Penn Jillette of Penn and Teller fame has patented a "Hydro-Therapeutic Stimulator", which uses a hot tub for stimulation.
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| Number | Title | Issue Date |
| 7377022 | Drill press lathe attachment The present invention provides a drill press lathe attachment designed for rotating a workpiece along a horizontal axis to remove material from the workpiece to form it into a desired shape. The drill press lathe attachment comprises a base and a power transfer box ... | 05/27/2008 |
| 5301405 | Milling machine lathe attachment The milling machine lathe attachment is attachable to an existing milling machine so as to eliminate the need for an operator owning both a milling machine and a lathe. It is designed to be mounted to the side of the milling machine and to be used without... | 04/12/1994 |
| 5076743 | Device for drilling undercuts A device for drilling an undercut in a borehole formed into a substrate includes a housing (1) containing a guide sleeve (2) with a bushing (4) arranged eccentrically within and rotatable relative to the guide sleeve. A torsion spring (6) is located betwe... | 12/31/1991 |
| 4995434 | Woodworking lathe tailstock assembly A tailstock assembly for a wood-turning lathe which facilitates the drilling of deep bores into long slender wooden workpieces. The tailstock includes a chuck grasping the tail end of the workpiece, said chuck having an axial center bore therethrough prov... | 02/26/1991 |