Clamp assembly for removing pins from a concrete form

Details Clamp assembly for removing pins from a concrete form Clamp assembly for removing pins from a concrete form

1990-10-10

1991-11-19

Watson, Robert C.

Implements or apparatus for applying pushing or pulling force

Nail extractor type

B25C 1100

Patent

active

050659847

ABSTRACT:
An apparatus for pullingly removing pins from a concrete form using a lifting mechanism. The apparatus comprises a clamp assembly having a first and a second jaw connected thereto. The clamp assembly is movable to an opened position wherein the first and the second jaws are spaced a distance apart and the clamp assembly is movable to a closed position wherein the jaws are positioned in clamping engagement with the pin. The clamp assembly is moved to the opened position and the jaws are positioned generally about the pin to be removed. The clamp assembly is connected to the lifting mechnism. The lifting mechanism is moved in an upwardly direction thereby causing the clamp assembly to be moved to the closed position for moving the first and the second jaws into clamping engagement with the pin. The lifting mechanism then is further moved in the upwardly direction for pullingly removing the pin.

REFERENCES:
patent: 1014068 (1912-01-01), Kostenbader
patent: 1870133 (1983-08-01), Myers
patent: 3201167 (1965-08-01), Wampler
patent: 3208789 (1965-09-01), Barry
patent: 3336001 (1967-08-01), Barton
patent: 3837699 (1974-09-01), Anderson et al.
patent: 4078766 (1978-03-01), Saurwein
patent: 4530536 (1985-07-01), Williams
patent: 4904009 (1990-02-01), Kozlinski

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