Abstract: A pepper grinder has a rotating cap, a body, a turning rod extending through the cap and the body, a grinding unit secured by a base, and a gear unit to rotate the turning rod to rotate a grinding wheel in the grinding unit when the rotatable cap is rotated manually clockwise. But counterclockwise rotating of the cap cannot rotate the turning rod to rotate the grinding wheel to prevent counterclockwise rotation of the grinding wheel.

Abstract: An anti-slip structure for cups comprising an annular groove in the cup bottom wall, an outer annular anti-slip band made of an elastic material and an inner fixing ring fixed together securely in said annular groove so as to make said outer anti-slip band extend a little down beyond the cup bottom surface.

Abstract: A hand pepper grinder possible to manually grind pepper and/or salt stored in two store chambers in its body, comprising a gear transmission to be manually rotated to transmit rotation to two turning rods and then to two grinding wheels positioned and turning in two grinding cylinders so that the pepper and/or the salt placed in the store chambers can be ground into various kinds of minuteness selectably and adjustably.

Abstract: A pepper grinder possible to be manually operated by pressing or releasing a manipulating plate movably mounted in an opening of the outer wall of a cylindrical body in such a way that a grinding wheel is possible to be rotated by a unit of mechanical structure moved by pressing inward the manipulating plate or to be stopped by releasing back the manipulating plate and thus the pepper grains falling into a gap between a grinding wheel and a grinding cylinder can be ground. Besides, the gap between the two components can be adjusted to change the degree of minuteness of the pepper ground.