Patents Represented by Attorney Kenneth E. Walden

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  • Three dimensional range imaging system
    Patent number: 5110203
    Abstract: A pulse of luminant energy of short duration is reflected from a target as n echo source of both two dimensional target imaging data and target depth distance data by optical gating of the echo pulse at one receiving location. The pulse is thereby divided into image depth slices under control of timing signals in order to extract therefrom three dimensional imaging data during its short duration.
    Type: Grant
    Filed: August 28, 1991
    Date of Patent: May 5, 1992
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventor: Bruce S. MacCabee
  • Device and process for attachment of parts to rocket motors
    Patent number: 5106034
    Abstract: An attachment platform positioned longitudinally on a rocket motor chamber nd secured with laser welding techniques. Each attachment platform is continuously sealed longitudinally to the rocket motor chamber through the application of laser welding and optical seam tracking. Application of laser welding techniques allows for repair and installation of attachment platforms on rocket motors fully loaded with live propellant.
    Type: Grant
    Filed: February 28, 1991
    Date of Patent: April 21, 1992
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Jon J. Yagla, Robert W. Lowry, Otho L. Mears
  • Method of bonding carbon-carbon and metal matrix composite structures
    Patent number: 5100049
    Abstract: A method of bonding two carbon/carbon composite pieces or a carbon/carbon mposite piece and a graphite/aluminum metal matrix composite piece together by(1) forming a uniform coating of molten AgNO.sub.3 on the surfaces to be bonded at a temperature above the melting point of AgNO.sub.3 but below the decomposition temperature of AgNO.sub.3 ;(2) placing the molten AgNO.sub.3 coated surfaces to be bonded into contact with each other;(3) decomposing the molten AgNO.sub.3 to form a silver metal layer bonding the pieces together.If a graphite/aluminum metal matrix composite piece is being bonded, a silver diffusion step may be added at the end of the process to strengthen the silver bond to the metal cladding or metal matrix of the metal matrix composite piece.
    Type: Grant
    Filed: July 1, 1991
    Date of Patent: March 31, 1992
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Amarnath P. Divecha, William A. Ferrando, Philip W. Hesse, Subhash D. Karmarkan
  • Impulse transmitter and quantum detection radar system
    Patent number: 5095312
    Abstract: Pulses of short duration are radiated by an impulse radar transmitter wit time domain intervals under control of a clock to monitor a moving target from which echo pulses are reflected. The echo pulses received are measured by a quantum detector in terms of photon energy levels to supply signal data processed during periods between said time domain intervals.
    Type: Grant
    Filed: April 12, 1991
    Date of Patent: March 10, 1992
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Robert E. Jehle, David F. Hudson
  • Method for producing silver coated superconducting ceramic powder
    Patent number: 5091362
    Abstract: A process for silver coating superconducting ceramic powder by(1) mixing AgNO.sub.3 with the superconducting ceramic powder particles;(2) melting the AgNO.sub.3 so that it wets and forms a uniform coating over he surfaces of the particles; and(3) decomposing the AgNO.sub.3 to form a thin, uniform coating of silver metal on the surfaces of the particles.The product is a loose powder of superconducting ceramic particles which are uniformly coated with silver metal. The powder can be cold worked (e.g., swaged, forged, etc.) to form superconducting structures such as rods or wires.
    Type: Grant
    Filed: October 10, 1990
    Date of Patent: February 25, 1992
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventor: William A. Ferrando
  • Phase cancellation enhancement of ultrasonic evaluation of metal-to-elastomer bonding
    Patent number: 5088327
    Abstract: Acoustical radiation is generated and applied to the bonding interface between a radiation transmission material and a radiation attenuating material to determine adhesion quality by extraction of data from a response signal produced by echoes reflected from both the interface and the radiation entry surface on the radiation transmissive material exposed to the generated acoustical radiation. Signal phase cancellation between the echoes from the entry surface and bonding interface produce a signal signature from which the quality of bonding is evaluated. By partial attenuation of the echo from the entry surface, the signature is maximized.
    Type: Grant
    Filed: May 17, 1990
    Date of Patent: February 18, 1992
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventor: Paul M. Gammell
  • Silver coated superconducting ceramic powder
    Patent number: 5082826
    Abstract: A silver coated superconducting ceramic powder made by(1) coating the superconducting ceramic powder particles with AgNO.sub.3 ;(2) melting the AgNO.sub.3 so that it wets and forms a uniform coating over the surfaces of the particles; and(3) decomposing the AgNO.sub.3 to form a thin, uniform coating of silver metal on the surfaces of the particles.The product is a loose powder of superconducting ceramic particels which are uniformly coated with a thin layer of silver metal. The powder can be cold worked (e.g., swaged, forged, etc.) to form superconducting structures such as rods or wires.
    Type: Grant
    Filed: August 2, 1990
    Date of Patent: January 21, 1992
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventor: William A. Ferrando
  • Consolidation of diamond packed powders
    Patent number: 5080752
    Abstract: A process for producing a diamond composite comprising diamond powder parles bonded together by polycrystalline diamond by (1) pressing an intimate mixture of fine opaque nondiamond carbon powder and transparent diamond powder to form a green body that is confined in either a thin walled transparent quartz vessel or a polycrystalline diamond coating; (2) using a pulse laser to quickly melt the opaque nondiamond carbon powder, and (3) allowing the carbon melt to cool and grow homoepitaxially from the surfaces of the diamond particles producing a polycrystalline diamond that bonds the diamond particles together.
    Type: Grant
    Filed: July 8, 1991
    Date of Patent: January 14, 1992
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Lawrence T. Kabacoff, John Barkyoumb
  • High melting aromatic nitrate esters
    Patent number: 5081255
    Abstract: A nitrate ester which is 2,4,6-trinitro-1-(2-hydroxyethylamino)-3- (2-hydyethylnitramino)benzenedinitrate; 2,4,6-trinitro-1,3,5-tris(2-hydroxyethylamino)benzenetrinitrate; 2,2',4,4',6,6'-hexanitro-3-(2-hydroxyethylnitramino)stilbenitrate; 2,5-bis[3-(hydroxyethylaminonitrate)-2,4,6-trinitrophenyl]1,3,4-oxadiazole ; or 2,5-bis[3-(hydroxyethylaminonitrate)-5- (hydroxyethylnitraminonitrate)-2,4,6-trinitrophenyl]-1,3,4-oxiazole and a process for preparing these compounds.
    Type: Grant
    Filed: May 17, 1991
    Date of Patent: January 14, 1992
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventor: Michael E. Sitzmann
  • Liquid level and volume measurement device
    Patent number: 5073720
    Abstract: The liquid level measurement device is an electro-optical device which uses light source (typically a light emitting diode (LED) or laser diode) and an optical detector to measure the level of a liquid in a container. The light beam is passed through the liquid and received by the optical detector. The detector output is processed to determine the liquid level or the liquid volume. A special feature is the ability to measure a continuum of fluid levels or volumes.
    Type: Grant
    Filed: July 30, 1990
    Date of Patent: December 17, 1991
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventor: Gair D. Brown
  • Method of guiding an in-flight vehicle to a desired flight path
    Patent number: 5071087
    Abstract: A method of using two diverts in combination to guide an in-flight vehicle rom its initial flight path at target acquisition to a desired flight path prior to target interception is provided. The two diverts are of known and different magnitudes. The magnitude of an initial projected miss at a closest approach to the target is used to determine the order and timing of the two diverts. At the completion of the second divert, the vehicle is on the desired flight path which may be either a collision or offset course trajectory as required by the vehicle's terminal guidance law.
    Type: Grant
    Filed: March 11, 1991
    Date of Patent: December 10, 1991
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventor: Roger L. Gray
  • Expendable breech gun round
    Patent number: 5063851
    Abstract: A round for an expendable breech gun wherein a filament reinforced breeche is lined with propellant throughout its length whereby the burning rate of the propellant in effect varies with projectile speed within the breechcase. A metal or plastic honeycomb bonded to the inner wall of the breechcase provides mechanical support for the propellant and precludes axial progression of the flame front in advance of the projectile. An alternative construction employs a propellant lining having a succession of increasing burning rates from the breech end to the muzzle end of the breechcase.
    Type: Grant
    Filed: October 28, 1975
    Date of Patent: November 12, 1991
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventor: William M. Moscrip
  • Semiconductor heterojunction device with graded bandgap
    Patent number: 5061973
    Abstract: The semiconductor materials of junction forming layers of a heterojunction tructure are interfaced by a gap region that is graded by degree of alloying of those components of an interfacing material which are respectively compounded in the semiconductor materials of the junction forming layers having different bandgaps and band edges that are aligned by the grading of the interfacing gap region to selectively control rectifying junction characteristics.
    Type: Grant
    Filed: April 27, 1990
    Date of Patent: October 29, 1991
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventor: Tak-Kin Chu
  • Multi-color coincident infrared detector
    Patent number: 5059786
    Abstract: Radiation absorbing layers of epitaxially grown, photovoltaic materials are eposited in stacked relation on a substrate in alignment with a coincident axis of input radiation impinging on a common optically active surface area of a detector device formed by the stacked layers. Semi-insulating layers space the radiation absorbing layers to electrically separate the signal outputs respectively produced in response to impinging radiation limited to separate and distinct wavelengths within a common spectral range as a result of the interrelationships between bandgap energy properties of the layer materials.
    Type: Grant
    Filed: May 4, 1990
    Date of Patent: October 22, 1991
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventor: Tak-Kin Chu
  • Heat sink device for electronics modules packaged in cylindrical casings
    Patent number: 5060115
    Abstract: A device for dissipating heat from electronics encased in a circular hous is disclosed for uses in buoys, sonobuoys, mines and missiles. The device contains a heat dissipating ring that engages the inner surface of the cylindrical electronics case. The inside surface of this ring is tapered to receive a heat transfer disk that is pulled into tight union with the heat dissipating ring. A heat generating module is mounted in heat transfer union with the disk whereby excess heat is transferred from the disk through the ring to the electronics case where it is dissipated into the environment.
    Type: Grant
    Filed: September 28, 1990
    Date of Patent: October 22, 1991
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventor: Mark W. Sewell
  • Explosive magnetic field compression generator transformer power supply for high resistive loads
    Patent number: 5059839
    Abstract: An explosive flux compression generator is coupled to a high resistance load by a pulse transformer. Chemical energy is converted to electromagnetic energy and is transferred by means of the transformer to the high resistance load. The transformer allows coupling to a higher resistive load than is achieved with a transformerless-generator system having a current gain greater than unity.
    Type: Grant
    Filed: May 16, 1977
    Date of Patent: October 22, 1991
    Assignee: Unites States of America as represented by the Secretary of the Navy
    Inventors: Millard F. Rose, Lawrence H. Luessen, Monty P. Villere
  • Multi-ply paper separator
    Patent number: 5054758
    Abstract: An apparatus for separating continuous multiple ply paper manifolds into ividual leaves of continuous fan-folded webs of paper. The apparatus comprises a housing for supporting the various components, a plurality of wire separators 11, and a paper drive mechanism 14 for pulling webs of paper through the apparatus. The apparatus allows for efficient and rapid separation of the continuous manifold into individual webs without tearing or separating the individual web.
    Type: Grant
    Filed: November 30, 1989
    Date of Patent: October 8, 1991
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventor: Bruce M. Windsor, III
  • Recrystallization of 3-nitro-1,2,4-triazol-5-one from dimethylsulfoxide and methylene chloride
    Patent number: H990
    Abstract: The production of 3-nitro-1,2,4-triazol-5-one (NTO) having finely divided rticles of uniform size by dissolving conventionally produced large, jagged, rods of NTO in hot dimethylsulfoxide and then injecting the hot solution through a small orifice into methylene chloride at a temperature of from about -10.degree. C. to about 30.degree. C.
    Type: Grant
    Filed: July 26, 1989
    Date of Patent: November 5, 1991
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventor: Eleonore G. Kayser
  • Preamplifier for laser guided projectile
    Patent number: H995
    Abstract: A gain controllable amplifier wherein a plurality of signal paths are proed with each of the signal paths having predetermined different gain characteristics. The gain of the total amplifier is selected by application of power supply voltages to amplying stages of the different signal paths with the combination of the level of the voltages determining which signal path will be operational and the total gain of the amplifier.
    Type: Grant
    Filed: November 15, 1984
    Date of Patent: November 5, 1991
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventor: Robert D. Moran
  • Fragmenting notched warhead rod
    Patent number: H1047
    Abstract: A rod for use in fragmenting warheads is notched so that when it is subjed to an explosive load it will break into individual fragments of predetermined shape and size. Various materials can be used depending on the desired kill mechanism. The rods may be alternated and stacked to combine materials and kill mechanisms.
    Type: Grant
    Filed: August 5, 1991
    Date of Patent: May 5, 1992
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: William M. Henderson, Leonard T. Wilson, Charles R. Garnett