Nail extractor
First Claim
Patent Images
1. A nail extractor comprising:
- a. a drill tube mounted in a forward end of a body configured to be chucked in a drill capable of spinning the tube;
b. the drill tube having a wall that is smooth and cylindrical on both inside and outside surfaces;
c. the inside surface of the tube wall having a diameter slightly larger than a head of a nail to be extracted; and
d. the tube being configured to extract the nail without contacting the nail; and
e. the tube wall being structured to withstand being spun by a drill while manually pressed into wood surrounding the nail;
to withstand drilling around the nail to a depth sufficient to drill a core of wood contained within the tube;
to compress the drilled core between the tube wall and the nail;
to rotate the drilled and compressed core with the tube;
to press the rotating drilled core against the nail with sufficient force to grip the nail and spin the nail loose; and
to extract the spinning nail and the drilled core from a hole drilled around the nail by the tube.
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Accused Products
Abstract
A nail extractor advances a spinning drill tube into wood closely around the head of a nail to be extracted. As the drill tube advances into the wood around the nail, it compresses a drilled core of wood between the nail and the inside of the drilling tube. As this compressed core of drilled wood deepens or lengthens, it engages and rotates the nail, spinning the nail free from the wood in which it has been embedded. The spinning drill tube can then be removed with the nail and the compressed core of drilled wood, without touching the nail with the extractor tool. The nail is then preferably ejected from the drill tube by advancing an ejector pin into the drill tube.
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Citations
13 Claims
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1. A nail extractor comprising:
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a. a drill tube mounted in a forward end of a body configured to be chucked in a drill capable of spinning the tube;
b. the drill tube having a wall that is smooth and cylindrical on both inside and outside surfaces;
c. the inside surface of the tube wall having a diameter slightly larger than a head of a nail to be extracted; and
d. the tube being configured to extract the nail without contacting the nail; and
e. the tube wall being structured to withstand being spun by a drill while manually pressed into wood surrounding the nail;
to withstand drilling around the nail to a depth sufficient to drill a core of wood contained within the tube;
to compress the drilled core between the tube wall and the nail;
to rotate the drilled and compressed core with the tube;
to press the rotating drilled core against the nail with sufficient force to grip the nail and spin the nail loose; and
to extract the spinning nail and the drilled core from a hole drilled around the nail by the tube.- View Dependent Claims (2, 3, 4, 5, 6)
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7. A nail extractor comprising:
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a. a drive rod having one end configured to be chucked in a drill and an opposite end configured to receive and mount an ejector pin;
b. the drive rod having an external thread engaging an internal thread of a sleeve surrounding the drive rod and movable axially of the drive rod as relative rotation occurs between the external and internal threads; and
c. the sleeve mounting a nail extractor tube having an open end. - View Dependent Claims (8, 9, 10, 11, 12, 13)
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Specification