Patents Represented by Attorney A. A. Dicke, Jr.

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  • Optical system
    Patent number: 4389115
    Abstract: Optical system provides a uniform, well-collimated beam particularly for the exposure of photoresist on integrated circuit boards. The well-collimated beam is produced in a short beam path through the use of a series of mirrors, including concave mirrors and an integrator mirror to produce reliable exposure characteristics at the exposure focal plane. Preferably, a beam splitter is provided so that the focal plane is illuminated on both sides for concurrent exposure of both sides of the board.
    Type: Grant
    Filed: August 6, 1981
    Date of Patent: June 21, 1983
    Inventor: Thomas A. Richter
  • Filament dispenser cathode
    Patent number: 4388560
    Abstract: Thermionic cathode 12 for a plasma ion source 10 has tungsten wire 64 advanced by wheels 56 from supply 50 to take-up spool 58. In chamber 48, the active cathode region 64 acts with anode 16 to supply electrons for ionizing a fuel gas so the ions are discharged from slit 18 for acceleration, separation and implantation.
    Type: Grant
    Filed: May 26, 1981
    Date of Patent: June 14, 1983
    Assignee: Hughes Aircraft Company
    Inventors: William P. Robinson, Hugh McNulty, Jr., Robert L. Seliger, Weldon S. Williamson
  • Method of laser enhanced thermal diffusion
    Patent number: 4382978
    Abstract: There is disclosed a method by which a three-dimensional horn structure at the end of a channel waveguide in a dielectric chip is produced to facilitate coupling of a fiber optic waveguide by butt coupling techniques. The three-dimensional horn structure is fabricated by localized surface diffusion resulting from superposing a CO.sub.2 laser heating beam on the desired enlarged area while diffusion of the waveguide is taking place or after it has taken place in a controlled ambient furnace atmosphere.
    Type: Grant
    Filed: November 24, 1980
    Date of Patent: May 10, 1983
    Assignee: Hughes Aircraft Company
    Inventor: Bor-Uei Chen
  • Demand flow cryostat
    Patent number: 4381652
    Abstract: Demand flow cryostat 10 has an expansion nozzle 24 from which flow is controlled by valve needle 32. Bellows 34 regulates flow to maintain substantially constant temperature in the cooled space adjacent interior surface 26. Guide tube 38 and felt 44 control flow of the mixed liquid-vapor cryogen to stabilize temperature at the electronic device 30 which is cooled by the cryostat.
    Type: Grant
    Filed: January 15, 1982
    Date of Patent: May 3, 1983
    Assignee: Santa Barbara Research Center
    Inventor: Wallace Y. Kunimoto
  • Directional diffusing screen
    Patent number: 4372639
    Abstract: A method and apparatus for presenting real-time information for viewing is disclosed wherein a projection lens projects an image of a liquid crystal display onto the surface of a holographic optical element diffuser. The liquid crystal display is driven so as to contain real-time information and is illuminated by substantially monochromatic light. The diffuser diffracts the real-time information to a pupil at a viewing focal plane with preselected illumination intensity so that the real-time information can be viewed in diffuse form anywhere across the pupil.
    Type: Grant
    Filed: June 3, 1981
    Date of Patent: February 8, 1983
    Assignee: Hughes Aircraft Company
    Inventor: Kenneth C. Johnson
  • Method and assembly for holographic exposure
    Patent number: 4367911
    Abstract: Assembly 10 is formed of base and cover plates 12 and the 16 with dichromated gelatin holographic exposure layer 20 therebetween. Liquid monomer is placed in the assembly and is polymerized to solid polymer layer 22 to form a solid assembly for holographic exposure of dichromated gelatin layer 20. After exposure, heating permits removal of cover plate 16 and polymer layer 22 for subsequent development of the latent image in dichromated gelatin holographic exposure layer 20.
    Type: Grant
    Filed: July 14, 1980
    Date of Patent: January 11, 1983
    Assignee: Hughes Aircraft Company
    Inventor: Andrejs Graube
  • Blood-air separator and filter
    Patent number: 4368118
    Abstract: The blood-air separator is for use in the extracorporeal blood bypass during cardio-pulmonary surgery. Air bubbles are separated from the recirculating blood stream by centrifugal force and buoyancy after the stream has left the oxygenator and before it returns to the patient. Separation is accomplished by imparting circular motion to the bloodstream within the separator at a point where air bubbles can move upward and inward, and blood liquid outward and downward. Curved vanes in the blood flow stream cause the circular blood motion.
    Type: Grant
    Filed: September 15, 1980
    Date of Patent: January 11, 1983
    Inventor: George G. Siposs
  • Cable banding lock ring
    Patent number: 4361937
    Abstract: When a submerged pump is supported on its discharge pipe in a deep well, such as an oil well, the electric power supply cable to the pump is strapped to the side of the discharge pipe. The cable banding lock ring engages around the strap between the cable and discharge pipe to increase the wrap of the strap around both the power supply cable and the discharge pipe.
    Type: Grant
    Filed: November 28, 1980
    Date of Patent: December 7, 1982
    Inventor: C. Arthur Davis
  • Apparatus and method for electronic damping of resonances
    Patent number: 4352481
    Abstract: Gimbal ring 32 has torquer positioner 34 and position detector 36 connected by servo loop 38, 40. Vibration sensor 52 on ring 32 provides ring vibration signals to amplifier shifter 54, 58 and the resultant signals are added to the servo loop at amplifier 40 to damp out the detected vibration.
    Type: Grant
    Filed: March 13, 1980
    Date of Patent: October 5, 1982
    Assignee: Hughes Aircraft Company
    Inventor: Robert L. Forward
  • Ion implantation system
    Patent number: 4346301
    Abstract: A plurality of beam generating units 76, 78, 80 and 82 each produces separated rectangular ion beams for implantation onto a targets 52 and 54 rotatively moving therepast. Each rectangular footprint is long in the direction of motion and is scanned transversely to the direction of motion. A plurality of beam generating units can be positioned adjacent to each other to multiply implant targets because of the compact structure of the separated ion source.
    Type: Grant
    Filed: March 19, 1981
    Date of Patent: August 24, 1982
    Assignee: Hughes Aircraft Company
    Inventors: William P. Robinson, Robert L. Seliger
  • Directed flow bubble trap for arterial blood
    Patent number: 4344777
    Abstract: The arterial blood filter of this invention is for extra-corporeal bypass during cardio-pulmonary surgery. It has an internal divergent blood flow path from the inlet to smoothly reduce blood flow velocity to permit separation of air bubbles with minimum trauma to blood cells. The upper portion of the blood filter housing permits collection of air bubbles and permits their withdrawal. The inlet and outlet connections to the filter are both on the bottom to ease draping of the connecting tubes.
    Type: Grant
    Filed: January 7, 1980
    Date of Patent: August 17, 1982
    Inventor: George G. Siposs
  • Thermal coupling structure for cryogenic refrigeration
    Patent number: 4344302
    Abstract: Thermal coupling structure 40 has a tubular collar 42 which embraces the cold end of cold finger 14. Fingers 44 on collar 42 resiliently engage within inner wall 24 of dewar 22 so that heat is conducted from device 32 to be cooled through this inner wall 24 to fingers 44, collar 42 to cold finger 16.
    Type: Grant
    Filed: June 8, 1981
    Date of Patent: August 17, 1982
    Assignee: Hughes Aircraft Company
    Inventors: Harold M. Jarrett, Jr., Thomas P. Cotter
  • Expanding helical seal for pistons and the like
    Patent number: 4333661
    Abstract: A seal 34 formed of a resilient helical coil 42 which is stressed at its small end to form a stationary seal in its groove 36 and stressed to unwind at its large end 44 to form a dynamic seal against the cylinder wall 22. A helical coil 56 of low friction material can be interleaved to supply dry lubricant.
    Type: Grant
    Filed: December 5, 1980
    Date of Patent: June 8, 1982
    Assignee: Hughes Aircraft Company
    Inventor: David A. Merrell
  • Screw compressor-expander cryogenic system with magnetic coupling
    Patent number: 4328684
    Abstract: Cryogenic refrigeration system 10 employs a screw compressor 72 and a screw expander 70 wherein one rotor of the compressor and one rotor of the expander is mechanically driven, including a magnetic coupling 50, 52 between the compressor and expander rotors. The other compressor rotor and other expander rotor is driven only by the connected rotor.
    Type: Grant
    Filed: December 10, 1979
    Date of Patent: May 11, 1982
    Assignee: Hughes Aircraft Company
    Inventor: Bruno S. Leo
  • Locking mechanism
    Patent number: 4325240
    Abstract: Locking mechanism has both a key setting multiple tumblers to unique positions and a combination wheel for each tumbler so that opening of the lock requires setting each wheel to correspond to its tumbler position. For a single lock, different keys require different combinations. A mechanical recorder records the wheel positions with each lock opening so that all combinations used for access can be read, if necessary.
    Type: Grant
    Filed: September 17, 1979
    Date of Patent: April 20, 1982
    Assignee: Denis V. Bosley
    Inventor: Derek J. Gable
  • Hydrazine thruster
    Patent number: 4324096
    Abstract: Hydrazine thruster 30 minimizes impulse bit degradation by making the hydrazine more reactive with the catalyst 66 by using higher temperature hydrazine and smaller catalyst grain, and also concentrates the injected hydrazine in smaller catalyst volume 66 so that heat released aids decomposition of a greater quantity of injected hydrazine.
    Type: Grant
    Filed: April 23, 1979
    Date of Patent: April 13, 1982
    Assignee: Hughes Aircraft Company
    Inventor: M. Edmund Ellion
  • Thermal interconnection
    Patent number: 4322776
    Abstract: Spring 52 mounts on cold plate 12 to urge thermal conductive layers 82 against flange 20 on cold plate 12. Spring has a plurality of pressure flanges, one corresponding to each cold plate flange so that a unitary spring structure can be quickly assembled on the cold plate.Thermal interconnection is expected to be used on all standard and improved standard electronic modules. It is being designed into ANSQS-53.
    Type: Grant
    Filed: August 4, 1980
    Date of Patent: March 30, 1982
    Assignee: Hughes Aircraft Company
    Inventors: Frederick D. Job, Charles E. Eberly
  • Cross-field plasma mode electric conduction control device
    Patent number: 4322661
    Abstract: Crossed-field plasma mode electric conduction control device 10 has an interelectrode space 16 between anode 12 and cathode 14 in which is produced a magnetic field 38 by coil 28. Electrons produced at region 46 travel through the crossed-fields to region 48, with cascading ionization to produce an electrically conductive plasma. The electrons are lost at region 48 and plasma density is controlled by magnetic field strength to control magnitude of interelectrode current.
    Type: Grant
    Filed: December 26, 1979
    Date of Patent: March 30, 1982
    Assignee: Huges Aircraft Company
    Inventor: Robin J. Harvey
  • Liquid metal ion source
    Patent number: 4318029
    Abstract: Liquid metal ion source has cylindrical ceramic tube 12 embraced by strip heater 20 which is held in place by ceramic bushing 26. Apex 28 of the strip heater contains the ion source fuel metal and is pierced by needle 34 having sharp tip 36. Upon heating and electrical bias with respect to a coaxial extraction electrode, tip 36 emits ions.
    Type: Grant
    Filed: May 12, 1980
    Date of Patent: March 2, 1982
    Assignee: Hughes Aircraft Company
    Inventor: Jerg B. Jergenson
  • Liquid metal ion source
    Patent number: 4318030
    Abstract: Liquid metal ion source has cylindrical ceramic body 12 engaged by one leg of hook shaped strip heater 20 which is held in place by ceramic bushing 24. Apex 18 of the strip heater contains the ion source fuel metal and is pierced by needle 22 having sharp tip 30. Upon heating by heater current flow through needle 22 and heater leg 14 and electrical bias with an extraction electrode, tip 30 emits ions.
    Type: Grant
    Filed: May 12, 1980
    Date of Patent: March 2, 1982
    Assignee: Hughes Aircraft Company
    Inventor: Jerg B. Jergenson