Method of making a tool for extracting a broken screw

Details Method of making a tool for extracting a broken screw Method of making a tool for extracting a broken screw

2007-07-10

2007-07-10

Peterson, Kenneth E. (Department: 3724)

Metal tools and implements, making

Blank or process

Hand tool

C081S053200, C606S104000

Reexamination Certificate

active

10171899

ABSTRACT:
The method of making a tool for removal of broken screws from a base material, including the material of the bone of a medical patient. One end of the tool has an open bore with interior, left-hand tapered screw threads formed thereon by compressing the tool to form the taper after the threads are formed and presented in a cylindrical shape. The other end of the tool is solid for accommodating a driving tool which rotates the tool in the removal of the broken screw.

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