Method and apparatus for drilling holes

Details Method and apparatus for drilling holes Method and apparatus for drilling holes

1992-01-09

1993-04-20

Howell, Daniel W.

Cutting by use of rotating axially moving tool

Processes

Bit detachable

408 14, 408 16, B23B 3500

Patent

active

052036502

ABSTRACT:
A method and apparatus is disclosed for drilling holes, each having a substantially similar and desired depth. Apparatus 10 includes a limit switch 42 which deactivates motors 20 and 33 and light 34 when the drill motor's travel has reached a predetermined point and correspondingly the drill bit has reached a desired depth.

REFERENCES:
patent: 2356438 (1944-08-01), Wilson
patent: 2747154 (1956-05-01), Abrams
patent: 2909082 (1959-10-01), Booth
patent: 3516327 (1970-06-01), Wilson
patent: 3724964 (1973-04-01), Needham, Jr.
patent: 3837757 (1974-09-01), Levine
patent: 4753556 (1988-06-01), Solko
patent: 4911587 (1990-03-01), Stych

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