US Patent: 5,163,345 - Spring-Loaded Magnetic Driver and Method of Assembly Thereof


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US Patent: 5,163,345

Spring-Loaded Magnetic Driver and Method of Assembly Thereof

Patentees:

Jimmy T. Doan (exact or similar names) - Kenosha, WI

Scott W. Predny (exact or similar names) - Kenosha, WI

USPTO Classifications:

76/114, 81/124.1, 81/125

Tool Categories:

Assignees:

Snap-On Tools Corp. - Kenosha, WI

Manufacturer:

Not known to have been produced

Witnesses:

none listed

Patent Dates:
Applied:	Feb. 25, 1992
Granted:	Nov. 17, 1992

Patent Pictures:

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Snap-On Tools Company History

Description:

Emrich & Dithmar - patent attorneys

Abstract

A tool for rotatably driving a fastening member includes a hollow tubular shank having a socket coupled to one end thereof in communication therewith for receiving an associated rotatable fastener member. A helical compression spring is disposed coaxially within the shank, having the outer end thereof affixed to a magnet disposed for magnetic engagement with the fastening member received in the socket, and having an end coil at the other end thereof disposed outside the other end of the shank with an outer diameter greater than the inner diameter of the shank, the other end of the shank being received in a bore in a handle for cooperation therewith to trap the end coil of the spring, therebetween.