Abstract: A mop having a sponge mop pad is effective for cleaning in a hospital for avoidance of internal infection. In a conventional sponge mop, for washing off dust and dirt sticking to the mop after used for the cleaning, spring force has been used for folding the sponge mop pad at the middle position thereof to squeeze off the water contained in the mop by compression force. This requires a large force and workers, especially women workers, had a difficulty in the cleaning work. In the present invention, the mop having the sponge mop pad comprises a projection and the mop squeezer comprises an insert member into which the projection is inserted. By the principle of lever, the sponge mop pad is easily squeezed by homogenous compression force and predetermined water content of the mop, after squeezed, can be realized.

Abstract: An electric toothbrush includes a casing having a handle and a neck extending from the handle. A motor is situated within the handle and has an output shaft with an eccentric cam on it. A tuft block is located at a remote end of the neck. A rocker arm extends longitudinally within the neck and has a proximal end driven by the cam, and a distal end driving the tuft block. A resilient bushing is sealed within the neck and intermediate-portion of the rocker arm extends through it in sealed manner to allow pivoting of the rocker arm across the bushing.

Abstract: An automatic swimming pool cleaning robot is disclosed, comprising a body, a suction head, an unstable valve, a suction pipe having an upper end, a recuperating filter connected to the upper end, and a venturi injector, wherein the unstable valve is activated to activate the robot. The robot combines the advantages of vacuum-fed robots and pressure-fed robots.