Patent ID: 7713112
Filing Date: 2010-05-11
Classification: B24D

Abstract:
1. A precision ceramic whetstone ( 3 ) comprising a ceramic stick ( 30 ) with high straightness accuracy having a plastic nut ( 31 ) at a first end, and a plastic handle ( 32 ) at a second end characterized in: a first bump ( 311 ) is centrally projected out from a center area of the bottom of the plastic nut ( 31 ), a fixed bump ( 321 ) is centrally projected out from a center area of the bottom of the handle ( 32 ); a stop plate ( 322 ) is disposed on a first end of the handle ( 32 ) for shielding the area between thumb and index finger of a user, an axial hole ( 301 ) formed through the stick ( 30 ) having first and second ends sealed by the bump ( 311 ) of the plastic nut ( 31 ) and the fixed bump ( 321 ) of the handle ( 32 ).