Drill for hand-held drilling devices

Details Drill for hand-held drilling devices Drill for hand-held drilling devices

1985-04-29

1986-01-21

Briggs, William R.

Cutting by use of rotating axially moving tool

Tool or tool with support

Including detailed shank

175414, 279 19, 279 195, B23B 5100, B23B 3108, E21B 1036

Patent

active

045654727

ABSTRACT:
A drill is secured in percussion drilling machines and in tool holders of hammer drills by locking elements. The locking elements fit into axially extending grooves formed in the axially extending circumferential surface of the shank of the drill. Webs located intermediate the ends of the grooves divide the grooves into axially extending groove sections with the locking elements fitting into the groove sections. The outer surfaces of the webs are located in the circumferential surface of the shank and serve to support the jaws of the tool holder in the correct position.

REFERENCES:
patent: 2047125 (1936-07-01), Gartin
patent: 2853973 (1958-09-01), Fish
patent: 3157070 (1964-11-01), Heidrich
patent: 3202433 (1965-08-01), Davis
patent: 3811694 (1974-05-01), Dahlman et al.

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