Bit apparatus
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Oct 28, 2003
Grant Date -
Nov 22, 2001
app pub date -
Apr 11, 2001
filing date -
Apr 12, 2000
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A bit apparatus in which a cutter member having cutting teeth is axially supported on a shaft for rotation about the shaft, and a bearing mechanism is interposed between the cutter member and the shaft. The bearing mechanism includes at least a radial bearing for bearing a radially directed load and a thrust bearing for bearing an axially directed load. The radial bearing has a shaft-side split bearing member and a cutter-side split bearing member that are opposed to or in sliding contact with each other and capable of rotating relative to each other.
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