Patents Represented by Attorney Harvey A. David
  • Patent number: 4462265
    Abstract: A towed system for collecting water samples from a plurality of individual depths for serial presentation to analyzing instruments utilizes a plurality of pressure actuated collection devices separated by vertical hose segments through which water is pumped from a depressor. The flow is modulated to actuate collection device valves so as to introduce the samples in stacked relation.
    Type: Grant
    Filed: February 28, 1983
    Date of Patent: July 31, 1984
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventor: Charles R. Rein
  • Patent number: 4462331
    Abstract: An inflatable bottom structure in an inflatable boat avoids blisters in the xposed, heavy duty outer walls of superimposed upper and lower inflatable floors by a composite wall construction wherein an outer layer of synthetic rubber material, in which a heavy woven synthetic fiber fabric is embedded, and an inner synthetic rubber layer, disposed on a flexible tension strand holding scrim cloth layer, are fused and cured into a unitary wall.
    Type: Grant
    Filed: January 31, 1983
    Date of Patent: July 31, 1984
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventor: William M. McCrory
  • Patent number: 4461146
    Abstract: An augmentor in a turbofan jet engine utilizes a crossover chute assembly direct portions of the bypass fan stream inwardly and portions of the hot core stream outwardly into alternating radial zones of fan and core stream flow; and also annularizes a portion of the core stream around those zones. A plurality of angularly positionable radial vanes causes rotational swirl of the radial zones in one direction to produce buoyant "g" forces that effect rapid inward propagation of a flame front from the annularized zone.
    Type: Grant
    Filed: October 22, 1982
    Date of Patent: July 24, 1984
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventor: Thomas L. DuBell
  • Patent number: 4460987
    Abstract: Variable focus in a sonar system of the time delay beamformer type using a onvexly curved electroacoustic array is achieved by changing the operating frequency.
    Type: Grant
    Filed: April 22, 1982
    Date of Patent: July 17, 1984
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Robert H. Stokes, James F. Lynch
  • Patent number: 4458976
    Abstract: A terminal and connector assembly for effecting end-to-end electrical and chanical coupling of the ends of large diameter cables without need of rotative alignment. End terminals fixed to the cables have axially projecting stems with knobs at the ends that are received in a complementary recess in a connector body and clamped by a keeper that fills the recess and is secured by U-bolts that are also recessed.
    Type: Grant
    Filed: October 14, 1982
    Date of Patent: July 10, 1984
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: John A. Hudson, Warren H. Biegler
  • Patent number: 4449473
    Abstract: An inflatable boat having parallel side sponsons joined by a floor and hag a rigid keelson member includes a demountable transom capable of supporting an outboard motor. The transom is characterized by a motor mount pad connected to the keelson and having folding attachment arms connected to the sponsons.
    Type: Grant
    Filed: October 29, 1982
    Date of Patent: May 22, 1984
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: William W. McCrory, William B. Quigley, William A. Garnett
  • Patent number: 4449209
    Abstract: A continuous transmission FM sonar avoids target ambiguities while utiliz the entire transmitted bandwidth for echo analysis. The sonar is characterized by digital generation of direct and quadrature versions of the transmitted frequency sweep, and balanced modulators responsive thereto to effect complex demodulation of the returned signals prior to analysis, as by a fast fourier transform frequency analyzer for target detection.
    Type: Grant
    Filed: January 11, 1982
    Date of Patent: May 15, 1984
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: William J. Zehner, David P. Skinner
  • Patent number: 4447952
    Abstract: An underwater cutting or penetrating device includes a source of liquid nogen for cooling a workpiece to a cryogenic temperature before impact by an explosively driven member. Attachment by magnet or clamp, and provision for confining the coolant by flexible gasket or boot are described.
    Type: Grant
    Filed: December 27, 1982
    Date of Patent: May 15, 1984
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventor: James H. Elkins
  • Patent number: 4447944
    Abstract: A tubular rivet is formed having flared conical head portions in fastening elation to a plurality of laminates presenting outer surfaces that are inclined to planes normal to a bore through the laminates and having countersinks the axes of which are normal to the respective outer surfaces by means of a mandrel having a conical forming head on a bendable pull shaft extending through an annular anvil having a conical forming surface and adapted to swivel relative to the pull shaft.
    Type: Grant
    Filed: June 16, 1982
    Date of Patent: May 15, 1984
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventor: Robert H. Mohrman
  • Patent number: 4436766
    Abstract: A step-over connection in a monolithic device including laterally spaced alizations having upper surfaces at one or more levels above a supporting substrate and a dielectric layer over one of the metalizations. The connection is in the form of a metal bridge spanning the space between the metalizations, and is formed by successive steps of providing a first resist layer, forming openings therein, etching away an area of dielectric layer, gold plating pillars on the exposed metalization surfaces, sputtering a gold film on the first resist layer and exposed pillars, providing a second resist layer with a pillar connecting bridge pattern opening, gold plating the bridge connection on the exposed sputtered gold film, and removing the resist layers and excess gold film.
    Type: Grant
    Filed: May 15, 1981
    Date of Patent: March 13, 1984
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventor: Ralph E. Williams
  • Patent number: 4437097
    Abstract: A towable, flexible electrode for high density electrical current transfer to sea water is characterized structural improvements including use of hard drawn aluminum wire and a rotatable and slideable aft slip ring to avoid "bird caging", and towing and electrical connectors having a first portion fixed to the electrode and presenting a boss, and a lug portion having a body with a bore receiving the boss and pinned thereto. The electrode features an optional insulating tube for moving the effective length of the electrode rearwardly of a towing platform.
    Type: Grant
    Filed: January 25, 1982
    Date of Patent: March 13, 1984
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventor: John A. Hudson
  • Patent number: 4435045
    Abstract: A built-up glass mirror structure of the type having front and rear plates eld in spaced relation by spacer walls arranged in a cellular pattern has temperature gradients reduced by inclusion of highly reflective coating, such as silvering, of the spacer wall surfaces in each cell in combination with the inwardly facing surfaces at opposite ends of the cells being relatively highly emissive and absorptive of radiant thermal energy.
    Type: Grant
    Filed: April 29, 1982
    Date of Patent: March 6, 1984
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventor: Lawrence Fried
  • Patent number: 4422330
    Abstract: A satellite single axis drag compensation system improves stability and ects damping of movements of a cylindrical proof mass by providing an elongated, perpendicularly magnetized permanent magnet in the core of a current carrying rod that extends coaxially through a central bore of the proof mass, the proof mass being constructed as a composite structure of alternate cylindrical layers of diamagnetic silver and paramagnetic aluminum to reduce magnetic susceptibility thereof.
    Type: Grant
    Filed: May 7, 1981
    Date of Patent: December 27, 1983
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventor: Robert E. Fischell
  • Patent number: 4415996
    Abstract: A method and apparatus are described for holographically generating visual representations of acoustical characteristics of sound sources. A planar array has a lattice of microphone receiving points are disposed such that evanescent wave energy from the sources is detected along with propagating wave energy. The microphone outputs are sampled, resolved into phase and amplitude components, digitized and subjected to fast Fourier transform operations to provide computer graphic display means with holographic reconstruction parameters corresponding to the sources under analysis.
    Type: Grant
    Filed: June 9, 1981
    Date of Patent: November 15, 1983
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Julian D. Maynard, Earl G. Williams
  • Patent number: 4398275
    Abstract: A device for producing a varying frequency sine wave synthesized so that frequency is swept linearly with time for use in a continuous transmission FM sonar. A crystal clock, divider and a 16 bit digital output sweep counter produce 2.sup.16 counts for each sweep period T.sub.s. The 2.sup.16 counts are applied to a 16 bit digital to analog converter to provide a highly linear voltage ramp (the smoothed result of 2.sup.16 steps). The ramp is converted to a proportional frequency which is applied to a 5 bit digital counter to access a read only memory programmed to provide a digital output representing points along a sine wave. The memory output is applied to a digital to analog converter to produce a voltage output that is a 32 stepped approximation of a sinewave at a frequency which increases betweeen f.sub.1 and f.sub.2 with the linearity of the ramp voltage. A filter smoothes the output.
    Type: Grant
    Filed: October 2, 1981
    Date of Patent: August 9, 1983
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventor: William J. Zehner
  • Patent number: 4394689
    Abstract: A multiple channel cathode ray tube video display provides for adjusting brightness of the displayed channel by a single input control, such a trackball or keyboard, to a computer that generates a channel coded binary word that is held in one of a plurality of memory latches, each corresponding to a channel. The binary word is converted to an analog brightness signal that controls the gain of a corresponding one of a plurality of video signal amplifiers.
    Type: Grant
    Filed: July 13, 1981
    Date of Patent: July 19, 1983
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Edward L. Wallace, Theodore Wright
  • Patent number: 4388593
    Abstract: A coil device for use by divers in subjecting an elongate underwater strure member to a magnetic field for inspection purposes includes a framework supporting a winding having first and second coaxial coils of predetermined coil diameter that lie in substantially parallel planes separated axially by a distance at least twice the coil diameter, the coils being electrically connected in series so as to generate magnetic fields of opposite polarity. The coils, connecting conductors, and framework are adapted to be spread open and closed around the member to be inspected.
    Type: Grant
    Filed: November 13, 1980
    Date of Patent: June 14, 1983
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventor: John Mittleman
  • Patent number: 4385522
    Abstract: A pit depth gauge for use as an accessory to an underwater ultrasonic probe omprises two resiliently biased, freely flooded telescoping members a first of which has a first end wall adapted to ride on a surface to be inspected and a second of which has a second end wall adapted to be connected to the probe with the probe transducer in registration with an acoustic energy port. A stylus is fixed to the second member for axial movement with the transducer toward the first end wall as the stylus enters a pit, whereby the length of an acoustic water path is related to the pit depth.
    Type: Grant
    Filed: September 28, 1981
    Date of Patent: May 31, 1983
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventor: John Mittleman
  • Patent number: 4384690
    Abstract: A missile thrust vector control system using fixed valves and nozzles in n numbers, as 4 or 8, mounted so that the thrust vectors operate at preselected angles to the frame and are pulse modulated in certain combinations to produce thrust vectors the sums of which provide desired deflections in pitch, yaw, and roll, without altering axial propulsion thrust.
    Type: Grant
    Filed: March 6, 1981
    Date of Patent: May 24, 1983
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventor: Rolf K. Brodersen
  • Patent number: 4377807
    Abstract: A rotary shaft position measurement system using digital position detectors roviding coarse and fine binary word readouts having four overlapping bits all of which are having subtractively compared to provide command signals that are used to correct the non-overlapping portion of the coarse word prior to combining with the fine word. The comparator utilizes a binary four bit full adder in combination with coarse word input inversion, and direct and inverted application of the carryout and .SIGMA.4 outputs to first and second AND gates to generate coarse word correction commands.
    Type: Grant
    Filed: September 10, 1981
    Date of Patent: March 22, 1983
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventor: Elzie H. Freeman