Screw extractor

Details Screw extractor Screw extractor

A - Human Necessities

61

M

128/111, 81/36

A61M 25/00 (2006.01) A61B 17/88 (2006.01) B25B 13/44 (2006.01) B25B 27/18 (2006.01)

Patent

CA 1173716

ABSTRACT OF THE DISCLOSURE A tool for use in removing broken or inoperative screw fasteners. The tool has a tubular-shaped extension at one end with cutting teeth projecting axially from the extension. The teeth can cut around a fastener when the tool is rotated in one direction to provide a stub end on the fastener over which the extension fits. The extension is then tightened on the stub end and teeth, extending radially inwardly from the extension, tightly grip the stub end so that the fastener can be unscrewed on reverse rotation of the tool.

397438

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