Patent records

5996503

FIELD OF THE INVENTION The invention relates generally to hand grenades, and more particularly to a reusable, gas-powered hand grenade for ejecting projectiles such as paintballs.

6850152

5003050

5520331

FIELD OF THE INVENTION The invention relates to a nozzle for atomizing liquids such as water. Nozzles of this type are useful for creating a water-mist for fire extinguishment.

6132356

6145441

FIELD OF THE INVENTION The invention relates generally to projectiles, and more particularly to a low cost frangible payload-dispensing projectile fired from a pneumatic or a buffered gun-powder launcher and suitable for use in both non-lethal riot/crowd control operations and civilian/military activities like target practice and war games.

6224898

GOVERNMENT INTEREST The invention described herein may be manufactured, used and/or licensed by or for the United States Government.

6232931

The present invention relates to frequency selective surfaces, and more particularly, to a frequency selective surface having frequency response characteristics which are opto-electronically modulated by selectively illuminating photonically controlled elements connected across frequency scattering elements integrated in the surface.

6240742

ORIGIN OF THE INVENTION The invention described herein was made in the performance of official duties by an employee of the Department of the Navy and may be manufactured, used, licensed by or for the Government for any governmental purpose without the payment of any royalty thereon.

6241164

6266428

6407539

6418932

TECHNICAL FIELD The present invention is a single patient isolation pod. The inventive pod is for transport of a patient and provides convertibility between a mode protecting the patient against undesired additional exposure to a hazardous environment and a mode protecting against contamination of others by the isolated patient.

6470214

6837175

6513054

Sets of coefficient polynomials are used to design embedded-component architectures that have capability for asynchronous parallel execution at an advantageous arithmetic level where algebraic merging is realized with other operations, algorithms or applications. Because of the particular hardware structures made possible by the use of CPA, higher computational granularities and complex modules are more easily feasible than by using conventional arithmetic and, additionally, increased efficiency is obtained for algorithmic computations involving single and multiple operations. This is achieved by the merging of operations and the integration of algorithms, and thereby avoiding the necessity of performing the entire basic arithmetic separately for each operation or algorithm. In the Asynchronous Parallel Arithmetic (APA) Processor Utilizing Coefficient Polynomial Arithmetic (CPA), the various sets of coefficient polynomials represent the merged operations or algorithms at much earlier time slots and their resolution to the final result level is accomplished with notably increased efficiency when compared to conventional structures.

6641773

6686680

6731804

FIELD OF THE INVENTION The invention concerns a remote sensing system and method for identification of chemical and biological materials dissolved in liquids that uses microwave radiation to stimulate thermal luminescence of contaminants to develop a fingerprint absorption profile of these contaminants.

6837240

STATEMENT OF GOVERNMENT INTEREST The invention described herein may be manufactured and used by or for the Government of the United States of America for governmental purposes without the payment of any royalties thereon or therefor.

6748609

A method and combination creates an air tight CBR impervious barrier for combatants. Protective garments including a protective overgarment, gloves, and over-boots are donned. The protective garments have an annular drawstring interface between a hooded-coat and trousers of the protective overgarment, an annular interface between each sleeve of the hooded-coat and each glove, and an annular interface between each leg portion of the trousers and each over-boot. Dilating elastomeric sheaths to an extended or stretched disposition and placing each elastomeric sheath over a separate one of the interfaces allow constricting of each elastomeric sheath over a separate one of the interfaces and compressedly engaging of the interfaces and the wearer''s body by the constricting elastomeric sheaths to create an air-tight CBR impervious barrier at the interfaces. Elastomer, adhesive, or other coatings can be on inside surfaces of elastomeric sheaths to create better friction surfaces.

6751580

6766744

GOVERNMENTAL INTEREST The invention described herein may be manufactured, used and licensed by or for the U.S. Government. FIELD OF THE INVENTION The present invention relates generally to incendiary devices, and more particularly, to incendiary devices for producing controlled-diameter holes in metallic targets.

6817297

6830728

Apparatus and method for detecting presence of an analyte in ambient air. The apparatus comprising a valve for admitting ambient air, a line for conveying the air to a sensing element, a housing for isolating the environment around the sensing element, an inlet port for flowing the air tho the sensing element in a turbulent flow in a direction substantially perpendicularly to the sensing element, an outlet port for conveying the air from the sensing element, and a pump in communication with the outlet port for providing suction for drawing the air to the sensing element. The method includes the steps of drawing in ambient air that may contain an analyte, projecting the air at a sensing element in a turbulent flow by flowing the air at the sensing element, the sensing element having on its surface a chemoselective material that selectively interacts with the analyte, and detecting the interaction of the analyte with the sensing element.

6847153

A phase mixed thermoplastic polyurethane elastomer is provided for use in tranducers including underwater transducers, sonars and other electrostriction driven devices. The thermoplastic polyurethane elastomer includes an isocyanate, a butanediol, a polytetramethylene ether glycol, and a polyhydric alcohol. The thermoplastic polyurethane elastomer being made by adding the polytetramethylene ether glycol to isocyanate to form a mixture, then holding said mixture of the polytetramethylene ether glycol and isocyanate to a predetermined temperature for a predetermined time, degassing the mixture and sealing the mixture, measuring the percent free isocyanate to a predetermined molar ratio with the polytetramethylene ether glycol, chain extending the mixture into a first polymer with the butanediol and the polyhydric alcohol, adjusting the stoichiometry of said chain extender to a predetermined isocyanate index to avoid crosslinking, and postcuring the resin of the first polymer for a predetermined time and temperature.

6849356

STATEMENT OF GOVERNMENT INTEREST The invention described herein may be manufactured and used by or for the Government of the United States of America for governmental purposes without the payment of any royalties thereon or therefore. CROSS REFERENCE TO OTHER PATENT APPLICATIONS Not applicable.

6852903

FIELD OF THE INVENTION This invention relates to reactive sorbents and methods of making and using the same for the decontamination of surfaces contaminated with highly toxic agents, including chemicals warfare ("CW") agents and/or industrial chemicals, insecticides, and the like. More particularly, the invention relates to improvement of surface decontamination processes and reagents by the development of novel sorbents and sorbent preparation methods, including compositions comprising dehydroxylated aluminum oxides, and/or compositions comprising high porosity carbon impregnated with a reactive solution.

6863751

FIELD OF THE INVENTION This invention relates to propellant formulations and plastic bonded explosive compositions. More particularly, this invention relates to energetic compositions, which offer increased performance in conjunction with a total absence of halogen based oxidizers to eliminate exhaust products, such as hydrogen chloride.

6872266

FIELD OF THE INVENTION The present invention relates to recyclable energetic compositions and methods of processing the same, and more specifically, energetic compositions that facilitate reduction of process pollution, reuse of what would otherwise be hazardous waste, and reduction of the expense that is involved in its disposal.

6875602

I. FIELD OF THE INVENTION This present invention relates to thermal cyclers, or "thermocyclers." More particularly, the present invention relates to novel portable thermocyclers. II. DESCRIPTION OF THE RELATED ART Systems which require multiple or cyclic chemical reactions to produce a desired product often require careful temperature control to produce optimal results. Such reactions include nucleic acid amplification reactions such as the polymerase chain reaction (PCR) and the ligase chain reaction (LCR). Consider PCR for instance. PCR is a technique involving multiple cycles that results in the geometric amplification of certain polynucleotide sequences each time a cycle is completed. The technique of PCR is well known to the person of average skill in the art of molecular biology. The technique of PCR is described in many books, including, "PCR: A Practical Approach," M. J. McPherson, et al., IRL Press (1991), "PCR Protocols: A Guide to Methods and Applications," by Innis, et al., Academic Press (1990), and "PCR Technology: Principals and Applications for DNA Amplification," H. A. Erlich, Stockton Press (1989). PCR is also described in many U.S. patents, including U.S. Pat. Nos. 4,683,195; 4,683,202; 4,800,159; 4,965,188; 4,889,818; 5,075,216; 5,079,352; 5,104,792; 5,023,171; 5,091,310; and 5,066,584, which are hereby incorporated by reference for the purpose of providing examples of PCR devices and techniques. The PCR technique typically involves the step of denaturing a polynucleotide, followed by the step of annealing at least a pair of primer oligonucleotides to the denatured polynucleotide, i.e., hybridizing the primer to the denatured polynucleotide template. After the annealing step, an enzyme with polymerase activity catalyzes synthesis of a new polynucleotide strand that incorporates the primer oligonucleotide and uses the original denatured polynucleotide as a synthesis template. This series of steps (denaturation, primer annealing, and primer extension) constitutes a PCR cycle. As cycles are repeated, the amount of newly synthesized polynucleotide increases geometrically because the newly synthesized polynucleotides from an earlier cycle can serve as templates for synthesis in subsequent cycles. Primer oligonucleotides are typically selected in pairs that can anneal to opposite strands of a given double-stranded polynucleotide sequence so that the region between the two annealing sites is amplified. The temperature of the reaction mixture must be varied during a PCR cycle, and consequently varied many times during a multicycle PCR experiment. For example, denaturation of DNA typically takes place at around 90 degrees to 95 degrees C., annealing a primer to the denatured DNA is typically performed at around 40 degrees to 60 degrees C., and the step of extending the annealed primers with a polymerase is typically performed at around 70 degrees to 75 degrees C. For this reason, apparatuses have been developed which permit the accurate control of the temperature of reaction vessels in which such amplification reactions are performed. For example, there are a number of thermal "cyclers" used for DNA amplification and sequencing in the prior art in which one or more temperature controlled elements or "blocks" hold the reaction mixture, and the temperature of a block is varied over time. As will be appreciated,

6907940

6923105

6924928

A device amplifies light at wavelengths in the vicinity of 1420-1530 nm, using thulium doped silica-based optical fiber. This wavelength band is of interest as it falls in the low-loss optical fiber telecommunications window, and is somewhat shorter in wavelength than the currently standard erbium doped silica fiber amplifier. The device thus extends the band of wavelengths which can be supported for long-distance telecommunications. The additional wavelength band allows the data transmission rate to be substantially increased via wavelength division multiplexing (WDM), with minimal modification to the standard equipment currently used for WDM systems. The host glass is directly compatible with standard silica-based telecommunications fiber. The invention also enables modified silicate based amplifiers and lasers on a variety of alternative transitions. Specifically, an S-band thulium doped fiber amplifier (TDFA) using a true silicate fiber host is described.

7322294

STATEMENT OF GOVERNMENT INTEREST The invention described herein may be manufactured and used by or for the Government of the United States of America for government purposes without the payment of any royalties therefor.

6994048

6995723

6997218

CROSS-REFERENCE TO RELATED PATENT APPLICATIONS This patent application is co-pending with one related patent application entitled "INFLATABLE TRAJECTORY ALTERING AND BLAST ENERGY ABSORPTION SYSTEM" (Navy Case No. 96127) by the same inventors as this patent application. FIELD OF THE INVENTION The invention relates generally to body armor, and more particularly to an inflatable body armor system that alters a projectile''s trajectory as the projectile passes through an inflated plenum.

7002681

7006923