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 |
| 7175499 | Method for creating controlled pressure release in a pneumatic device The present invention provides a means for holding the components of the device, a means for storing gas under pressure which is maintained separately from the interior of the device until actuating, a means for releasing pressurized gas from the storage device into... | 02/13/2007 |
| 7004813 | Toy gun with glowing projectiles and method of providing glowing projectiles to a toy gun A toy gun that shoots glowing projectiles and the method of providing glowing projectiles to a toy gun. The toy gun having a body, at least one black light responsive projectile, a cartridge for supplying the projectiles to the body, at least one black light source ... | 02/28/2006 |
| 4215512 | Harmless sonic toy The present invention relates to a sonic toy device, and particularly to a gun-like toy. In accordance with the invention, a pair of closely spaced rolls are mounted on a frame to define a nip therebetween. A hand crank is provided for rotating at least o... | 08/05/1980 |
| 4109608 | Sound producing device A sound producing device which can produce a loud sound is disclosed. The device includes a moveable frame and a flexible and hermetically sealed cylindrical bag enclosed in such moveable frame as well as a bellows extensible and compressible in the axial... | 08/29/1978 |