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 |
| 7252347 | Belt over mid-rollers A wheel structure driven by an endless track belt tensioned around a drive wheel and an idler wheel thereof, comprising a plurality of supporting mid-roller wheels provided between the drive wheel and the idler wheel, a second endless belt being tensioned around thi... | 08/07/2007 |
| 7155827 | Method for verifying predetermined bearing preload of differential assembly module A rigid drive axle assembly includes a support beam member having a substantially flat central plate section, a differential assembly module secured to the central plate section through at least two threaded studs extending from the central plate section. The differ... | 01/02/2007 |
| 4310200 | Drive axle truss assembly A truss assembly is provided for the drive axle of an automotive vehicle in which the drive axle includes a differential having a pair of axle housings extending laterally outwardly from opposite sides of the differential and in which a drive wheel is con... | 01/12/1982 |