Patents Represented by Attorney Harvey David

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  • Flexible linear thermal array
    Patent number: 4251794
    Abstract: A flexible cable type of linear thermal array is constructed of a bundle of nsulated conductor pairs enclosed in a braided aramid fiber strength layer through which individual pairs are withdrawn at intended thermistor stations and the end portions thereof loosely caged in the lumens of thermoplastic tubes. After an outer layer of thermoplastic fiber is braided over the bundle and tubes openings are formed through the outer layer and tubes, the wire end portions withdrawn, thermistors connected thereto and reinserted in the tube lumens.
    Type: Grant
    Filed: December 10, 1979
    Date of Patent: February 17, 1981
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventor: Richard C. Swenson
  • Buoy anchoring system
    Patent number: 4246671
    Abstract: A buoy anchoring system includes an anchor device in the form of a weighted annister that pays out line from the center of a fixed, hollow-cored bale during free fall. The line is secured against further pay out after the device impacts the bottom by wrapping about a shaft that is driven upwardly within the bale by the impact. The shaft has a line engaging cross-bar at its upper end, and is held in an extended position prior to impact by a shear pin.
    Type: Grant
    Filed: November 21, 1979
    Date of Patent: January 27, 1981
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventor: Richard C. Swenson
  • Ejected roller shaft disconnect mechanism
    Patent number: 4244456
    Abstract: A rotary power transmitting shaft decoupling device has a driving element sposed coaxially within a driven element and keyed thereto by a plurality of rollers held in aligned grooves and slots of the driving and driven elements, respectively, by an indexing ring that is coaxial with and surrounds the driven element. Actuation to effect decoupling is effected by arresting rotation of the indexing ring until the rollers become aligned with slots in the ring through which the rollers are ejected.
    Type: Grant
    Filed: September 21, 1978
    Date of Patent: January 13, 1981
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventor: W. Aleck Loker
  • Rotary shaft decoupling mechanism
    Patent number: 4244455
    Abstract: A rotary power transmitting shaft decoupling device has a driving component xially aligned with a driven component and keyed thereto by a plurality of force transmitting elements held in operable relation to the driving and driven components, respectively, by an axially shiftable slide element that is coaxial with the driving and driven components and is provided with a lead screw. Actuation to effect decoupling is effected by engaging the lead screw with a plunger so that rotation of the device results in axial shifting of the slide element and withdrawal of the force transmitting elements from operable relation to the driving and driven components.
    Type: Grant
    Filed: October 17, 1978
    Date of Patent: January 13, 1981
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventor: W. Aleck Loker
  • Purge valve for diver's mask
    Patent number: 4241898
    Abstract: A purge valve for full face masks or helmets includes a base member fixed the mask wall and having passages opening in a flat, annular valve seat surface. A manually operable valve member includes an outer cylindrical wall, an inner cylindrical wall reentrant from an end wall and is axially slidable on a stem extending from the base member against the action of a compression spring nested between the cylindrical walls.
    Type: Grant
    Filed: January 8, 1979
    Date of Patent: December 30, 1980
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventor: Steven F. Segrest
  • Condition responsive cable with bendable coaxial sensor mount
    Patent number: 4241427
    Abstract: A condition responsive line array cable having pairs of conductor contain, hollow braided strands plaited into a hollow braid in which transducer mounts are enmeshed and gripped. The mounts comprise a rigid plastic tubular housing in which a rubber jacketed transducer is resiliently suspended by elastomeric projections. Resiliently flexible, hollow, tapered, rubber fairings extend from each end of the housing and are slit to admit wires pulled from a cable strand. The fairings are long relative to the housing diameter and are retained assembled with the housing by cooperating ribs and grooves.
    Type: Grant
    Filed: October 27, 1978
    Date of Patent: December 23, 1980
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventor: Richard C. Swenson
  • Regulated dual DC power supply
    Patent number: 4233558
    Abstract: A dual section power supply, one section for supplying high voltage dc po and the other section for supplying low voltage dc power, are each connected to a common ac source. The high voltage section employs a phase-controlled rectifier, the control circuit for which employs logic signal development using timer techniques dependent on the amplitude of voltage deviation from the intended regulated output level. Each of two low voltage sections employs a power switch controlled by sampling and pulse steering techniques to effect fixed high frequency, variable duty cycle switching. An inhibit input is supplied from each of the low voltage sections to the high voltage section to prevent a high voltage output to the load in the absence of low voltage development.
    Type: Grant
    Filed: September 22, 1978
    Date of Patent: November 11, 1980
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventor: Robert F. Gaertner
  • Serial phase shift beamformer using charge transfer devices
    Patent number: 4233678
    Abstract: A serial phase shift beamformer characterized by a charge transfer device for progressive clocked transfer of quadrature component analog samples of the scanned outputs of a multiplicity of transducer elements in a curved array. Weighting resistors effect scaling of the analog samples during parallel readout of X and Y component samples prior to summation of like components and derivation of the square root of the sum of the squares of the X and Y summations to provide formed beam amplitude signals.
    Type: Grant
    Filed: March 12, 1979
    Date of Patent: November 11, 1980
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventor: Jesse J. Brady, III
  • Diver's suit excess gas exhaust valve
    Patent number: 4229832
    Abstract: A valve for controlling venting of excess gas from a diving suit includes a alve body housing first and second rubber check valves arranged in series. A control knob is rotatable on the valve body to selectively open or close outlet ports for venting gas from between the check valves and to actuate a member to selectively either hold the first check valve closed or to allow it function.
    Type: Grant
    Filed: May 21, 1979
    Date of Patent: October 28, 1980
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventor: Charles H. Dickson, Sr.
  • High intensity navigation light
    Patent number: 4219871
    Abstract: A high intensity running light fixture capable of submersion to substantial epths includes tungsten-halogen lamps housed in glass globe sealed to a heat dissipating base. The fixture avoids reduction in light transmittance of the globe by the improvement wherein a finned heat collector is disposed in the upper regions of the globe, with fins in close proximity to the inner surface thereof, and is connected by thermally conductive pillars to the base.
    Type: Grant
    Filed: May 22, 1978
    Date of Patent: August 26, 1980
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventor: Herbert Larrimore
  • Continuous oil concentration monitor
    Patent number: 4207450
    Abstract: Apparatus for continuously monitoring the concentration of oil in a stream f water meters carbon tetrachloride through a first infrared analyzer to generate a reference signal, mixes the carbon tetrachloride with a sample stream of oily water to extract the oil, then separates and passes the oil containing carbon tetrachloride through a second infrared analyzer that is zeroed by the reference signal. The sample water stream is returned to the main flow and the carbon tetrachloride is reclaimed and recycled.
    Type: Grant
    Filed: June 14, 1978
    Date of Patent: June 10, 1980
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventor: John Mittleman
  • Shaft decoupling device
    Patent number: 4204589
    Abstract: A shaft decoupler wherein driving and driven components having grooved fles are keyed together by rollers held in the grooves by lands between recesses of a retaining assembly that normally rotates with the mentioned components and is momentarily arrested to allow the driving and driven components to advance the roller carrying grooves to alignment with the recesses to effect decoupling. The decoupler is characterized by the use of high strength plastic rollers, cooperating indexing elements to limit relative rotation between the driving component and the retaining assembly, and a solid lubricant filled plastic thrust and journal bearing.
    Type: Grant
    Filed: August 7, 1978
    Date of Patent: May 27, 1980
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: W. Aleck Loker, Jon L. Bortzfield, Steven D. Chard, John W. Hall, John T. Meredith
  • Carbon dioxide absorbent cannister with condensate control
    Patent number: 4193966
    Abstract: A carbon dioxide absorbent cannister in underwater breathing apparatus of e forced recirculation type. The cannister includes a plurality of stackable condenser elements that serve to cool exhaled gas of high relative humidity so that water, necessary to the desired carbon dioxide removing reaction, is condensed from the gas. The condenser elements are characterized by a plurality of radial, blade-like legs, the outer ends of which are in heat transfer relation to the cannister wall, and by a conical diffuser disc that serves as a heat sink.
    Type: Grant
    Filed: June 15, 1978
    Date of Patent: March 18, 1980
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventor: Ronald W. Dowgul
  • Camera jig for underwater stereoscopic photography
    Patent number: 4191461
    Abstract: A portable camera jig for use by divers in making close-up, stereoscopic tographs of underwater surfaces with a single lens camera includes, in combination with a sheet metal frame, a clear water box for operation in turbid water and that will permit illumination and operator viewing of the surface to be photographed, a camera support and parallogram linkage for moving the camera laterally between successive exposures, a light source mounted on a mast, and handles by which an individual diver can position the jig and shift the camera.
    Type: Grant
    Filed: May 16, 1979
    Date of Patent: March 4, 1980
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: John Mittleman, Charles O. Warrell, Ronald S. Peterson
  • Wire guide and method for preconditioning bouyant electrodes
    Patent number: 4185264
    Abstract: Preconditioning of towable, flexible electrodes having a conductive layer nsisting wires helically laid on a bouyant core, to preclude later birdnesting, is accomplished using a flange device having cylindrical mounting portions fixed to the aft end of the core and radially extending flange portions having a circular pattern of guide holes through which aft end portions of the wires pass loosely. The guide holes have their axes disposed at predetermined pitch and convergence angles.
    Type: Grant
    Filed: October 26, 1978
    Date of Patent: January 22, 1980
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventor: William Chrastina
  • Electronic card mount and heat transfer assembly for underwater vehicles
    Patent number: 4184539
    Abstract: A plurality of electronic circuit cards are edge mounted in heat transfer lation to a pair of spaced parallel card mounting plates extending from a bulkhead of an underwater instrumentation vehicle hull having a tubular cover section adapted to be moved into and out of covering relation to the cards and mounting plates. Spring biased slip plates provide heat transfer paths from the mounting plates to the cover section for dissipation to ambient water.
    Type: Grant
    Filed: July 10, 1978
    Date of Patent: January 22, 1980
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventor: Charles R. Rein
  • Target tracking sonar signal processing and display system
    Patent number: 4179681
    Abstract: A sonar signal processing and display system is described which converts log return data to digital form for storage in a magnetic core memory, from which the data can be reconstituted as analog video signals for CRT display at a higher frame rate. Described are means for comparing new data to old to select updating data for the memory, and means for effecting CRT display of moving target tracks in a color distinct from stationary background returns.
    Type: Grant
    Filed: March 5, 1973
    Date of Patent: December 18, 1979
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: William J. Zehner, Henry L. Warner
  • Buoy system for vertical ocean profiling
    Patent number: 4177530
    Abstract: A buoy system for obtaining oceanic data from a predetermined depth to the urface includes an instrument vehicle programmed to cycle between predetermined positive and negative buoyancy conditions. A flexible tether having a degree of stiffness and a positive buoyancy factor distributed along its length is connected between a subsurface buoy and the vehicle so as to provide an increasing upward force on the negatively buoyant vehicle as it sinks toward a hovering depth at which the upward force of the buoyant tether balances the negative buoyancy of the vehicle.
    Type: Grant
    Filed: May 15, 1978
    Date of Patent: December 11, 1979
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventor: Richard C. Swenson
  • Controlling the directivity of a circular array of acoustic sensors
    Patent number: 4169257
    Abstract: Forming and directive control of the beam in a circular sonar array without ime delay or phase shift networks. Predetermined weighting coefficients are used to scale sensor outputs that are summed in an add-only processor to provide a weighted sum output characteristic of target position relative to the main receiving axis of the array.
    Type: Grant
    Filed: April 28, 1978
    Date of Patent: September 25, 1979
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventor: David A. Smith
  • High resolution phase shifter beamformer for a cylindrical array
    Patent number: 4166999
    Abstract: A digital beamformer for use with a cylindrical sonar array effects sequeal quadrature pair sampling of the outputs of M array elements used to form each beam, the resulting X and Y samples being digitized and fed alternatively to two serial-in, parallel out shift registers having M stages. M shading modules are responsive to the digitized element output samples in the corresponding stages of the two shift registers to alternately provide M shaded X and Y outputs. A multiple layer digital adder tree sums pairs of adjacent shaded X outputs and adjacent shaded Y outputs to provide the final beamformer output.
    Type: Grant
    Filed: April 10, 1978
    Date of Patent: September 4, 1979
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventor: Jesse J. Brady, III