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| Number | Title | Issue Date |
| 8185490 | Class-specific iterated subspace classifier A method is provided for calculating a class-specific iterated subspace for a classification system utilized in a computing system. Training data in the specific class for the class-specific iterated subspace is collected. A linear orthogonal transform is applied tr... | 05/22/2012 |
| 8179327 | Subsurface deployable antenna array A subsurface deployable antenna array is provided which expands upon deployment and contracts for storage to provide an antenna array that can be stored in a comparatively compact space. Electronically interconnected antenna modules are connected by expandable/contr... | 05/15/2012 |
| 8177721 | Remote blood pressure waveform sensing method and apparatus The invention as disclosed is a non-contact method and apparatus for continuously monitoring a physiological event in a human or animal, such as blood pressure, which involves utilizing a laser-based interferometer system in combination with a laser tracking system ... | 05/15/2012 |
| 8175547 | Disposable chemical sensor and wireless communication device A disposable sensor device for remote sensing of conditions such as temperature and dangerous gasses includes a body defining an enclosed chamber, a power source mounted in the chamber, an on-off switch mounted on and accessible from outside the body, a processor mo... | 05/08/2012 |
| 8174166 | Uniformly distributed lead zirconate titanate strain sensor The invention as disclosed is a strain sensor that locates and quantifies the strain energy from a structure. The strain sensor has a lead zirconate titanate wafer with a circular shape such that the shape does not directionally restrict the signal of the sensor. | 05/08/2012 |
| 8156726 | Semiclosed Brayton cycle power system with direct combustion heat transfer A semiclosed diesel fueled Brayton cycle power system is provided using CO2 and steam as the working fluid. Combustion occurs in a combustor between diesel fuel and O2 with CO2 present as a diluent. During combustion, a heated, high ... | 04/17/2012 |
| 8134887 | Directional acoustic density sensor The invention as disclosed is a fiber optic interferometric directional acoustic density sensor that increases the directionality of a vector sensor that is much smaller in size than the wave length of an acoustic wave. This is accomplished through the use of second... | 03/13/2012 |
| 8127705 | Water entry system A water entry system increases the drag of an underwater vehicle by disrupting the cavity that forms during high-speed transit of the vehicle through the water. A series of inlet ports are positioned in regions of the vehicle where pressure stagnation occurs during ... | 03/06/2012 |
| 8127138 | Method for embedding information in sonar The invention as disclosed is of a method to authenticate identify and trace sonar transmissions and echoes by embedding transparent, secure and robust digital watermarks in signal space, where the additional information incurs no cost in bandwidth. The complex shor... | 02/28/2012 |
| 8125198 | Multi-function modulator for low-powered, wired and wireless command, control, and communications applications An amplitude, phase and frequency modulator circuit is provided with the circuit containing a periodically driven switch. The circuit connects a DC power source and a resistive load. Periodic operation of the switch generates a square-wave of voltage across the load... | 02/28/2012 |
| 8120992 | Method for finding range and bearing to underwater object A method for localizing the range and bearing of a distant underwater object includes firing a preselected number of supercavitating projectiles sequentially from a firing location such that each projectile tracks along substantially the same trajectory. Supercavita... | 02/21/2012 |
| 8096253 | Cable fairing attachment Systems and methods for automatically applying fairings to a cable as the cable is deployed from a winch are provided. Each fairing has two halves, with each half having a recess, or groove, to accommodate the cable. Like halves are connected together and the two ha... | 01/17/2012 |
| 8088162 | Membrane pump for synthetic muscle actuation A synthetic muscle comprises an outer layer having an interior filled with a proton containing electrolyte. A first electrode extends into the interior, and a second electrode extends through the interior. The second electrode is attached to the outer layer at two l... | 01/03/2012 |
| 8087372 | Fairlead for a tow cable handling system A handling system with an improved fairlead is provided for protecting a tow cable wherein the cable breaking strength exceeds the system-rated tension load; the fairlead being positioned collinearly between the system bellmouth and winch. A guide slot passes throug... | 01/03/2012 |
| 8087371 | Deployable and inflatable fendering apparatus and method A deployable and inflatable/deflatable fendering apparatus capable of providing protection for watercrafts and docks. The apparatus has an inflatable cylindrical body, an outer collar body, and a water reservoir with an inflating and deflating means. The collar body... | 01/03/2012 |
| 8082802 | Compact and stand-alone combined multi-axial and shear test apparatus A testing apparatus is disclosed that includes a turntable, an upper scissor jack assembly and a lower scissor jack assembly positioned in parallel planes, about a longitudinal axis and affixed to a base. The apparatus is powered by at least three motors with suppor... | 12/27/2011 |
| 8075223 | Deployment system for fiber-optic line sensors A system for deploying a fiber optic line sensor is provided that includes a launch vehicle to which three sections are attached. The first section is a buoy antenna section. The second section is an electronics canister section having control electronics. These sec... | 12/13/2011 |
| 8073797 | Method for solving combinatoral optimization problems A method for solving a combinatorial optimization problem and applying the solutions to routing as employed in naval convoying and other transit point scheduling. The method involves isolating a plurality of vertices into open-ended zones with lengthwise boundaries.... | 12/06/2011 |
| 8065046 | Olivo-cerebellar controller Non-linear control laws are disclosed and implemented with a controller and control system for maneuvering an underwater vehicle. The control laws change the phase of one Inferior-Olive (IO) neuron with respect to another IO. One control law is global, that is, the ... | 11/22/2011 |
| 8064060 | Outboard optical cable sensor system and method A plurality of optical sensors are mounted to a housing made of optically conductive material. The housing seals the optical sensors from a water-filled tube which extends through said housing. The optically conductive material provides optical coupling with the wat... | 11/22/2011 |
| 8063838 | Submarine mast antenna controller The present invention is a submarine mast antenna controller for controlling a plurality of functions performed by an antenna mast of a submarine. The submarine mast antenna controller is a solid state electronic control unit on a single card that monitors various s... | 11/22/2011 |
| 8054712 | Autonomous hydrophone position locating and target tracking system An autonomous hydrophone position locating and target tracking system employing a string or array of acoustic hydrophone equipped apparatuses that are easily and rapidly deployed over the ocean bottom within a preselected volume of water. For each bottom residing hy... | 11/08/2011 |
| 8053057 | Material with improved adhesion surface An apparatus for improving and increasing sustainable shear force capabilities at an interfacing surface between a rigid material and a flexible material is disclosed. The interface includes at least two superimposed components having different surface roughnesses. ... | 11/08/2011 |
| 8047709 | Method and system for interface detection A method and system for detecting the location of an air/sea interface on an Instrumented Tow Cable (ITC) when distributed temperature measurements are provided. The air/sea interface is determined by estimating the variance of observed temperature in the proximity ... | 11/01/2011 |
| 8047149 | Laser-based method for docking an unmanned underwater vehicle to a submarine An Unmanned Undersea Vehicle (UUV) docking system is provided in which the UUV is responsive to a first rotating light beam (which emits from a submarine) to begin a docking procedure. The UUV utilizes a photodetector to detect the first light beam and to guide the ... | 11/01/2011 |
| 8045859 | High-speed underwater data transmission system and method An underwater data transmission system including arrays of nano-meter scaled photon emitters and sensors on an outer surface of an underwater platform. For the emitters, a laser is pulsed to correlate with data packets, providing a beam of photons at a prescribed fr... | 10/25/2011 |
| 8045419 | Method for mitigating spatial aliasing The invention as disclosed is a method for mitigating spatial aliasing that takes advantage of the forward motion of towed array elements to overcome the frequency constraints imposed on beam forming by the spatial separation of the array elements. The method employ... | 10/25/2011 |
| 8044637 | Battery charging method A charging and equalizing method for a battery having a control computer in a charging system in communication with a plurality of module processors. Charging and equalization pauses periodically for voltage measurement by the module processors. The control computer... | 10/25/2011 |
| 8042255 | Rapid fabrication techniques for arbitrary shape piezoelectric transducer sensors The present invention provides methods for making an acoustic transducer. In one possible embodiment, a rigid inner shell is provided with a conductive exterior surface. Masking material is applied onto a first location on the conductive exterior surface of the rigi... | 10/25/2011 |
| 8030825 | Piezoelectric generator and method An apparatus and method is provided to produce energy from movement of a user. At least one pair of plates is utilized to secure an array of cymbal transducers therebetween. The array of cymbal transducers is electrically interconnected with signal conditioning circ... | 10/04/2011 |
| 8006619 | Underwater acoustic tracer system An underwater supercavitating projectile includes means to form ripples on its surrounding cavity so as to provide well-defined disturbances of the cavity boundary. As the ripples move aft of the supercavitating projectile and into the wake behind the advancing proj... | 08/30/2011 |
| 7985924 | Coaxial transducer A coaxial transducer that uses lead zirconate titanate ceramic or other suitable material as an isolator between the conductors in a coaxial cable to transmit acoustic power at useful levels. The lead zirconate titanate ceramic is diced into thin disks and placed in... | 07/26/2011 |
| 7975614 | Acoustic shotgun system A high velocity acoustic signal producing underwater shotgun system for dispersing a plurality of relatively small supercavitating projectiles over a wide spatial field at long range using the dynamics of cavity collapse for better target localization in underwater ... | 07/12/2011 |
| 7966936 | Telescoping cavitator A high speed underwater projectile configuration that includes a cylindrical telescoping cavitator design capable of providing projectile nose shape change where such change to the projectile nose tip geometry results in supercavitation and a concomitant vaporous ca... | 06/28/2011 |
| 7954442 | Towed array deployment system for unmanned surface vehicles A towed array deployment system is provided that uses the flow of fluid through the interior of a tube to deploy a towed line array. The system includes a small surface water craft such as an unmanned surface vehicle having a length between seven and eleven meters a... | 06/07/2011 |
| 7952530 | Serpentine buoyant cable antenna The present invention relates to an improved buoyant cable antenna system. The system includes a buoyant cable transmission line segment and an antenna segment formed from a flexible memory structure comprised of at least one segment of coiled compression, pinched t... | 05/31/2011 |
| 7951339 | Closed Brayton cycle direct contact reactor/storage tank with Oafterburner A closed cycle Brayton direct contact reactor/storage tank uses an afterburner to assist in removing metal vapors from the working fluid. The direct contact reactor/storage tank operates by bubbling an inert gas through liquid metal fuel. The inert gas picks up meta... | 05/31/2011 |
| 7940602 | Real-time system and method of underwater depth discrepancy detection, recordation and alarm notification An underwater depth discrepancy system and method are provided. A comparator compares an actual underwater depth with a predetermined/prerecorded chart depth corresponding to a current location corresponding to the location of the actual underwater depth. A first si... | 05/10/2011 |
| 7938077 | Hydrogen generation apparatus for an underwater vehicle A hydrogen generation apparatus for an underwater vehicle is presented, the apparatus including a hydrolysis reaction compartment, a mass of solid lithium hydride disposed in the compartment, inlet and outlet structure for passing sea water through the compartment t... | 05/10/2011 |
| 7937930 | Semiclosed Brayton cycle power system with direct heat transfer A semiclosed power system utilizing a Brayton cycle with combustion occurring between diesel fuel and O2 in direct contact with an inert gas. The inert gas and products of combustion form a heated working fluid which is expanded in a turbine to provide po... | 05/10/2011 |
