Adjustable drill gauge

Details Adjustable drill gauge Adjustable drill gauge

1986-10-01

1987-12-01

Bilinsky, Z. R.

Cutting by use of rotating axially moving tool

Tool or tool with support

With work-engaging structure detachable from cutting edge

33169B, 33173, 408226, 408241S, B23B 5100

Patent

active

047100753

ABSTRACT:
A drill stop apparatus for use with an elongated drill bit is provided. The drill bit has a drilling end that is used to drill a hole of a specified, predetermined depth. The bit also has a plurality of circumferentially extending, axially spaced grooves formed on its outer surface. The drill stop includes a body having a first end and formed to include an axially extending bore that is sized to receive the drill bit to permit the bit to be moved axially within the body. The body also has a cavity that extends substantially perpendicularly through the bore. A plunger is provided that is sized to be received in the cavity for releasably engaging one of the plurality of grooves in the drill bit to lock the drill bit against axial movement within the body member such that a specified length of the drill bit extends beyond the first end of the body member. This specified length of the drill bit defines a specified operable drilling length between the first end of the stop apparatus and the drilling end of the drill bit.

REFERENCES:
patent: 2833168 (1958-05-01), Nelson
patent: 4039266 (1977-08-01), O'Connell
patent: 4341206 (1982-07-01), Perrett et al.
patent: 4354779 (1982-10-01), Vaughan

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