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US Patent: 6,378,407
Multiblade Screwdriver
Patentee:
Emerson Purkapile - Scottsdale, AZ

USPTO Classifications:
81/177.4, 81/490

Tool Categories:
screwdrivers : screwdriver blades

Assignees:
Wilton Tool Co., LLC - Palatine, IL

Manufacturer:
Not known to have been produced

Witnesses:
none listed

Patent Dates:
Applied: Jun. 30, 2000
Granted: Apr. 30, 2002

Patent Pictures:
USPTO pdf tiff
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Description:
Fitch, Even, Tabin & Flannery - patent attorneys

Abstract

A hand-held screwdriver assembly having interchangeable blades which are held within a hollow handle and are available to be selected and moved through a cross-slot in a cap assembly on the handle to a stop position, and then to be secured in a chuck for use. Rotation of the cap assembly is prevented when the blade is secured in the chuck, thus precluding the introduction of a second blade into the cross-slot.

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