B - Operations – Transporting – 25 – B
Patent
B - Operations, Transporting
25
B
B25B 21/00 (2006.01) B25B 13/02 (2006.01) B25B 13/06 (2006.01) B25B 13/50 (2006.01)
Patent
CA 2252171
A device is disclosed for removing a nut frozen in place regardless of the degree to which the corners of the nut have been rounded by a prior attempt to remove such nut by an ordinary wrench. The device is formed with an opening, which is sized to receive the nut and formed with a plurality of teeth preferably arranged such that a leading or cutting edge of each tooth engages approximately with a midpoint of a flat of the nut. The front and rear faces of each tooth form an angle of less than 90. degree. and a gullet between teeth, which is defined by a rear face of one tooth and a front face of a next adjacent tooth, is sized to freely receive the corner(s) between the flats with which the leading edges of an adjacent pair of teeth engage. The gullet is shaped and sized to permit the formation of a chip upon penetration of a leading edge into a flat of a nut, which is operable to lock the nut for rotation with the device.
Finlayson & Singlehurst
Siwy Charles C.
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