Fixture for a round shank chisel having a wearing protection disk
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United States of America Patent
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-
Nov 11, 2003
Grant Date -
N/A
app pub date -
Jun 8, 2001
filing date -
Dec 10, 1998
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A fixture for attaching a round shank chisel to a road milling machine or the like. The round shank chisel has a chisel head and a chisel shank. With a bearing surface the chisel head rests upon a wearing protection disk which in turn rests on and is supported by a chisel holder. The chisel shank is accommodated by a location bore of the chisel holder. This invention prevents dirt from penetrating the area of the location bore of such a fixture and at the same time ensures that the free movability of the round shank chisel is not impaired. Thus, the chisel holder has a circumferential projection or a circumferential depression which extends along the location bore. Also, the wearing protection disk has a circumferential receiving groove or a circumferential shoulder and the projection or the depression of the chisel holder engages with the receiving groove or the depression of the wearing protection disk when the round shank chisel is assembled.
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