Arcuate tip driver

Details Arcuate tip driver Arcuate tip driver

1993-02-26

1994-09-20

Meislin, D. S.

Tools

Wrench, screwdriver, or driver therefor

Having work engaging and force exerting portion inserted...

B25B 1500

Patent

active

053478932

ABSTRACT:
An improved high torque driving tool has a blade with an arcuately convex end surface having a radius of curvature which is greater than the width of the blade and greater than the radius of curvature of the driving slot in an associated fastener. The blade may be provided with a conical tip protects axially from the end surface and has a base diameter substantially equal to the thickness of the blade at the end surface, the tip being receivable in a conical recess and the driving slot of the associated fastener.

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patent: 4977800 (1990-12-01), Colvin
patent: 4998454 (1991-03-01), Chaconas et al.

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