Implements or apparatus for applying pushing or pulling force – Wedge
Patent
1994-03-02
1995-09-12
Watson, Robert C.
Implements or apparatus for applying pushing or pulling force
Wedge
B25B 108
Patent
active
054491487
ABSTRACT:
A levelling apparatus for use between a structural frame member defining a first plane and a supporting member defining a second plane, vertically adjustable between raised and lowered positions, comprising a base section having first and second inclined surfaces, a top section having first and second inclined surfaces, and first and second pairs of half wedge members disposed intermediate the base and top section, the half wedge members having inclined faces mating with the complementary surfaces formed on the base and top section. A threaded rod is disposed longitudinally within the levelling device, passing through the pairs of half wedges members and brackets engaging the back sides of the half wedge members, with nuts threadingly engaging each end of the threaded rod. Rotation of one or both nuts causes longitudinal translation of the half wedge members and resulting vertical adjustment of the levelling device. The half wedge members are pivotable about lateral pivot pins, so that substantially constant contact is maintained between the top and base section when the base section is tilted due to an inclined support surface. Braces secured to the opposite ends of the pivot pins cooperate with the brackets to prevent lateral displacement of the components. The top section is angularly adjustable relative to the base section to compensate for an uneven support surface.
REFERENCES:
patent: 3078072 (1963-02-01), Golden
patent: 4208045 (1980-06-01), Rowe et al.
patent: 4824303 (1989-04-01), Dinger
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