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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 |
| 5000516 | Apparatus for rapidly generating pressure pulses for demolition of rock having reduced pressure head loss and component wear An inlet chamber receives fluid from a small high pressure pump, such fluid flowing through a flow restrictor and one-way valve into an accumulator, until very high pressure is established in the accumulator. At the same time, a sealed poppet is pushed ag... | 03/19/1991 |
| 4998479 | Smoke generating device with rechargable cartridge A smoke generating device is disclosed which utilizes a rechargable cartridge containing a vaporizable, smoke producing solution. The cartridge includes an aperture which is filled by a one-way, flap-type seal. When mounting the cartridge to the smoke gen... | 03/12/1991 |
| 4863220 | Highly reliable method of rapidly generating pressure pulses for demolition of rock Providing a fluid pressure pulse generator having a fluid inlet chamber communicating with an accumulator via a movable ball positioned within the inlet chamber, a narrow fluid passageway bypassing the ball, an outlet chamber coupled to a valve seat for p... | 09/05/1989 |
| 4541342 | Pyrotechnic device with metal diaphragm and metal insert In order to initiate a low explosive (pyrotechnic) mixture with a high explosive detonator, a metal diaphragm preferably of aluminium alloy is interposed between the detonator and the mixture. The diaphragm interacts with the detonation wave so that it in... | 09/17/1985 |
