Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
June 16, 2015
Patent Application Number
14140121
Date Filed
December 24, 2013
Patent Citations Received
Patent Primary Examiner
Patent abstract
A support pole has upper, lower and intermediate extents. A motor with a drive shaft is coupled to the lower extent of the support pole. A grinding component is coupled to the drive shaft. The grinding component includes an annular plate below, a cylindrical sleeve above and a hemispherical dome there between. The sleeve is adapted to receive the drive shaft. The annular plate has a downwardly facing abrasive surface. The dome ventilation apertures. A bushing is coupled to the drive shaft for axial securement of the dome and abrasive surface to the motor.
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