Hex wrench

Details Hex wrench Hex wrench

1999-01-01

2000-03-07

Smith, James G.

Tools

Wrench, screwdriver, or driver therefor

Having work engaging and force exerting portion inserted...

B25B 1348

Patent

active

060325569

ABSTRACT:
A hex wrench is provided for driving a screw having a screw head with a counterbore defined therein. The hex wrench is L-shaped and includes a longer section and a shorter section. The longer section includes a neck defined therein, thereby forming a distal driving end with an end face. The neck includes an end edge that faces the driving end. A distance between the end edge of the neck and the end face of the driving end is smaller than a radius of the screw to be driven. The end edge of the neck bears against the screw head when the driving end is received in the counterbore of the screw head in a slanted manner for driving the screw. A portion of the longer section above the neck is engaged with the counterbore of the screw head when the driving end is received in the counterbore in an upright manner.

REFERENCES:
patent: 4246811 (1981-01-01), Bondhus et al.
patent: 4367664 (1983-01-01), Ekshtut
patent: 5140877 (1992-08-01), Sloan
patent: 5251521 (1993-10-01), Burda et al.
patent: 5370021 (1994-12-01), Shigmatsu
patent: 5408905 (1995-04-01), Mikic et al.

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