Patents Represented by Attorney Harvey David

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  • Optically coupled differential data link
    Patent number: 4569059
    Abstract: A binary digital data link includes a differential transmitter, a shielded wire pair transmission line, and a receiver having electro-optic isolation utilizes input logic transistorized switching to control current flow direction in the wire pair, the receiver being responsive thereto to provide electrically isolated binary data output.
    Type: Grant
    Filed: May 25, 1984
    Date of Patent: February 4, 1986
    Inventor: Franklin H. Fish
  • Diver's umbilical quick-disconnect device
    Patent number: 4555130
    Abstract: A quick-disconnect device for coupling segments of a diver's umbilical ho includes separable rectangular bodies carrying complementary hose couplings spaced therealong. The bodies, which have nested rim and reduced portions, are biased toward separation by a rectangular, flat-type spring and releasable retained against separation by a retractable retaining pin extending diagonally therethrough and normally locked against retraction by partial rotation.
    Type: Grant
    Filed: April 1, 1983
    Date of Patent: November 26, 1985
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventor: D. Wayne McClain
  • Multi-port dump combustor
    Patent number: 4539811
    Abstract: A four-ported dump combustor is designed for use with a ramjet engine and ovides high combustion efficiency and pressure recovery for length-to-diameter (L/D) ratios of between 1.3 and 4.4, over a range of operating conditions.
    Type: Grant
    Filed: January 27, 1982
    Date of Patent: September 10, 1985
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Lawrence A. Dale, Stephen E. Grenleski, Jr., James L. Keirsey, Charles E. Stevens
  • Safety mooring line
    Patent number: 4534262
    Abstract: An improved safety mooring line of the type having an inner high stretch ety line and an outer high strength, low elongate synthetic fiber strength member also has an armor layer of a high strength, heat resistant synthetic fiber material braided over the safety line underneath the strength member. The armor layer is braided with a high braid angle so that it can elongate when the strength member parts, yet insulate the safety line from the heat and flailing ends of the strength member resulting from the released energy of parting.
    Type: Grant
    Filed: April 1, 1983
    Date of Patent: August 13, 1985
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventor: Richard C. Swenson
  • Two stage manual air pump
    Patent number: 4508490
    Abstract: A hand pump that is operable selectively as a large volume low pressure air ump or a smaller volume higher pressure pump has a small diameter cylinder reciprocable in a large diameter cylinder and carrying a large diameter plunger and a small diameter plunger reciprocable in the small diameter cylinder. Wire bail type latches are operable to select the mode of pump operation upon reciprocation of the pump handle.
    Type: Grant
    Filed: January 10, 1984
    Date of Patent: April 2, 1985
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Joe D. Ramirez, Steven E. Gorin, William A. Garnett
  • Membrane valve for dry diver's apparel
    Patent number: 4503565
    Abstract: A water excluding vent valve for insulated gloves or other portions of a er's dry suit utilizes a vent control element including a microporous membrane disposed in obturating relation to an opening in the shell of the glove or other article. The membrane is laminated between protective layers of woven synthetic fabric, and a retaining means permitting replacement of the control element is described.
    Type: Grant
    Filed: February 17, 1983
    Date of Patent: March 12, 1985
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Maxwell W. Lippitt, Jr., Marshall L. Nuckols
  • Inflatable bottom construction for inflatable boat
    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
  • Multiple depth water sampling system
    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
  • Mixed flow swirl augmentor for turbofan engine
    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
  • Variable focus sonar with curved array
    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
  • Terminal and connector assembly for electrical cables
    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
  • Inflatable boat with demountable transom
    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
  • Device for underwater cryogenic cutting
    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
  • Utilization of entire transmitted bandwidth in continuous transmission FM sonar
    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
  • Method of forming a tubular rivet in fastening relation to a plurality of laminates
    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
  • Buoyant electrode
    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
  • Plated bridge step-over connection for monolithic devices and method for making thereof
    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
  • Built-up mirror with reduced temperature gradient
    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
  • Low susceptibility proof mass for a single axis drag compensation system
    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
  • Closed loop binary digital communication system
    Patent number: H62
    Abstract: A closed loop system for communication of binary data utilizes master or a sources and slave or data sink stations, each including a transmit buffer, a three-state transmitter, a receiver, a comparator, a three-state receiver, a receive buffer, a timer, a filter and a local controller, with the transmitter of each station connected by a transmission path to the receiver of the other station. Binary data bits are separated by spaces and bits and spaces are transmitted singly from the source station, received and retransmitted back to the source station by the sink station, with each retransmitted bit or space being compared at the source station with its original transmission for verification before a succeeding bit or space is transmitted.
    Type: Grant
    Filed: May 25, 1984
    Date of Patent: May 6, 1986
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventor: Barry D. Sanderson