Hole saw guide

Details Hole saw guide Hole saw guide

1996-11-15

1998-04-28

Howell, Daniel W.

Cutting by use of rotating axially moving tool

With work-engaging structure other than tool or tool-support

Frictionally engaging sides of opening in work

408204, B23B 4100

Patent

active

057436827

ABSTRACT:
A hole tool guide assembly (10) for use with a hole saw (20) includes a conically shaped core member (12) with a central longitudinal aperture (24) and an offset parallel aperture (32) to receive a pilot of a hole saw. A coil spring (18) biases the member (12)--against a work piece within an existing hole (62) to resize and reposition a new hole (67) through the work piece (60).

REFERENCES:
patent: 2633040 (1953-03-01), Schlage
patent: 3907452 (1975-09-01), Tripp
patent: 4579486 (1986-04-01), Damico
patent: 4749315 (1988-06-01), Mills
patent: 4759666 (1988-07-01), Grab
patent: 4968189 (1990-11-01), Pidgeon
patent: 5366326 (1994-11-01), Converse
patent: 5413437 (1995-05-01), Bristow

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