Bit for removing damaged screws

Details Bit for removing damaged screws Bit for removing damaged screws

2006-02-21

2006-02-21

Thomas, David B. (Department: 3723)

Tools

Wrench, screwdriver, or driver therefor

Stud-removal and implacement

C007S158000

Reexamination Certificate

active

07000501

ABSTRACT:
The present invention relates to a bit for removing damaged screws, the bit of the present invention is able to reach and engage the deep portion of the slot of the damaged screws, while the conventional bit is unable to do so, so as to remove the damaged screw. The bit is designed to have a sharp tip which can engage the deep portion of the slot of the damaged screw, so as to get a good purchase and leverage on the damaged screw to remove it easily.

REFERENCES:
patent: 1863046 (1932-06-01), Githens et al.
patent: 5251516 (1993-10-01), Desaulniers
patent: 6511267 (2003-01-01), Slaughter
patent: 6742416 (2004-06-01), Bergamo
patent: 2003/0136228 (2003-07-01), Liu
patent: 2003/0188604 (2003-10-01), Bergamo
patent: 2004/0000218 (2004-01-01), Bergamo
patent: 2004/0007095 (2004-01-01), Meng
patent: 2004/0237725 (2004-12-01), Kozak
patent: 2004/0250657 (2004-12-01), Chu
patent: 2005/0183548 (2005-08-01), Horobec

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