B - Operations – Transporting – 23 – B
Patent
B - Operations, Transporting
23
B
B23B 51/00 (2006.01) B23B 51/04 (2006.01) B28D 1/14 (2006.01)
Patent
CA 2161034
A drill bit is formed of an insertion end part and carrier part containing drilling cutter members. The insertion end part and the carrier part are joined together by a threaded connection. The two parts are secured by a radially flexible spring washer for preventing an unintended detachment of the two parts.
Geiger Markus
Lauermann Werner
Spangenberg Rolf
Gierczak Eugene J. A.
Hilti - Aktiengesellschaft
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