Patent ID: 6644755
Filing Date: 2003-11-11
Classification: B28D,E21C

Abstract:
In a fastening for a round shank chisel on a road scraper device, wherein the round shank chisel has a chisel head and a chisel shank, the chisel head rests with a contact surface on a wear-protection disk which rests on a chisel holder and is supported on the chisel holder, and the chisel shank is inserted into a receiver bore of the chisel holder, the improvement comprising:the chisel holder (20) having an inclined support flank (26) extending around the receiver bore (21) and a support section (25) angled with respect to the support flank (26); the wear-protection disk (19) having an outer edge including a circumferential bent portion (19.5); the wear-protection disk (19) having a centering flank (19.3) facing the receiver bore (21) and having a contact face (19.2), the centering flank (19.3) angled with respect to the contact face (19.2) and forming a circumferential groove (19.6); and in an assembled state of the round shank chisel (10) within the receiver bore (21), the support flank (26) contacting the centering flank (19.3) and the support section (25) contacting the contact face (19.2).