Gripping screw drive bit

Details Gripping screw drive bit Gripping screw drive bit

1989-05-04

1990-05-15

Schmidt, Frederick R.

Tools

Wrench, screwdriver, or driver therefor

Having work engaging and force exerting portion inserted...

81452, B25B 2308

Patent

active

049247360

ABSTRACT:
A gripping screw drive bit for use with conventional drive sockets which utilize non-magnetic means for gripping and retaining Robertson, TORX, and hexagonal screws and bolts. The gripping bit comprises two mating members. The gripping action is provided by the misalignment of the two members of a composite gripping bit, within a screw head recess, when a minimal amount of torque is exerted upon the composite gripping bit by a drive socket.

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