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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 |
| 7451719 | High temperature superconducting degaussing system A method and apparatus for degaussing a water vessel. The invention involves the use of a light-weight reduced-size degaussing system that comprises a plurality of degaussing coils arranged in a plurality of axes. An electrical current is passed through the pluralit... | 11/18/2008 |
| 7351008 | Floating barrier units A number of individual barrier units form a floating barrier wall each comprising a housing formed in the general shape of a highway barrier having a top wall, a bottom wall, opposed end walls, and, opposed side walls interconnected to form a hollow interior which i... | 04/01/2008 |
| 7233544 | Harbor fence Methods and apparatus determine if an intruder passes into a security zone that is associated with a waterfront asset. An embodiment of the invention provides a harbor fence system that is designed to be deployed in water around ships or other waterfront assets to s... | 06/19/2007 |
| 7152517 | Defensive shield A defensive shield for a ship has a support arm, pivotally mounted to a ship, and a shield pivotally mounted to one end of the support arm. The support arm is movable between a retracted position and a plurality of deployed defensive positions. In the deployed posit... | 12/26/2006 |
| 7140599 | Coupling systems and methods for marine barriers A marine barrier system comprising first and second barrier sections and a coupler system. The first and second barrier sections comprise first and second main flotation members, respectively, and each main flotation member contains buoyant material. The coupler sys... | 11/28/2006 |
| 7063484 | Boat barrier attachment for log and debris booms A watercraft barricade device (1) having a suspended barricade (5) affixed at predetermined positions to vertical risers (3) which shall be mounted to floating log and debris booms or floating booms (7) that when deployed will prevent wat... | 06/20/2006 |
| 7007626 | Amphibious robot devices Devices for navigating in a fluid medium having a solid boundary include a vehicle body and a fin attached to the vehicle body. The fin is configured to oscillate relative to the body such that interaction between the fin and the fluid medium produces propulsive for... | 03/07/2006 |
| 6980483 | Harbor fence Methods and apparatus determine if an intruder passes into a security zone that is associated with a waterfront asset. An embodiment of the invention provides a harbor fence system that is designed to be deployed in water around ships or other waterfront assets to s... | 12/27/2005 |
| 6965505 | Ship degaussing system and algorithm At a ship's magnetic silencing facility, calibration measurements are taken of onboard magnetic fields, and the off-board magnetic signature is minimized through an iterative degaussing process. Current data associated with the signature minimization is retained by ... | 11/15/2005 |
| 6778469 | Harbor fence Methods and apparatus determine if an intruder passes into a security zone that is associated with a waterfront asset. An embodiment of the invention provides a harbor fence system that is designed to be deployed in water around ships or other waterfront assets to s... | 08/17/2004 |
| 5483410 | Advanced degaussing coil system The static magnetic field signature of a sea-going vessel is reduced by sly of degaussing current to pairs of loop coils adjacent to the port and starboard sides of the vessel hull. The coils of each pair are positioned at equal angles to a vertical plan... | 01/09/1996 |
| 5463523 | Zero field degaussing system and method A system and method are provided for degaussing a vessel moving over an urwater magnetic detector. A location at the vessel residing over the magnetic detector is continuously provided to a controller. The vessel is equipped with a plurality of degaussin... | 10/31/1995 |
| 5229541 | Torpedo safety system A safety system for deterring a homing missile from attacking its launching ehicle whereby the launching vessel is enabled to alter the course and neutralize the detonator of the weapon.... | 07/20/1993 |
| 5012742 | Proximity fuze A proximity fuze detects an approaching or attacking torpedo and responds ereto by timely detonating an explosive charge that effectively destroys the torpedo when it is within a predetermined lethal range.... | 05/07/1991 |
| 5001984 | Proximity fuze system A proximity fuze system having a plurality of spatially disposed energy dctors, the response patterns of which overlap in such manner as to form an energy response "fence" for detection of an intruding object within a certain area. An explosive charge is... | 03/26/1991 |
| 4993345 | Floating degaussing cable system A system for degaussing ships includes a floating cable having a plurality f insulated conductors, the cable extending between a barge at one end and an end float at the other end, with a floating saddle member mounted at the mid-portion for engagement by ... | 02/19/1991 |
| 4993344 | Torpedo defense for ships A method and means for protecting ships from torpedo attack having an expive weapon which may be launched overboard as soon as feasible after the detection of said attacking torpedo. The aforesaid weapon contains explosive means as well as steering, dept... | 02/19/1991 |
| 4961393 | Anti-projectile protection fence and method for marine surface vessels A ship or other marine surface vessel to be protected against torpedo or missile attack tows therebehind an articulated train of floating projectile barriers. To defense on attack, the ship circles away from the attacker to a position behind a trailing po... | 10/09/1990 |
| 4373174 | Method for protective magnetization of vessels A method for the protective magnetization of vessels by using magnetic loops (11). The field strength of the magnetic field surrounding the vessel is detected by means of a Hall generator (12) and the current through the magnetic loop (11) is controlled i... | 02/08/1983 |
| 4249834 | Oil spill containment device for aquatic vessels Disclosed herein is an oil spill containment device for aquatic vessels including a flotation collar structure surrounding the periphery of the vessel to be contained, apparatus for deploying this collar including in one embodiment compressed air dispensi... | 02/10/1981 |
| 4186681 | Protection against influence mines 1. Apparatus for decreasing the intensity of cosmic rays at a selected dince beneath a relatively empty displacement volume in an otherwise uniformly loaded ship floating on a body of water comprising in combination, a ship having a relatively empty disp... | 02/05/1980 |
| 4186663 | Transformer movable along power cable 6. A torpedo detecting and explosive charge carrying mechanism comprising an electrically conductive cable, a shielding means adapted for slide on said cable for minimizing the effect of electrically induced eddy currents, and means for transferring power... | 02/05/1980 |
| 3949212 | Underwater lighting for defense against swimmer attack An underwater light unit is constructed to be placed together within simi units around a ship anchorage on the bottom of a body of water. The construction of the optical portion of the housing permits the uniform illumination of said bottom with a high i... | 04/06/1976 |
| 3943870 | Pinging controlled anti-torpedo device 1. A system of the character disclosed for protecting a vessel against todo attack comprising a gimbals mechanism including an outer ring pivotally secured to said vessel and an inner ring pivotally secured to the outer ring with the axis of oscillation ... | 03/16/1976 |
