Bolt extractor

Details Bolt extractor Bolt extractor

1977-12-02

1979-02-13

Jones, Jr., James L.

Tools

Wrench, screwdriver, or driver therefor

Stud-removal and implacement

B25B 2700

Patent

active

041389093

ABSTRACT:
A bolt extractor for extracting broken bolt or tap shanks from threaded bores. A length of welding rod is fixedly seated within a bore in a headed stud to project from opposite ends of the stud. The stud shank, which is of a diameter less than that of the tapped bore, is encased with electrical insulating material. The end of the welding rod projecting from the shank is welded to the bolt or tap which is to be extracted by conventional welding equipment connected to the welding rod of the extractor. The broken bolt or tap is then extracted from its bore by applying a wrench to the head of the stud.

REFERENCES:
patent: 2429967 (1947-10-01), Sorensen
patent: 3279047 (1966-10-01), Cumberland
patent: 3439567 (1969-04-01), Denis

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