Patents Represented by Attorney Harvey A. Gilbert
  • Patent number: 5262362
    Abstract: A chemical coating consisting of a mixture of tetraethoxysilane (TEOS), AC.sub.4 H.sub.9).sub.3, LiOH, Ti(OC.sub.3 H.sub.7).sub.4, Zr( ).sub.2 C.sub.5 H.sub.7).sub.4, HNO.sub.3 for pH control, and glycerol which produces an environmentally protective barrier resistant to cracking or crazing to a glass fiber to which it is applied by the SOL-GEL process.
    Type: Grant
    Filed: June 22, 1992
    Date of Patent: November 16, 1993
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventor: Josephine Covino-Hrbacek
  • Patent number: 5257324
    Abstract: A zero-time-delay video processor circuit includes reduction circuitry for eceiving a digital image input and providing a reduced and Nyquist acceptable digital image output signal. A controlled write/read memory connected to the reduction circuitry provides the digital image output. A digital estimator is connected to the reduction circuitry for providing an estimated gain signal. A gain corrector circuit is connected to the controlled write/read memory for compensating for errors in the estimated gain. A signal indicative of the true or required gain is provided to the digital estimator and to the gain corrector.
    Type: Grant
    Filed: November 1, 1991
    Date of Patent: October 26, 1993
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventor: Jon H. Bumgardner
  • Patent number: 5252911
    Abstract: A AC to DC power converter unit includes an AC/DC converter section operable to convert an AC input into a plurality of unregulated internal DC outputs and a pair of positive and negative switching DC/DC converter sections connected to said AC/DC converter section and receiving a pair of positive and negative unregulated internal DC outputs therefrom being of a first voltage level and generating a pair of dual positive and negative regulated external DC outputs being of a second voltage level different from said first voltage level.
    Type: Grant
    Filed: July 22, 1991
    Date of Patent: October 12, 1993
    Inventor: George A. Banura
  • Patent number: 5241388
    Abstract: A video signal filtering circuit and method includes the operative steps of eceiving unfiltered high-state and low-state components of a video signal being substantially equally injected with electromagnetic noise, subtracting the unfiltered high-state and low-state components of the video signal one from the other so as to thereby produce a first signal having a DC offset component and an AC data-containing component free of noise, removing the DC offset component from the first signal and passing the noise-free AC data-containing component, clamping the first signal to a preset DC reference level corresponding to a specified sync level of a standard video signal so as to thereby produce a second signal having the AC data-containing component free of noise and being clamped to the preset DC reference level, and isolating the second signal from external electronic disturbances so as to produce a noise-free AC data-containing reference level-clamped output signal for providing a filtered high-state component h
    Type: Grant
    Filed: September 8, 1992
    Date of Patent: August 31, 1993
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Ronald D. Schofield, Larry F. deLuiter, William J. Fretz
  • Patent number: 5208842
    Abstract: A precise digitally-controlled variable attenuation circuit for adjusting e attenuation of a signal in an external circuit includes a signal magnitude detector, a resistance adjustment control, and a resistance divider network. The signal magnitude detector has lower and upper threshold limits representing a desired range of attenuation and is operable to receive and compare a control signal with the lower and upper threshold limits, and, in response thereto, produce either a first signal if the control signal is less than the lower threshold limit or a second signal if the control signal is greater than the upper threshold limit. The adjustment control is capable of receiving the first and second signals and is operable to produce either a digital count-down signal in response to the first signal or a digital count-up signal in response to the second signal. The resistance divider network has a fixed resistance and a digitally-adjustable device with a variable resistance.
    Type: Grant
    Filed: November 1, 1991
    Date of Patent: May 4, 1993
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Kenneth L. Atwood, Hyun S. Kim, Kang M. Lee
  • Patent number: 5206456
    Abstract: A thermal battery activated by external heat comprising an anode, e.g. cosed of a lithium-aluminum alloy, a cathode, e.g. composed of iron disulfide, and an electrolyte, e.g. a lithium chloride-potassium chloride eutectic, the electrolyte being inactive at ambient temperature but being activated by melting at a predetermined temperature when exposed to external heating. The battery can be used as a sensor or to ignite pyrotechnic and power electronic devices, in a system for reducing the hazard of ordnance exposed to detrimental heating. A particular application is the use of the battery to activate a squib to function in conjunction with one or more other components, to vent an ordnance case, preventing its explosion in a fire.
    Type: Grant
    Filed: November 5, 1990
    Date of Patent: April 27, 1993
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Louis Pracchia, Ronald F. Vetter, Darwin Rosenlof
  • Patent number: 5168359
    Abstract: In a video system, a video signal operates at a vertical scan rate to gente a first video frame characterized by a first number of lines per frame. A method and apparatus are provided to convert the first video frame into a second video frame characterized by a second number of lines per frame. The first video frame is stored at the vertical scan rate as digital samples. A portion of the stored digital samples from each line of the first video frame are retrieved at the vertical scan rate. The number of digital samples in the retrieved portion from each line of the first video frame is governed by a ratio equal to the second number divided by the first number, such that the retrieved portion from the first video frame is the second video frame.
    Type: Grant
    Filed: August 1, 1991
    Date of Patent: December 1, 1992
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventor: George T. Mills
  • Patent number: 5160468
    Abstract: A material for use in containers for explosive media and a material for use n containers for absorbing the dynamic shock of an explosion and prevent sympathetic detonation of adjacent explosive devices in which the material is a relatively lightweight, porous, shock absorbing material mixed with a binder to provide a castable composite. A storage container receives the cast filler and is thereby hindered from being subjected to destruction from sympathetic detonation due to donor detonation within the storage container or a proximate storage container.
    Type: Grant
    Filed: February 28, 1992
    Date of Patent: November 3, 1992
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Carl C. Halsey, Sharon L. Berry
  • Patent number: 5158173
    Abstract: A material for use in containers for explosive media and a material for use n containers for absorbing the dynamic shock of an explosion and prevent sympathetic detonation of adjacent explosive device in which the material is a relatively lightweight, porous, shock absorbing material mixed with a binder to provide a castable composite. A storage container receives the cast filler and is thereby hindered from being subjected to destruction from sympathetic detonation due to donor detonation within the storage container or a proximate storage container.
    Type: Grant
    Filed: July 27, 1990
    Date of Patent: October 27, 1992
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Carl C. Halsey, Sharon L. Berry
  • Patent number: 5157337
    Abstract: A dielectric constant measurement probe assembly includes a coaxial cable ving a outer electrical conductor and a center electrical conductor extending within the outer conductor and terminating at an end portion which projects beyond an end portion of the outer conductor. An adapter member has a central passage receiving the coaxial cable with the outer conductor of the cable extending through the passage of the adapter member and projecting therefrom. An outer tube has a bore composed of first and second axial sections. The second bore section is smaller in diameter than the first bore section. The adapter member is inserted in the first bore section with the end portion of the coaxial cable outer conductor inserted into the second bore section and making electrical contact therewith such that the outer tube thus constitutes an extension of the outer conductor.
    Type: Grant
    Filed: October 3, 1990
    Date of Patent: October 20, 1992
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Michael M. Neel, Frank J. Schiavone
  • Patent number: 5157342
    Abstract: A digital PLL circuit has a serial shift register receiving input pulses and producing time-delayed output pulses, a clock generator applying clock pulses to the shift register to drive it and set the phase shift of the output pulses, and a digitally-controlled potentiometer connected in series with the clock generator and being adjustable to change its resistance in increments in order to adjust the resistance of the clock generator and thereby set the frequency of the clock pulses applied to the shift register and the time delay produced by the shift register. A feedback control arrangement receives the same digital input pulses as received by the shift register and detects the periods of the input pulses by counting to produce control pulses proportional to the detected periods. A ROM unit stores a look-up table of values representing an array of different counts of increments by which the potentiometer resistance can be adjusted.
    Type: Grant
    Filed: August 30, 1991
    Date of Patent: October 20, 1992
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Kenneth L. Atwood, Peter K. Pae
  • Patent number: 5155298
    Abstract: A thermally activated case venting safety apparatus is used to minimize the otential for detonation of a warhead or other encased explosive when such item is subjected to excessive thermal environments. An aft end closure plate to a warhead casing is secured using an expandable snap ring with a temperature activated releasing mechanism. The snap ring is expanded using a caliper device with an adjustable slide assembly which adjust the snap ring to the required dimensions. An eutectic solder plug or similar plug is attached to the bottom base of the adjustable slide assembly and holds the snap ring in the expanded position. The plug will melt at a predetermined temperature and thus allow the expandable snap ring to retract. Once the snap ring has retracted, the closure plate will be ejected due to the internal case pressure and the warhead case will vent.
    Type: Grant
    Filed: September 30, 1991
    Date of Patent: October 13, 1992
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventor: Robert A. Koontz
  • Patent number: 5155322
    Abstract: A compact metal bellows preferably for converting pressure changes into lar motion, has alternating inner and outer welds accomplished by a laser weld technique. An inner weld fixture is provided for deflecting a portion of the bellows away from the very small beam spot of the laser weld process.The compact metallic bellows of the present invention is particularly adapted for fitting into a small space and taking advantage of its equal free length and solid length to provide a spring force equal the sum of the spring force of each of the several metallic diaphragms.
    Type: Grant
    Filed: October 23, 1991
    Date of Patent: October 13, 1992
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Gordon R. McClellan, Robert J. Steele, III
  • Patent number: 5154108
    Abstract: A compact metal bellows preferably for converting pressure changes into lar motion, has alternating inner and outer welds accomplished by a laser weld technique. An inner weld fixture is provided for deflecting a portion of the bellows away from the very small beam spot of the laser weld process. The compact metallic bellows of the present invention is particularly adapted for fitting into a small space and taking advantage of its equal free length and solid length to provide a spring force equal the sum of the spring force of each of the several metallic diaphragms.
    Type: Grant
    Filed: May 17, 1990
    Date of Patent: October 13, 1992
    Assignee: The United States of America as represented by the Department of the Navy
    Inventors: Gordon R. McClelland, Robert J. Steele, III
  • Patent number: 5149908
    Abstract: A regenerative liquid propellant gun and pertains includes a modified contional fixed bolt extending into a conventional combustion chamber of the regenerative liquid propellant gun. The modified fixed bolt of this invention provides for improved operation of the otherwise conventional regenerative liquid propellant gun and has modified end portion embodiments and internal propellant injection passages, all for the purpose of creating turbulent propellant flow.
    Type: Grant
    Filed: August 19, 1991
    Date of Patent: September 22, 1992
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Klaus C. Schadow, Ephraim Gutmark, Kenneth J. Wilson, Robert A. Smith
  • Patent number: 5148180
    Abstract: A method and apparatus are provided for passive direction finding that demines the sideband and angle of arrival of an incoming radio signal. A four-channel superheterodyne receiver generates quadrature between the radio signals received by each channel. Four inphase/quadrature phase detectors are connected to the receiver for generating inphase and quadrature components of the electrical phase differences between antenna elements of the receiver. The inphase and quadrature components are used for sideband determination and the electrical phase differences are used to derive the angle of arrival.
    Type: Grant
    Filed: July 15, 1991
    Date of Patent: September 15, 1992
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Ralph K. Beyer, Robert E. Hunt
  • Patent number: 5141174
    Abstract: A plurality of magnetic sensors mounted to a missile frame measure magnetic fields from magnets mounted to the movable portion of a seeker mounted in the missile frame. As the angle of attack changes, the field strength measured by each magnetic sensor changes. The magnetic sensors thus produce signals that may be calibrated and processed to determine the angle of attack.
    Type: Grant
    Filed: October 18, 1991
    Date of Patent: August 25, 1992
    Assignee: Commissioner of Patents & Trademarks
    Inventor: Robert J. Sellers
  • Patent number: 5136818
    Abstract: An optical glass fiber polishing apparatus and method utilizing a slurry prised of water, CeO, glycerin and where needed, a base such as NaOH, to realize transmission loss in the fiber as it is polished towards the fiber core. The intensity of light introduced at one end of the fiber is measured at the opposite end, continuously and without interruption of the polishing, to determine polishing progress through the cladding towards the core.
    Type: Grant
    Filed: December 3, 1991
    Date of Patent: August 11, 1992
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventor: Michael Bramson
  • Patent number: H1102
    Abstract: A laser calorimeter which operates by absorbing the energy of a laser beam directed through a lens at the front of the calorimeter. The calorimeter contains a absorbing medium with high absorbance characteristics at the laser wavelength in question. The absorbed laser energy is converted to heat. The device has a means for measuring the changes in temperature of the absorbing medium as well as a means for measuring the changes in pressure inside the calorimeter chamber. The absorbing medium is typically a liquid which also demonstrates preferable heat transfer characteristics. This in turn affords greater precision and a faster response time of the calorimeter when measuring the laser energy. A typical medium for such a device is a dimethylformamide solution which has extremely good absorbance characteristics for an optical path length of 0.015 inches at a laser wavelength of 1.064 microns.
    Type: Grant
    Filed: September 16, 1991
    Date of Patent: September 1, 1992
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventor: Gordon R. McClellan
  • Patent number: H1288
    Abstract: A control and digital telemetry arrangement for an aerial missile includes digital telemetry system, a firing circuit, a battery and a latching relay. The digital telemetry system receives an analog input telemetry signal and produces and transmits to a ground station a digital output telemetry signal representing the current status of missile functions. The firing circuit is connected to the telemetry system to indicate that a firing command signal for firing the missile rocket motor has been received. The battery is capable of being switched back and forth between non-conducting and conducting states. The latching relay is connected between the telemetry system and battery and the system and external ground power and capable of switching the battery from its non-conductive to conductive state for latching power from the battery to said telemetry system. The digital telemetry system, firing circuit, battery and latching relay are packaged in a cannister housing which, in turn, is mountable in the missile.
    Type: Grant
    Filed: April 4, 1990
    Date of Patent: February 1, 1994
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventor: Kenneth P. Lusk