Patent ID: 6877684

Claim:
An improvement on a grinding tool, comprising a housing includes an upper body and a lower body releaseably joined to a lower end of the upper body; a lever having a sector-shaped lower end formed with gear teeth; the lever being pivoted to the upper body at an intermediate portion thereof; an upper end of the lever being biased away from an upper end of the upper body by a first elastic element connected to both the lever and the upper body; a one-way mechanism received in angularly displaceable manner in the upper body of the housing; the one-way member having an actuating gear abutting the gear teeth of the lever; the one-way mechanism having a one-way bearing connected to an annular inner side of the actuating gear; the one-way mechanism having a tube securely connected to an annular inner side of the one-way bearing; the actuating gear being engaged with the one-way bearing for angular displacement therewith in a first direction responsive to the lever being pushed close to the upper end of the upper body; the actuating gear being disengaged from the one-way bearing for angular displacement relative thereto in a second direction opposing the first direction responsive to the lever being reversibly displaced from the pushed position by means of the first elastic element; and a grinding mechanism including an outer grinding wheel secured in a lower end of the lower body of the housing, and an inner grinding wheel received in angularly displaceable manner in the outer grinding wheel; the inner grinding wheel being connected to a lower end of the tube so as to turn relative to the outer grinding wheel to grind contents of the lower body therebetween when the housing is held substantially upright with one hand, and the lever is pushed close to the upper end of the upper body and released repeatedly.