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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 |
| 6563302 | Device for sensing projectile velocity in an underwater environment A device for sensing projectile velocity in an underwater environment is provided. The device includes a plurality of evenly spaced voltage coil members positioned in the path of a projectile. Each voltage coil member includes a support frame having an op... | 05/13/2003 |
| 6496447 | Target simulation system A target simulation system is used to simulate a target, such as a submarine, for testing of homing projectiles, such as anti-submarine warfare (ASW) torpedoes. The target simulation system includes a target portion having an impact structure and a plural... | 12/17/2002 |
| 6431553 | Radially pressure balanced floating seal system A radially pressure balanced floating seal system is used to seal a rotating shaft, such as a drive shaft in a torpedo, or other type of vehicle or machinery. The radially pressure balanced floating seal includes an outer seal housing and an inner seal ho... | 08/13/2002 |
| 6428057 | Muzzle door latch for static and dynamic conditions A muzzle door latch, or attachment mechanism, incorporates spring-loaded plungers acting within concave surfaces to provide additional resistance to vibration. The door, or cap, has an elastomeric seal about its outer circumference, which fits snugly with... | 08/06/2002 |
| 6430104 | Sonar system performance method A method is disclosed for evaluating and/or selecting sonar systems and sonar sensors is provided that results in a performance rating that represents both the magnitude and consistency of detection of targets positioned at different depths. In a preferre... | 08/06/2002 |
| 6428012 | Compact drive shaft floating seal system A compact floating seal system for sealing a rotating shaft within a structure. The floating seal system has a cylindrical outer seal housing positioned within the structure with a cylindrical internal recessed region formed in the outer seal housing and ... | 08/06/2002 |
| 6421897 | Insertion tool for inserting an O-ring into an internal O-ring The insertion tool is used to insert an oversized O-ring into a groove, such as a internal groove in an seal housing. The insertion tool includes a base for supporting the housing and an O-ring support extending into the housing and having a top support s... | 07/23/2002 |
| 6424596 | Method and apparatus for reducing noise from near ocean surface sources The present invention is directed to a method and system for significantly reducing the acoustic noise from near-surface sources using an array processing technique that utilizes Multiple Signal Classification (MUSIC) beamforming and the Lloyd's Mirror in... | 07/23/2002 |
| 6424923 | Method for computing three dimensional unsteady flows by solution of the vorticity equation on a Lagrangian mesh A method for computing three dimensional unsteady flows about an object. An allowable error is established for the vorticity term calculations, and object geometry is provided giving surface points on an object and a region of interest. A mesh is establis... | 07/23/2002 |
| 6421620 | Test data processing system A processing system and method is used to process acoustic and non-acoustic test data acquired from a number of data collectors. The post-processing system and method is implemented as software and hardware capable of running on a PC. The processing syste... | 07/16/2002 |
| 6418794 | Propulsion thrust test system A system is provided for testing a propulsor having a first end that can attach to a payload and a second end at which thrust is generated. A bulkhead is sealed to the first end of the propulsor. The bulkhead with the propulsor coupled thereto is suspende... | 07/16/2002 |
| 6415729 | Side plate rudder system The present invention relates to an improved steering system for a water craft and an improved method of steering. The steering system includes at least two variable camber plates or rudders mounted to a hull of the water craft for imparting a steering fo... | 07/09/2002 |
| 6408871 | Two way pressure relief valve A two way pressure relief valve for equalizing pressure between a first region and a second region. The valve has a housing with a lateral aperture in communication with the second region and a first aperture in communication between the first region and ... | 06/25/2002 |
| 6411565 | Multi-use torpedo dispensed single mode optical fiber A system is provided in which a torpedo is launched from a submarine and pays out an optical fiber as it moves away from the submarine towards a target. The optical fiber is attached to the submarine and provides an optical communications link between the... | 06/25/2002 |
| 6400647 | Remote detection system A remote acoustic detection system includes at least one detection unit delivered to a remote or inaccessible location by a missile or other aircraft. The detection unit monitors acoustic events at the location such as aircraft takeoffs and landings and p... | 06/04/2002 |
| 6398579 | Electrical connector assembly An electrical connector assembly including a female connector assembly and a male connector assembly configured for quick push-pull connect and for squeeze-to-release disconnect. The female and male connector assemblies are each molded of a plastics mater... | 06/04/2002 |
| 6395359 | Power cylinder non-metallic liner seal assembly Corrosion resistance is provided for a power cylinder by providing a preloaded molded urethane elastomer sleeve liner within an outer cylinder of material such as a copper/nickel alloy which is subject to corrosion from long-term exposure to ambient fluid... | 05/28/2002 |
| 6397200 | Data reduction system for improving classifier performance A data reduction method for a classification system using quantized feature vectors for each class with a plurality of features and levels. The reduction algorithm consisting of applying a Bayesian data reduction algorithm to the classification system for... | 05/28/2002 |
| 6397202 | System and method for monitoring risk in a system development program A computerized system and method are provided that may be used to project a plurality of risk levels that may develop during the course of a large development project. A plurality of inputs are stored and converted for use to a metric that is used by an e... | 05/28/2002 |
| 6392606 | Antenna extension system An antenna extension system for extending an antenna from an underwater vehicle. The system comprises a housing disposed wholly within the vehicle and a plurality of telescopically connected tiers extendible from a base tier disposed within the housing, a... | 05/21/2002 |
| 6390722 | Release link for interconnected cables A release link for interconnecting first and second cables, includes a cylinder having an open first end and an aperture through a second end, a collar fixed to the cylinder first end, and having an annular internal flange, and a guide washer slidably dis... | 05/21/2002 |
| 6388184 | Deployable nose for an underwater vehicle A deployable nose is used on an underwater vehicle to provide a shorter length when in a retracted position and to provide a reduced drag when in the deployed position. The deployable nose includes a plurality of nose sections and a deployment mechanism t... | 05/14/2002 |
| 6386133 | Torpedo tube shutter-pressure release Two-way pressure release valves in a shutter reduce the force needed to rotate it from a torpedo tube while the submarine is underway at high speeds. The valves are each mounted in a separate aperture in the shutter and have a pair of biasing springs that... | 05/14/2002 |
| 6388438 | Speed sensing circuit for underwater projectiles A system for sensing projectile velocity and position having a plurality of support members positioned in a path of said projectile. Each support member has an aperture with a resistive trace supported in the aperture. The resistive trace can be separated... | 05/14/2002 |
| 6378383 | Fat-line towed-array force measurement apparatus An apparatus for measuring tensile and bending forces applied to a fat-line towed-array. Tension sensors are configured within a modified fat-line towed-array bulkhead to measure axial tension applied to the front of the fat-line towed-array, while bendin... | 04/30/2002 |
| 6376762 | Small vehicle launch platform A launch platform for a host vehicle. There is a cradle having a cylindrical shape with peripheral axial recesses formed therein and arranged around the cradle. A release mechanism is positioned within the cradle. The release mechanism releasably joins sm... | 04/23/2002 |
| 6374053 | Underwater strobe light control circuitry A device for controlling a strobe light in underwater high speed photography in a first aspect includes a plurality of spaced break screen or sense coil members, a projectile for launch through the series of break screen or sense coil members, a camera ha... | 04/16/2002 |
| 6367307 | Calibrated stop bolt for longitudinal shock test fixture A calibrated stop bolt is provided for measuring the dynamic load transmitted to the calibrated stop bolt during a shock test. The stop bolt includes an anterior extension and a posterior extension, for restraining a torpedo bearing plate therebetween, an... | 04/09/2002 |
| 6367401 | Submarine countermeasure launcher with gas capture A countermeasure launcher system, for use by a submarine, reducing any detectable signature by preventing the escape of pressurized gas into seawater at the forward end of the system's launch tube upon launching a countermeasure. The pressurized gas that ... | 04/09/2002 |
| 6365890 | Underwater optical load cell system A system is provided for detecting movement of an object underwater. A housing positioned underwater defines a gas-filled cavity receiving an optical reflector that is fixedly coupled to an object underwater. At least one optical sensor is adjustably posi... | 04/02/2002 |
| 6341101 | Launchable countermeasure device and method A launchable countermeasure device and method is disclosed that may be selectively operated to produce one or more of a plurality of countermeasure techniques. The device is compatible with presently existing launch control panels that are connected to an... | 01/22/2002 |
| 6336834 | Self-deploying rudder for high speed maneuverability of jet-powered watercraft A rudder assembly is attached to the nozzle of a jet-powered watercraft by a spring-loaded pivot so as to turn with the nozzle when the craft is steered. The rudder assembly has two flat plate rudders with a baffle plate attached perpendicularly between t... | 01/08/2002 |
| 6336641 | Break-away muzzle cap retention mechanism A break-away end cap assembly includes a tube member of predetermined characteristics and an end cap member for releasably securing the open end of the tube member. An annular recessed groove is formed in the inner surface of the tube member. The end cap ... | 01/08/2002 |
| 6295312 | Time diversity transmission for multichannel adaptive equalization A method and system are provided for communicating in a time-varying medium. A transmitter sends transmissions of the same message data separated in time with respect to one another. A single sensor receives the transmissions. Each received transmission i... | 09/25/2001 |
| 6253627 | Thin-line towed-array force measurement apparatus and method An apparatus for measuring the force applied to a thin-line towed array having a towed array hose formed as part of a thin-line towed array. Coupling components divide the interior of the towed array hose into compartments. Axial tension measurement devic... | 07/03/2001 |
| 6255761 | Shaped piezoelectric composite transducer A piezoelectric composite transducer and method for making same are disclosed. A block of piezoelectric material has a common base and a plurality of uniform-length rods extending from the common base in a parallel spaced-apart fashion to define an array.... | 07/03/2001 |
| 6220906 | Marine propulsion assembly A marine propulsion assembly comprises a drive shaft, a first propeller fixed to the drive shaft and turnable therewith in a first direction, an annular array of gear teeth disposed on the first propeller and turnable therewith, a second propeller aligned... | 04/24/2001 |
| 6216626 | Flow release elastomeric ejection system An apparatus for providing a rapid fluid impulse which can be used for launching vehicles into a liquid medium. The apparatus comprises a ring diaphragm of coupled concentric elastomeric rings, adapted to accept pressurized fluid at an interior side. The ... | 04/17/2001 |
| 6210470 | Ultrasonic gas separator Gas bubbles in a moving fluid are collected in a chamber alongside the conduit carrying the fluid. In a preferred embodiment, an ultrasonic transducer cooperates with a reflector to create a standing ultrasonic wave pattern that is oriented at an acute an... | 04/03/2001 |
| 6179154 | Insert for an opening in a composite material pressure vessel A pressure vessel insert comprises a plate having an outboard surface and an inboard surface interconnected by outer edge surfaces, and defining an aperture extending therethrough from the outboard surface to the inboard surface. The plate is provided wit... | 01/30/2001 |
