20130036563 | SPIRAL DRIVE MECHANISM AND SPIN MOP WITH THE SAME - A spin mop includes a spiral drive mechanism and a mop head. The spiral drive mechanism includes an upper rod, a sleeve axially secured on the upper rod, a stopper secured in the sleeve, two thread rolling plates positioned in the upper rod, a guide block, a lower rod axially inserted in the upper rod, and a follower secured on a top end of the lower rod. The guide block is placed in between the two thread rolling plates so that the guide block is movable in a spiral direction with respect to the upper rod. The follower is configured to be selectively driven by the guide block so that the follower together with the lower rod is rotatable with the guide block. | 02-14-2013 |