Linear motion male sexual stimulation device

Abstract

An electromechanical device for male sexual stimulation that uses a reciprocal linear motion similar to sexual intercourse, and wherein the penis remains fully inserted during use. The reciprocal linear motion is generated by a small motor which drives a screw and nut mechanism, to which a bracket and gripper is attached. Inserted into the gripper is a flexible sleeve. A penis may be inserted into the device inside the flexible sleeve. The movement of the gripper and sleeve against the penis provides pressure and motion against the penis inside the sleeve in a manner similar to sexual intercourse. The speed, pattern, and location of the motion can be controlled by the user through controls on the outside of the device.

What is claimed is: 
     
       1. A male sexual stimulation device comprising:
 a reciprocating linear motion driver; 
 a gripper attached to the reciprocating linear motion driver; and 
 a flexible sleeve which is inserted into the gripper and which has a means for affixing the sleeve to the gripper, 
 wherein a penis may be inserted into the flexible sleeve and remain fully inserted inside the device during stimulation, and 
 wherein, when the device is activated, the inserted penis remains immobile inside the device while the gripper moves at least a portion of the sleeve affixed to the gripper in an axial reciprocating linear motion along the penis, providing sexual stimulation through friction of the interior of the sleeve against the penis contained in the sleeve due to the axial reciprocal linear motion of the gripper and the portion of the sleeve affixed to the gripper. 
 
     
     
       2. The device of  claim 1 , wherein the linear motion drive comprises a motor and screw mechanism. 
     
     
       3. The device of  claim 2 , wherein the screw mechanism is a threaded ball screw. 
     
     
       4. The device of  claim 2 , wherein the screw mechanism is a threadless ball screw. 
     
     
       5. The device of  claim 1 , wherein the linear motion driver comprises a belt-driven linear actuator. 
     
     
       6. The device of  claim 1 , wherein the linear motion driver comprises a linear motor. 
     
     
       7. The device of  claim 1 , wherein the linear motion driver comprises a slider-crank. 
     
     
       8. The device of  claim 1 , wherein the linear motion driver comprises a hydraulic linear actuator. 
     
     
       9. The device of  claim 1 , wherein the linear motion driver comprises a pneumatic linear actuator. 
     
     
       10. The device of  claim 1 , wherein the flexible sleeve and gripper each comprise magnets, and the flexible sleeve is affixed to the gripper by magnetic attraction. 
     
     
       11. The device of  claim 1 , wherein the gripper further comprises a heating apparatus that warms the flexible sleeve to an optimal temperature. 
     
     
       12. The device of  claim 1 , wherein the gripper comprises an inflatable cavity that may be filled with a gas or a fluid. 
     
     
       13. The device of  claim 1 , wherein the gripper comprises a vibration mechanism that provides stimulation in addition to the linear motion stimulation. 
     
     
       14. The device of  claim 1 , further comprising one or more guide rods that guide the linear motion, the one or more guide rods being configured such that each travel along the one or more guide rods causes the gripper to partially rotate about a longitudinal axis parallel to the linear motion. 
     
     
       15. The device of  claim 1 , further comprising a motor or actuator attached to the gripper mechanism and configured to rotate the gripper about a longitudinal axis parallel to the linear motion independently of the linear motion. 
     
     
       16. The device of  claim 1 , further comprising a rack and pinion mechanism configured to rotate the gripper about a longitudinal axis parallel to the linear motion as it travels in a linear motion. 
     
     
       17. The device of  claim 1 , further comprising:
 one or more guide rods that guide the linear motion; and 
 a pivot or joint installed at the bottom of the one or more guide rods near the end of the device where a penis may be inserted; 
 where the linear motion driver has a pivot at the bottom and is affixed at an angle to the guide rods such that the linear motion causes the one or more guide rods to tilt at the pivot, changing the direction of the linear motion during the linear motion along the one or more guide rods. 
 
     
     
       18. The device of  claim 1 , further comprising:
 one or more guide rods that guide the linear motion; 
 a pivot or joint installed at the bottom of the one or more guide rods near the end of the device where a penis may be inserted; and 
 a separate motor, driver, or actuator which changes the pivot angle of the one or more guide rods independently of the linear motion; 
 wherein the linear motion driver is affixed to the guide rods such that the linear motion remains parallel to the guide rods as the guide rods tilt. 
 
     
     
       19. The device of claim 1, wherein the gripper comprises a flexible strap.