Cutter bit insert removal system and method
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United States of America Patent
Stats
-
Sep 20, 2011
Grant Date -
Jun 17, 2010
app pub date -
Dec 11, 2008
filing date -
Dec 11, 2008
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A system and method to remove quickly an insert, especially an insert with a damaged gripping portion, from a base portion of a mining and/or milling drum. The insert can have a threaded portion engageable with the base portion opening. The insert can define an interior bore configured to receive a cutter bit, and an opening configured to receive an apparatus engageable with the insert opening to facilitate the removal of the insert from the base portion. The insert opening may be polygonal or may include at least one planar surface and/or a rounded corner. An apparatus can engage with the polygonal opening and/or a fastener can engage with the shafted fastener. In both cases, the apparatus and/or fastener is rotated with a force to disengage the threaded portion of the insert from the opening of the base portion.
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