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 |
| 7134215 | Measuring device for measuring gearing and diameters in rotationally symmetrical components A measuring device for measuring gearing and diameters in rotationally symmetrical components (2). The device possesses a fixed feeler pin (9) and a movable feeler pin (10). The movable feeler pin (10), with the aid of a spring actuated m... | 11/14/2006 |
| 5083458 | Method and apparatus for recording loaded running tooth contact patterns on large reduction gears Method for recording loaded running tooth contact patterns on navy or marine large reduction gears comprising the steps of providing a pair of meshing gears having transversely spaced teeth with surfaces subject to wear, coating the surfaces of as least o... | 01/28/1992 |
| 4765065 | Tooth profile sensing instrument An instrument for sensing the profile of an elongate tooth of a corrugation roll or gear wheel or the like. A carriage supports an axially movable stem which is operably connected to an indicator element. The stem has an engagement portion which engages a... | 08/23/1988 |