent: 3220699 (1965-11-01), Falk
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