Magician Harry Houdini patented a "Diver's Suit" enabling the wearer to "quickly divest himself of the suit while being submerged and to safely escape and reach the surface of the water."
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| Number | Title | Issue Date |
| 4561511 | Torsion load cell An electronic scale used for weighing an object or material. The scale includes a platform arranged to move upon receipt of a material thereon. The device further includes frame means, a variable capacitor having a first and a second plate, torsional spri... | 12/31/1985 |
| 4005758 | Weigh scales A base frame supports a load receiving frame by means of opposed torsion bars and a load cell is situated between the load receiving frame at the base frame. This load cell component which may be mechanical or electrical, indicates the load on the scale a... | 02/01/1977 |