Tool

Details Tool Tool

1988-10-11

1990-05-01

Schmidt, Frederick R.

Tools

Including tool driving by impact delivering component or...

81466, 173128, 408226, B25B 1900

Patent

active

049208373

ABSTRACT:
A tool such as a drill bit which has a generally cylindrical shank for insertion in a tool receiver or holder of a rotary percussive machine or other rotary machine, such as a drilling machine. The shank has a curved surface portion and a flat surface portion of rectangular configuration, the flat surface portion lying between the ends of the shank. When the shank is inserted in a tool receiver of a rotary percussive machine (not shown), driving elements thereof engage and act on the flat surface to provide driving torque to the tool, which is thereby rotated.

REFERENCES:
patent: 2047125 (1936-07-01), Gartin
patent: 2677562 (1954-05-01), Coffman et al.
patent: 3289290 (1966-12-01), Sander
patent: 3637225 (1972-01-01), Schmuck
patent: 4232985 (1980-11-01), Nielson

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