Guide for angled and curved drilling

Details Guide for angled and curved drilling Guide for angled and curved drilling

1993-12-23

1995-03-07

Howell, Daniel W.

Cutting by use of rotating axially moving tool

Means to drive tool

Universal or flexible drive connection to rotate tool

408 72B, 408 83, B23B 4514

Patent

active

053951883

ABSTRACT:
A drilling tool for drilling a curved hole. The tool includes a curved guide tube for positioning the tube in drilling position against a wall and a flexible shaft extending through the guide tube having a drill bit on the end thereof adjacent the outlet end of the tube and a shank on the opposite end engaged in a drill tool chuck. Operation of the drill tool rotates the drill bit and the tube guides and directs the bit to drill a curved or angled hole. The drill bit can be a spade bit, a spiral bit or a ball mill.

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patent: 3006223 (1961-10-01), Broussard
patent: 3016073 (1962-01-01), Broussard et al.
patent: 3365987 (1968-01-01), Heller et al.
patent: 3617143 (1971-11-01), McKee
patent: 4769118 (1988-09-01), Johns
patent: 5017057 (1991-05-01), Kryger

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