US Patent: 5,347,893 - Arcuate Tip Driver


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US Patent: 5,347,893

Arcuate Tip Driver

Patentees:

Frank Mikic (exact or similar names) - Kenosha, WI

Jeffrey H. Hoff (exact or similar names) - Kenosha, WI

USPTO Classifications:

81/436

Tool Categories:

Assignees:

Snap-On, Inc. - Kenosha, WI

Manufacturer:

Not known to have been produced

Witnesses:

none listed

Patent Dates:
Applied:	Feb. 26, 1993
Granted:	Sep. 20, 1994

Patent Pictures:

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Snap-On Tools Company History

Description:

Emrich & Dithmar - patent attorneys

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.