Drill chuck lock apparatus

Details Drill chuck lock apparatus Drill chuck lock apparatus

1990-06-04

1991-07-23

Briggs, William

Cutting by use of rotating axially moving tool

Tool-support

With tool-retaining means

279 97, B23B 3108

Patent

active

050339206

ABSTRACT:
An apparatus to selectively secure a drill chuck, wherein the drill bit is formed with a rear and forward hexagonal portion coaxially aligned with a circumferential groove positioned between the forward and rear sections, whereupon a hexagonal bore formed within an associated drill chuck receives the forward and rear sections. A lock pin is slidably mounted through the drill chuck orthogonally relative to an axis of the drill chuck and spaced above an axis of the drill chuck to permit engagement of the drill bit member within the drill chuck when a lock pin is in a forward position and disengagement of the groove of the drill bit in a lock pin is in a retracted second position.

REFERENCES:
patent: 771626 (1904-10-01), Gilman
patent: 1182934 (1916-05-01), Scott
patent: 1833236 (1931-11-01), Smith
patent: 2974965 (1961-03-01), Welles, Jr.
patent: 2985899 (1961-05-01), Elliott
patent: 3091044 (1963-05-01), Penote et al.
patent: 3726533 (1973-04-01), Lafferty, Sr.
patent: 4284284 (1981-08-01), Sides
patent: 4809995 (1989-03-01), Ramunas

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