Polygonal tool for removal of stripped hex head fasteners

Details Polygonal tool for removal of stripped hex head fasteners Polygonal tool for removal of stripped hex head fasteners

1987-06-10

1988-01-05

Schmidt, Frederick R.

Tools

Wrench, screwdriver, or driver therefor

Stud-removal and implacement

81441, B25B 1350

Patent

active

047167939

ABSTRACT:
A tool for removing threaded fasteners such as screws and/or bolts having hexagonal recessed sockets formed in their heads, with the tool including an elongated broach polygonal in cross section, with a sleeve having a like cross sectional configuration slidably mounted thereon. The sleeve is provided at one end with a protruding insert head that is capable of being projected into countersunk bores so as to have facial contact with a countersunk hex head of a fastener, while the opposite end of the sleeve may be countersunk so as to provide a receptacle for receiving the protruding or exposed hex head of the fastener to be removed.

REFERENCES:
patent: 2121197 (1938-06-01), Jackman
patent: 3288185 (1966-11-01), Clark
patent: 3584526 (1971-06-01), Kleinhenn
patent: 3739825 (1973-06-01), Knox
patent: 3913427 (1975-10-01), Brase

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