Title:
A FRUSTUM CUTTING BIT ARRANGEMENT
Document Type and Number:
WIPO Patent Application WO1999006191
Kind Code:
A3
Abstract:
A frustum cutting bit arrangement, comprising a shank portion (3) for mounting in, and to be retained by, a rotary cutting tool body, the shank portion (3) having an axis, an inner axial end, and an outer axial end. A head portion (5) has an axis coincident with the shank portion axis, a front axial end, and a rear axial end, the rear end coupled to the shank portion outer end, and the front end having a conical cavity (23) therein diminishing in diameter from the front end toward the rear end.
Inventors:
BRIESE LEONARD ARDEN (US)
Application Number:
PCT/US1998/015747
Publication Date:
April 22, 1999
Filing Date:
July 30, 1998
Export Citation:
Assignee:
BRIESE LEONARD A (US)
International Classes:
E21C35/183; E21C35/187; E21C35/18; (IPC1-7): E21B10/36
Foreign References:
| US4109737A | 1978-08-29 | |||
| US4416489A | 1983-11-22 | |||
| US5456522A | 1995-10-10 |
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