Patents Represented by Attorney Philip Schneider

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  • Spin rate timing system
    Patent number: 4161780
    Abstract: Apparatus for use in determining the orientation of a spinning spacecraft d for controlling the attitude motion thereof. In response to commands from an external processor, the apparatus enables a selected thruster at a commanded time delay after a solar-or earth-sensor reference pulse and fires the thruster a commanded number of times. The time difference between various sensor inputs is measured to determine spin rate and other data which is used by the external processor in calculating the firing sequence of the thrusters.
    Type: Grant
    Filed: June 23, 1978
    Date of Patent: July 17, 1979
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Louis R. Rudolph, Woodrow W. Ewen, II
  • Tapered velocity electro-optical waveguide switch
    Patent number: 4160579
    Abstract: A four-part electro-optical switch for switching optical radiation from one aveguide to another. Parallel waveguides are embedded in the surface of a substrate and provided with separating ends for transmitting radiation through the waveguides. Curved electrodes on the outer side of each waveguide in cooperation with a central electrode and separate voltage sources change the electro-optic properties of the waveguide such that radiation may be switched from one waveguide to the other when the voltage source is in the "on" state.
    Type: Grant
    Filed: May 3, 1978
    Date of Patent: July 10, 1979
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventor: A. Fenner Milton
  • Method for the control of mosquitos by the use of film-forming materials
    Patent number: 4160033
    Abstract: A method of controlling mosquitos by adsorbing onto the surface of a body of water suitable for breeding mosquitos a monomolcular or duplex film of an organic material which reduces the surface tension of the body of water to 30 dynes/cm or less.
    Type: Grant
    Filed: January 31, 1977
    Date of Patent: July 3, 1979
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: William D. Garrett, William R. Barger
  • Iron-doped indium phosphide semiconductor laser
    Patent number: 4158207
    Abstract: An iron-doped indium phosphide or gallium arsenide semiconductor laser. The emiconductor material is doped when formed by uniformly distributing transition metal ions such as iron throughout the semiconductor. The concentration of the iron ions is from about 1.times.10.sup.15 to about 1.times.10.sup.18 ions per cubic centimeter, but is limited only by the solubility of iron indium phosphide or gallium arsenide. It has been determined that the greater the concentration of ions, the easier the laser emission is obtained. At liquid helium temperature, the iron-doped semiconductor laser will operate at a wavelength near 3 microns.
    Type: Grant
    Filed: March 27, 1978
    Date of Patent: June 12, 1979
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Stephen G. Bishop, Bruce D. McCombe, Wulf H. Koschel
  • Fluorinated network polymers
    Patent number: 4157358
    Abstract: A random fluorinated polymer of the general equation: ##STR1## wherein x is an integer from 1 to 4, y is an integer from 0 to 4, z is 1 more, R' is selected from the group consisting of the 1,3 and the 1,4 isomers of --OC(CF.sub.3).sub.2 .phi.C(CF.sub.3).sub.2 O--, R" is selected from the group consisting of the cis and trans isomers of --O(CF.sub.3).sub.2 CCH.sub.2 CH.dbd.CHC(CF.sub.3).sub.2 O--, and R is either R' or R"; and epoxy resins and urethane resins prepared therefrom.
    Type: Grant
    Filed: October 13, 1978
    Date of Patent: June 5, 1979
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Donald E. Field, James R. Griffith
  • Rectangular cell honeycomb chemical converter-heat exchanger
    Patent number: 4155981
    Abstract: A chemical converter-heat exchanger formed by a plurality of rows of paral, horizontal channels in a housing through which an inflowing fluid is heated. Vertical columns of horizontal channels connect alternately with an inlet and outlet manifold and carry the fluid back and forth horizontally in vertical columns of horizontal channels so that the inflowing fluid is partially heated by the outflowing fluid. Means are provided so that the bottom face of the housing is heated by the sun which in turn heats the fluid as the fluid passes through the bottom channels in the housing. A plurality of units may be mounted together to increase the output.
    Type: Grant
    Filed: February 9, 1978
    Date of Patent: May 22, 1979
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventor: Talbot A. Chubb
  • Single-fiber duplex coupler
    Patent number: 4149770
    Abstract: A bidirectional optical communication system which includes a transmission ine which directs radiation onto a reflective surface through which a smaller-diameter fiber is inserted. The smaller-diameter fiber directs radiation into the larger-diameter fiber for transmission away from the reflective surface simultaneous with radiation transmitted through the larger-diameter fiber toward the reflective surface. A reflective surface and small fiber may be at each end of the larger-diameter fiber for bidirectional operation.
    Type: Grant
    Filed: November 21, 1977
    Date of Patent: April 17, 1979
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: A. Fenner Milton, Carl A. Villarruel
  • High-power microwaves from a non-isochronous reflecting electron system (NIRES)
    Patent number: 4150340
    Abstract: A reflecting electron tube for producing high-power, high-frequency, monoomatic microwave pulses includes an anode which produces little or no ion flux when struck by electrons emitted from a cathode, and requires no applied, external magnetic field. An anode support holding the anode and a cathode shank which supports the cathode are positioned within a vacuum chamber such that the anode is closely spaced from the cathode. The anode support is connected to a pulsed high-voltage supply located external to the chamber. The anode is formed from a material which does not produce a significant amount of ion flux but does permit electrons emitted from the cathode to oscillate through the anode. Electrons oscillating in phase bunch together within the potential well of the system and emit microwave radiation.
    Type: Grant
    Filed: March 22, 1978
    Date of Patent: April 17, 1979
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Christos A. Kapetanakos, Phillip A. Sprangle, Redge A. Mahaffey, Jeffry Golden
  • Electro-chemical sensors for gas detection in electron tubes
    Patent number: 4147515
    Abstract: An electro-chemical gas sensor for use in electron tubes comprising a crylline body of BaO formed on a non-interacting (chemically and electrically) substrate and at least two electrodes. The change in conductivity of the barium oxide upon exposure to tube gases may be used to determine the type and quantity of gases contaminating the electron emitter and estimate changes in the emitter's work function or electron emission capability due to gas contamination.
    Type: Grant
    Filed: December 22, 1977
    Date of Patent: April 3, 1979
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: George A. Haas, Richard F. Greene, Arnold Shih
  • Investigation of near-surface electronic properties in semiconductors by electron beam scanning
    Patent number: 4144488
    Abstract: An electron-beam scanning system for investigating the nonuniformity of (1) he work function, (2) the position of the conduction-band edge with respect to the Fermi level, and (3) the electron affinity at the surface of a single-crystal semiconductor. A small-diameter, low-energy electron beam is scanned over the surface to be investigated. The current collected by the surface for electron energies in the retarding-field region is related to the work function of the surface, whereas the current collected by the surface for electron energies in the accelerating-field region is related to the position of the conduction-band edge. The electron affinity is related to the combination of these relationships. Variations in the current collected by the surface for appropriately selected electron energies are used to provide a visual display of variations in these quantities.
    Type: Grant
    Filed: December 22, 1977
    Date of Patent: March 13, 1979
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: George A. Haas, Arnold Shih, Richard E. Thomas
  • Xenon bromide (XeBr) excimer laser
    Patent number: 4143336
    Abstract: A Xenon Bromide (XeBr) excimer laser is made by electron beam excitation over a range of from 10-3000 torr xenon with 0.5-4% Br.sub.2. Xe* generated by a high-energy electron beam reacts with Br.sub.2 to produce XeBr* which undergoes a bound-free transition resulting in stimulated emission on the transition XeBr*.fwdarw.Xe + Br + hv (230-360 nm) where* represents a low lying electronically excited state.
    Type: Grant
    Filed: March 3, 1976
    Date of Patent: March 6, 1979
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Stuart K. Searles, George A. Hart
  • Charged-particle beam acceleration in a converging waveguide
    Patent number: 4143299
    Abstract: An electron beam and collective ion-electron beam accelerating apparatus in hich a relativistic electron beam and ions moving with it are accelerated in speed by passing them through a converging waveguide (i.e., a drift tube) of gradually decreasing diameter. The ions are separated from the electrons upon leaving the waveguide.
    Type: Grant
    Filed: February 22, 1978
    Date of Patent: March 6, 1979
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Phillip A. Sprangle, Adam T. Drobot, Wallace M. Manheimer
  • Method for determining conduction-band edge and electron affinity in semiconductors
    Patent number: 4142145
    Abstract: A method which utilizes low-energy electron reflections to determine the ctron affinity and to simultaneously locate the position of the conduction-band edge with respect to the Fermi level at the surface of a single-crystal semiconductor. A beam of very-low-energy electrons (<10eV) is directed onto the surface of the semiconductor and the reflection pattern (beam energy v. current collected by the semiconductor) is analyzed using a kinematical approximation for the interference phenomena.
    Type: Grant
    Filed: December 22, 1977
    Date of Patent: February 27, 1979
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: George A. Haas, Arnold Shih, Richard E. Thomas
  • Atmospheric radon monitor
    Patent number: 4140912
    Abstract: Apparatus for monitoring the radioactivity of airborne particulate matter automatically and continually filtering discrete samples of air to collect the airborne particulate matter on a filter tape and automatically detecting, counting and recording the beta emissions therefrom to determine the atmospheric radon concentration.
    Type: Grant
    Filed: July 25, 1977
    Date of Patent: February 20, 1979
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: David J. Bressan, Reginald E. Larson
  • Axisymmetric stabilized liner implosion system
    Patent number: 4140057
    Abstract: A payload (e.g., a plasma, gas, magnetic field) having an initial energy density is confined within an implosion chamber which also contains a rotating liquid liner having an approximately cylindrical inner surface due to the rotational forces. An annular piston, disposed in the implosion chamber, is free to move parallel to the axis of rotation and has a surface in contact with a portion of the rotating liner. Motion of the piston against the liner (due to a pulsed external driving means) causes the inner surface of the liner to implode radially in said implosion chamber, thereby compressing the initial energy density to a higher energy density. The inner surface of the liner remains stable throughout compression due to the rotation of the liner. The other surfaces of the liner are stabilized by contact with the implosion chamber or the piston.
    Type: Grant
    Filed: May 2, 1978
    Date of Patent: February 20, 1979
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Peter J. Turchi, Daniel J. Jenkins
  • Hydrogen isotope separation
    Patent number: 4139439
    Abstract: A method of separating isotopes of hydrogen which comprises subjecting a ture of methane and isotopes of hydrogen in a methane to hydrogen mole ratio from about 1000:1 to about 1:10 to a glow electrical discharge from about 10.sup.-3 to about 50eV per hydrogen bond at a temperature from about 50.degree. K. to about 310.degree. K. and at a pressure from about 0.3 Torr to the pressure at which arcing occurs.
    Type: Grant
    Filed: May 31, 1978
    Date of Patent: February 13, 1979
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Thomas J. Manuccia, Christine E. Geosling
  • Remotely operated, X-Y translation slide with stationary motors
    Patent number: 4138082
    Abstract: Apparatus for providing remote-operated two dimensional translation in a tical plane in an accurate and reliable manner for use in a laboratory sampling system, comprises two translation stages with a moveable slide affixed to one of such stages, mounted so as to be independently translatable in orthogonal directions in the vertical plane and are coupled to an integral drive system in such a manner so as to result in a compact unit.
    Type: Grant
    Filed: May 27, 1977
    Date of Patent: February 6, 1979
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventor: Mohammad Fatemi
  • Photographic image enhancement by photofission
    Patent number: 4137461
    Abstract: A method for producing a replica image with enhanced contrast from an orial photographic image comprising toning the original photographic negative with a stable photofissionable isotope material, placing the toned negative in contact with a replication plate made from a transparent material in which damage tracks left by fission fragments may be made visible by some process such as etching, irradiating the toned negative with high-energy X-rays, and etching the replication plate to render the damage tracks visible and thereby produce the replica image.
    Type: Grant
    Filed: November 16, 1977
    Date of Patent: January 30, 1979
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventor: Kenneth M. Murray
  • Energy fluence meter for X-rays
    Patent number: 4136281
    Abstract: An instrument for measuring the energy fluence of a pulsed X-ray field inendent of the energy of the photons constituting the field. Separate X-radiation absorption assemblies made of particular materials include separate X-radiation detector means therein and are positioned relative to each other to provide output signals proportional to the energy fluence of the incident radiation. This device will operate over an energy fluence rate range from 10.sup.4 ergs/cm.sup.2 to 10.sup.8 ergs/cm.sup.2 delivered in less than one second.
    Type: Grant
    Filed: October 12, 1977
    Date of Patent: January 23, 1979
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventor: Kenneth M. Murray
  • 14 And 16 micron, optically pumped, gas dynamic CO.sub.2 laser
    Patent number: 4136317
    Abstract: An electric discharge gas-dynamic laser (EDGDL) providing laser action in CO.sub.2 at 16 microns between the (02.degree.0) and (01'0) levels as well as between the (10.degree.0) and (01'0) levels at 14 microns. A 9.mu. or 10.mu. saturating pulse equilibrates the (001) level with either the (02.degree.0) or (10.degree.0) level and creates the 14.mu. or 16.mu. inversion. Extraction efficiencies of 50% have been achieved. Repetition frequencies of 200Hz have been achieved using a repetitively Q-switched cavity.
    Type: Grant
    Filed: April 13, 1977
    Date of Patent: January 23, 1979
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Joseph A. Stregack, Thomas J. Manuccia