Tool for enlarging hole

Details Tool for enlarging hole Tool for enlarging hole

1998-01-06

2000-04-11

Briggs, William

Cutting by use of rotating axially moving tool

Tool or tool with support

With work-engaging structure detachable from cutting edge

408 82, 408214, 408241R, B23B 5100

Patent

active

060481412

ABSTRACT:
A tool for enlarging the size of an existing bore to a selected enlarged size. The tool has a drill sized to define the enlarged bore, and a guide having a cylindrical body sized so that the guide can be rotated in the existing bore. The guide and drill including cooperating structures for releasably interconnecting the guide and the drill with the guide and drill coaxially aligned whereby, with the guide releasable secured to the drill, the guide can be located within the original hole to guide the cutting action of the drill as it enlarges the original hole.

REFERENCES:
patent: 1004902 (1911-10-01), Potter
patent: 2226226 (1940-12-01), Hedin
patent: 2374552 (1945-04-01), Marini
patent: 4289432 (1981-09-01), Elkins et al.
patent: 4512691 (1985-04-01), Dicke
patent: 4579486 (1986-04-01), Damico
patent: 4749315 (1988-06-01), Mills
patent: 4968189 (1990-11-01), Pidgeon
patent: 5366326 (1994-11-01), Converse
patent: 5413437 (1995-05-01), Bristow
patent: 5695304 (1997-12-01), Ebert
patent: 5743682 (1998-04-01), Chaney, Sr.

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