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 |
| 4292687 | Protective shoulder pad construction A protective shoulder pad having novel V-shaped strap connections between the front and back panels of a shoulder pad. A single V-shaped strap can be crossed over on itself at the back panel and secured thereto at a single common point. The free ends of t... | 10/06/1981 |
| 4158242 | Shoulder pad A shoulder pad for football players comprising a chestplate portion, a backplate portion and a pair of arches integrally connecting the plate portions, the arches being laterally spaced to provide an opening for the neck of the wearer with the spacing suc... | 06/19/1979 |
| 4135252 | Shoulder pad A shoulder pad for football players comprising a chestplate portion, a backplate portion and a pair of arches integrally connecting the plate portions, the arches being laterally spaced to provide an opening for the neck of the wearer with the spacing suc... | 01/23/1979 |
| 3991420 | Protective baseball batting garment The protective baseball batting garment is an article used by batters only while at bat in the playing of the game of baseball as done in the United States and perhaps some foreign countries. The protective jacket is adapted to protect the upper portion o... | 11/16/1976 |
| 3981027 | Football shoulder pad restricter Improved football shoulder pads having a restricter comprising rigid or semi-rigid inserts movably mounted each to the breast plates and back plates of shoulder pads worn by football players, which restrict the shoulder pads from putting pressure on the n... | 09/21/1976 |