Implements or apparatus for applying pushing or pulling force – Single throw lever – Special engaging feature
Patent
1998-01-08
1999-02-02
Watson, Robert C.
Implements or apparatus for applying pushing or pulling force
Single throw lever
Special engaging feature
254 25, 254 26R, 7143, 7146, 7147, B66F 1100
Patent
active
058654259
ABSTRACT:
A manhole cover extractor for loosening and lifting a cover by using rods in slots in the top of the cover or drain holes in the cover, the extractor having an elongated head with one end shaped as a sledge hammer and the other end shaped as a tapered, curved arm having a rounded bottom with a pointed pry tip. The curvature of the arm is along a tangent to the bottom center of the arm to position the pry tip under a rod or in a drain hole to engage the bottom of the cover. Serration's on the top of the arm to seat a rod in the slot or a drain hole. A hole in the center of the head receives a handle for swinging the sledge hammer to loosen the cover and to act as a lever for the pry tip when the handle is lifted and pulled.
REFERENCES:
patent: 097715 (1869-12-01), Smith
patent: 418541 (1889-12-01), Stewart
patent: 459643 (1891-09-01), Montgomery
patent: 4476597 (1984-10-01), Gobbi
patent: 4978103 (1990-12-01), Moisen
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