Drill rig and method of use for forming holes in drill resistant

Details Drill rig and method of use for forming holes in drill resistant Drill rig and method of use for forming holes in drill resistant

1998-05-29

1999-11-16

Howell, Daniel W.

Cutting by use of rotating axially moving tool

Processes

Bit detachable

408 76, 408101, 408111, 408137, B23B 3500, B23B 4100

Patent

active

059845945

ABSTRACT:
A drill rig for drilling access holes in drill resistant materials, such as those used to construct safes or other secure containers. The drill rig includes a drill bit holding and advancing mechanism having enclosed threaded members for allowing incremental, even pressure to be applied during a drilling operation while preventing burrs and chips from becoming lodged within the threads. A sliding connection is provided between stationary frame structure of the rig and the drill bit holding and advancing mechanism. The connection includes a spring loaded, quick-release mechanism for allowing quick detachment of the drill bit holding and advancing mechanism from the frame structure at the end of a drilling operation or as needed to replace the drill bit.

REFERENCES:
patent: 634165 (1899-10-01), Croneau
patent: 676043 (1901-06-01), Lincoln
patent: 3068725 (1962-12-01), Ver Nooy
patent: 3765787 (1973-10-01), Hart et al.
patent: 4533284 (1985-08-01), Agius et al.
patent: 4627773 (1986-12-01), Ehnert
patent: 4662201 (1987-05-01), Phillips
patent: 4865493 (1989-09-01), Miller
patent: 4978257 (1990-12-01), Nowman
patent: 5282704 (1994-02-01), Screen
patent: 5462392 (1995-10-01), Hardwick
The National Safeman, Alternatives to the Magnum 457, Article, Summer 1993 (2 pgs.).
Lockmasters, 1990 Tool Catalog, p. 30.
Lockmasters, 1997 Tool Catalog, vol. 3, Catalog No. TC 9703, pp. 40-42.

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