发明名称 Round-shank bit for a coal cutting machine
摘要 A round-shank bit for a coal cutting machine or the like, having a bit head and a bit shank, wherein the bit head has a bit tip, maintained by a base element in a receptacle of the bit head. Starting at the base element, the bit tip tapers in a direction toward the free end of the bit tip, wherein the base element forms a maximum diameter of the bit tip, and wherein the bit tip has recesses on its outer contour. In order to assure good rotational behavior over the entire length of the operating time, the base element has the recesses on an outer circumference forming the maximum diameter.
申请公布号 US6199956(B1) 申请公布日期 2001.03.13
申请号 US19990238999 申请日期 1999.01.27
申请人 BETEK BERGBAU- UND HARTMETALLTECHNIK KARL-HEINZ-SIMON GMBH & CO. KG 发明人 KAMMERER KARL
分类号 B28D1/18;E21C35/18;E21C35/183;(IPC1-7):E21C35/18 主分类号 B28D1/18
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