The invention relates to a chisel (10) having a chisel head (11) and a chisel shaft (17), wherein near its end facing away from the chisel head the chisel shaft has a threaded portion having a thread (19), wherein the chisel head holds a chisel tip (20) made of a hard material, and wherein near the side facing the chisel shaft the chisel head is provided with a supporting surface (15). Especially when superhard hard materials are used for the chisel tip, a load-optimized chisel design is obtained by a domed supporting surface (15).
申请公布号
EP3049620(A2)
申请公布日期
2016.08.03
申请号
EP20140757943
申请日期
2014.09.01
申请人
BETEK GMBH & CO. KG;WIRTGEN GMBH
发明人
LEHNERT, THOMAS;BUHR, KARSTEN;BARIMANI, CYRUS;HÄHN, GÜNTER;FRIEDERICHS, HEIKO;KAMMERER, KARL;ROTH, MARKUS