US Patent: 5,220,856 - Pivotal Hand Tool and Pivot Joint Therefor


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US Patent: 5,220,856

Pivotal Hand Tool and Pivot Joint Therefor

Patentees:

Daniel M. Eggert (exact or similar names) - Kenosha, WI

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

Bert Krivec (exact or similar names) - Waukesha, WI

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

Christopher D. Thompson (exact or similar names) - Milwaukee, WI

USPTO Classifications:

30/254, 81/416

Tool Categories:

pliers

Assignees:

Snap-On Tools Corp. - Kenosha, WI

Manufacturer:

Not known to have been produced

Witnesses:

none listed

Patent Dates:
Applied:	May 07, 1991
Granted:	Jun. 22, 1993

Patent Pictures:

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Snap-On Tools Company History

Description:

Emrich & Dithmar - patent attorneys

Abstract

A pivotal hand tool includes first and second lever members which intersect and have aligned openings therethrough in which is received a pivot pin having an enlarged head at one end adjacent to one of the lever members and having the other end thereof welded to the other lever member or to a flat washer which bears against the other lever member. The head and the flat washer may be received in complementary recesses in the lever members. A frustoconical washer may be disposed beneath the head of the pivot pin for resiliently urging the lever members together.