Tool bit chucking shank

Details Tool bit chucking shank Tool bit chucking shank

1994-03-22

1995-06-06

Bishop, Steven C.

Cutting by use of rotating axially moving tool

Tool or tool with support

Including detailed shank

279 193, 279 75, 408239R, B23B 5102

Patent

active

054216826

ABSTRACT:
A tool bit, to be inserted into a tool bit chuck of a hand-held tool used for at least one of chiseling, drilling and percussion drilling, has an axially extending chucking shank (10) with a polygon-like cross-section having chamfered corners (13, 14, 15, 16). The chucking shank has two profiled faces disposed diametrically opposite one another and each has a locking groove (19) closed at its axially spaced ends. Two other diametrically opposite profiled faces form entrainment faces (12) with rotary entrainment grooves (11) each having entrainment faces (17, 18) for transmitting torque to the tool bit.

REFERENCES:
patent: 4943192 (1990-07-01), Lafforgue et al.
patent: 5028057 (1991-07-01), Wanner
patent: 5076371 (1991-12-01), Obermeier et al.
patent: 5174698 (1992-12-01), Obermeier
patent: 5286145 (1994-02-01), Kleine
patent: 5320459 (1994-06-01), Kleine
patent: 5324145 (1994-06-01), Kleine
patent: 5346340 (1994-09-01), Runge

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