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US 2010/0148568 A1Published application
Cutter bit insert removal system and method
AssigneeKeystone Engineering & Manufacturing Corporation
InventorWinchester E. Latham
Life of this patent
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AssigneeKeystone Engineering & Manufacturing Corporation
InventorWinchester E. Latham
Estimating the term…
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 are provided. 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.
An apparatus for use on a portion of a milling or mining drum, adapted to be rotated in a cutting direction about a cylindrical axis defined by said drum, the apparatus comprising:
A system for removing an insert from a base portion mounted on a portion of a milling or mining drum, the base portion defining a tapped opening, and the insert having a first and second end and defining an interior bore configured to receive at least one cutter bit, a threaded portion threadably engageable with the tapped opening of the base portion, and an opening having a first end contacting the interior bore and a second end disposed proximate the second end of the insert, the system comprising an apparatus configured to engage with said opening to facilitate the removal of the insert from the base portion when the insert and the base portion are threadably engaged.
A method of removing an insert from a base portion mounted on a portion of a drum for use with a mining or milling machine, the base portion having a tapped opening, the method comprising the steps of:
Dependencies are inferred from the claim text.