Drill head

Details Drill head Drill head

1987-12-14

1989-02-07

Bilinsky, Z. R.

Cutting by use of rotating axially moving tool

With work-engaging structure other than tool or tool-support

Movable relative to tool along tool-axis

408202, 408241S, B23B 4514

Patent

active

048027987

ABSTRACT:
A drill head which enhances the accuracy of a drill, is attachable thereto and which includes an inner cylinder which is retractable into an outer cylinder and means to adjust such retractable distance, which distance is determinative of the exact depth of the hole to be drilled.

REFERENCES:
patent: 2868044 (1959-01-01), Chaffee et al.
patent: 3241405 (1966-03-01), Davis

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