Patent ID: 9717645
Date: 2017-08-01
CPC Classifications: A61H

Claim:
1. A sexual stimulation device including: a housing; a ball reverse screw rotatably mounted in the housing and having a first proximal end with a torque receiving structure for applying torque to the ball reverse screw from a motor; a reversing nut adapted to hold one or more bearing balls that roll in grooves on the screw, the reversing nut adapted to move linearly up and down the screw as the screw is turned in a single direction; a guide element adapted to guide movement of the reversing nut, the guide element fixed with respect to the housing and prevent rotation of the reversing nut; a moving carrier element connected to the reversing nut and carried by the reversing nut to move between a first position surrounding at least a portion of a grooved length of the ball reverse screw and a second position at least partially longitudinally extended past a distal end of the ball reverse screw to lengthen the stimulation device; a reciprocating stimulation body carried by the movement of the carrier element.