Rods Or Wire Form Cage Or Hollow Post Patents (Class 343/896)
  • Patent number: 11387741
    Abstract: Apparatus and associated methods relate to a Meissner Engine Regulator (MER) that includes a superconducting inductive element (SCIE) supplying a secondary winding coupled to recirculate excess energy from the SCIE core to a feedback winding controlled to regulate the SCIE magnetic field strength to be substantially at or below a critical magnetic field strength (HC). In an illustrative example, Hc may be the maximum field strength to obtain the Meissner effect in the SCIE. In some examples, the SCIE may be wound with n-filar windings. The SCIE may further include a first primary electrically coupled to and powered by a DC-to-AC power inverter, for example. The secondary winding may operate to remove excess energy from the magnetic field in the SCIE, for example, and store it in a capacitor. The SCIE may be supercooled, with liquid nitrogen, for example, such that the MER reaches electrical efficiencies approaching 100%.
    Type: Grant
    Filed: March 28, 2018
    Date of Patent: July 12, 2022
    Inventor: Chauncey Bigelow Sayre
  • Patent number: 8599098
    Abstract: The present invention is directed to an antenna system comprising two rigid portions, an electrical conductor located between the two rigid portions, and a connector that extends between the two rigid portions and: (a) allows the position of one of the rigid portions relative to the other rigid portion to be altered when a force is applied to one of the rigid portions, such as when one of the rigid portions encounters an obstacle, and (b) maintains the altered position until a subsequent force is applied. In one embodiment, the connector comprises a ball-and-socket joint with the spring force produced by the socket causing sufficient frictional force between the ball and socket so that the position relationship of the ball to the socket is maintained when only gravity is being applied to the rigid portions and the connector but allowing the positional relationship to be altered when an additional force is applied.
    Type: Grant
    Filed: April 5, 2011
    Date of Patent: December 3, 2013
    Assignee: FIRST RF Corporation
    Inventor: Robert J. Marshall
  • Patent number: 8289224
    Abstract: The invention relates to a structure comprising an enclosed antenna system, and a radome (18), where the structure comprises: a tower (B, C), comprising a main tube (2) fastened on a bottom flange (7) of the tower (B, C), a smaller-diameter tube (5) which hooks within the main tube (2) and further is fastened on an upper flange (8) of the tower (B, C), a nut (6) fastened on the other end of said smaller-diameter tube (5), a rod (3) which screws on within the nut (6), a shaft (4) fastened at the bottom part of the rod (3) and terminating in a nut (1), where the radome (18) is fastened on the upper flange (8) of the tower (B,C), thus making it possible to check the antennas mounted on the main tube (2) by that when screwing the nut (1), the radome (18) is arranged to move upwards, making the bottom of the antenna system accessible.
    Type: Grant
    Filed: November 16, 2006
    Date of Patent: October 16, 2012
    Assignee: Powerwave Technologies, Inc.
    Inventor: Evangelos Halkiopoulos
  • Patent number: 8253636
    Abstract: An improved antenna array (100) comprises a set of array elements (102 a-p) electromagnetically coupled to a transmission line. The transmission line comprises a live conductor (122) and a return conductor, and the live conductor (122) is terminated by a direct connection to the return conductor. An input signal fed to the live conductor (122) is radiated by the array elements (102 a-p) and the antenna array (100) is arranged such that any portion of the input signal reaching the termination is reflected at the termination so as to form a reflected signal that superimposes with the input signal to produce a predetermined farfield radiation pattern.
    Type: Grant
    Filed: November 28, 2006
    Date of Patent: August 28, 2012
    Assignee: Bae Systems PLC
    Inventors: Peter Gardner, Peter Scott Hall, Ee Lee, Teck Yiau Lee, Bruno Pirollo, David Gunton
  • Patent number: 7965488
    Abstract: An antenna is disclosed to efficiently ionize the atmosphere for the purpose of reducing the aerosol counts, and therefore the number of poluted particles in suspension in the atmosphere, by deposition to ground. The antenna includes peripheral nodes and a central node. Each of the peripheral nodes is connected to adjacent peripheral nodes through peripheral spokes. The peripheral nodes are also connected to the central node through radial spokes. Electric power is applied to the peripheral spokes and the radial spokes causing the antenna to charge the atmosphere through the emission of ions. The antenna minimizes an attenuation factor that reduces ionization efficiency and reduces the land requirements for its installation.
    Type: Grant
    Filed: November 9, 2007
    Date of Patent: June 21, 2011
    Assignee: Ionogenies Corp.
    Inventor: Phillip Kaufman
  • Publication number: 20100013728
    Abstract: An antenna core design. An antenna assembly is provided for use in tracking and locating equipment used to track and locate tools with underground drilling systems. The antenna assembly comprises an elongate core, a plurality of metal strips supported on an external surface of the core, an insulating material adapted to insulate each of the plurality of metal strips from the other metal strips and the core, and a wire disposed around the external surface of the strips. Alternatively the antenna assembly comprises an elongate core, an insulating material disposed around a perimeter of the core, and a wire disposed around the insulating material. The core has a plurality of slots cut from one end of the core so that the core defines a plurality of metal strips. A support ring is disposed on the internal surface of the core to support the metal strips.
    Type: Application
    Filed: July 15, 2009
    Publication date: January 21, 2010
    Applicant: The Charles Machine Works, Inc.
    Inventors: David J. Harak, Sean A. McLain
  • Patent number: 7538743
    Abstract: An antenna for radiating and/or receiving signals. The antenna includes (i) a first hollow and helical pipe, (ii) a second hollow and helical pipe, (iii) a first transmission wire, (iv) a second transmission wire, and (v) a dielectric connector. The dielectric connector physically couples to the first hollow and helical pipe and the second hollow and helical pipe. The first hollow and helical pipe and the second hollow and helical pipe comprise an electrically conductive material. The first transmission wire comprises a first portion and a second portion. The second transmission wire comprises a third portion and a fourth portion. The first portion of the first transmission wire and the third portion of the second transmission wire are inside the first hollow and helical pipe.
    Type: Grant
    Filed: November 15, 2007
    Date of Patent: May 26, 2009
    Assignee: International Business Machines Corporation
    Inventor: Hyman D. Chantz
  • Patent number: 7501824
    Abstract: With a view to shortening the cable laying time there is provided a magnetic resonance imaging apparatus for generating an image of a subject in accordance with a magnetic resonance signal received after application of a high-frequency magnetic field to the subject under a static magnetic field and a gradient magnetic field, the magnetic resonance imaging apparatus comprising a base, operating portions provided in the base and performing predetermined operations, such as a data collector and a controller, two pipes projecting from the base, and plural cables wound in the figure of 8 onto projecting portions of the two pipes projecting from the base, one end of the cables being connected electrically to the operating portions.
    Type: Grant
    Filed: June 14, 2007
    Date of Patent: March 10, 2009
    Assignee: GE Medical Systems Global Technology Company, LLC
    Inventors: Hisashi Kawachi, Norifumi Ohgishi, Nobutaka Ito
  • Patent number: 7286100
    Abstract: An adjustable antenna apparatus and method includes an antenna wire control device for controlling the release and retrieval of antenna wire. Antenna wire is attached to the antenna wire control device and an antenna wire tensioning device is attached to the antenna wire. According to another aspect of the invention, the antenna wire control device includes a positive control device for preventing release and retrieval of the antenna wire.
    Type: Grant
    Filed: August 27, 2005
    Date of Patent: October 23, 2007
    Inventor: Frank John McGinley, Jr.
  • Patent number: 6953619
    Abstract: Disclosed are conductive polymeric materials comprising a resin-based structural material loaded with micron conductive fibers and/or micron conductive powders or to provide a conductive thermoplastic composition rather than an insulator. Also disclosed are antennas comprising the conductive thermoplastic compositions and methods for their fabrication.
    Type: Grant
    Filed: January 29, 2004
    Date of Patent: October 11, 2005
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: David M. Dean, Mehrdad Mehdizadeh, Steven F. Fecanin, Stewart Carl Feinberg
  • Patent number: 6822621
    Abstract: An antenna comprises one or more radiating strands where at least one radiating strand has both its ends connected by means of one or more conductive wires, the radiating strands forming part of the upper pole of the antenna. Application to monopole or dipole type antennas working in the frequency ranges corresponding to the HF, VHF or UHV bands.
    Type: Grant
    Filed: February 21, 2003
    Date of Patent: November 23, 2004
    Assignee: Thales
    Inventors: Frédéric Lamour, Gil Maugrion, Ivan Wolk
  • Publication number: 20030214455
    Abstract: An antenna comprises one or more radiating strands where at least one radiating strand has both its ends connected by means of one or more conductive wires, the radiating strands forming part of the upper pole of the antenna. Application to monopole or dipole type antennas working in the frequency ranges corresponding to the HF, VHF or UHV bands.
    Type: Application
    Filed: February 21, 2003
    Publication date: November 20, 2003
    Inventors: Frederic Lamour, Gil Maugrion, Ivan Wolk
  • Patent number: 6486849
    Abstract: A compact L-band antenna includes a plurality of elongated radiating elements arranged in a conical configuration. Ends of the radiating elements are attached to provide a single conductor end, which is attached to a connector structure.
    Type: Grant
    Filed: February 14, 2001
    Date of Patent: November 26, 2002
    Assignee: Raytheon Company
    Inventor: Rondald L. Buckles
  • Patent number: 5608416
    Abstract: This invention is a lightweight, portable, quickly assembled, wide band, discone antenna for high frequency ground wave communication. The disk portion of the antenna is formed of telescoping spokes and the cone portion is formed of separate retractable wire elements. Disassembled, the antenna can be carried in a backpack. It can be assembled in less than ten minutes to achieve non-fading, non-line-of-sight communication.
    Type: Grant
    Filed: November 14, 1995
    Date of Patent: March 4, 1997
    Assignee: The Johns Hopkins University
    Inventors: James R. Champion, Denver N. Tenney, Laurence C. Simms
  • Patent number: 5493771
    Abstract: An open mesh material for use as a high performance RF reflective antenna surface and which is formed as a Leno type weave using electrically conductive composite yarns which have a construction for avoiding loose metal-to-metal contacts which generate undesirable passive intermodulation products (PIM). The composite yarns are formed by counter-wrapping stretch resistant nonconductive strands about an insulated metal strand and a stretch resistant nonconductive filler yarn. The insulated metal strand preferably includes a beryllium-copper wire which is encapsulated within a polyamide coating. The woven mesh is coated with a RF energy transparent silicone-based paint to provide additional insulation to the plastic coated wires at the weave junctions and has a surface resistivity sufficiently low to facilitate bleed off of building electro-static charges.
    Type: Grant
    Filed: June 27, 1994
    Date of Patent: February 27, 1996
    Assignee: Lockheed Missiles & Space Company, Inc.
    Inventors: Ajit K. Sinha, Sandra L. Tang
  • Patent number: 5233362
    Abstract: An antenna (20) has a set of elongated electrically conductive radiating elements (24) disposed about a central mast (26) in the form of a maypole. The radiating elements are electrically connected to each other at a top end of the mast by a top ring (28) and near a bottom end of the mast by a bottom ring (30), both of the rings being electrically insulated from the mast. A positioning unit (32) is located on the mast between the two rings for bowing the radiating elements away from the mast. Sections of the respective radiating elements located between the positioning unit and the bottom ring are severed and connected together by impedance elements (82). Each of the impedance elements includes a resistor (84) which serves as a load for providing a current distribution in a radiating element similar to that of a traveling wave, the impedance elements also having an inductor (86) and a capacitor (88) connected in parallel with the resistor.
    Type: Grant
    Filed: January 28, 1991
    Date of Patent: August 3, 1993
    Assignee: Hughes Aircraft Company
    Inventors: Eduardo H. Villaseca, Donald G. Keppler
  • Patent number: 5142861
    Abstract: An electromagnetic propulsion system based on an extremely low frequency (elf) radiating antenna structure driven by a matched high current pulsed power supply is described. The elf antenna structure resembles a modified three dimensional multiple-turn loop antenna whose geometry is optimized for the production of reaction thrust rather than the radiation of electromagnetic energy into space. The antenna structure is current driven rather than voltage drive. Rigid three dimensional geometric asymmetry, made up of flat electrical conductors that form a partially closed volume in the loop antenna structure, trap magnetic flux thereby causing a magnetic field density gradient along a single axis. This magnetic field density gradient then causes an imbalance in the magneto- mechanical forces that normally result from the interactions of the loop antenna's internal magnetic field with the current in the conductors of the loop antenna structure, as described by the Lorentz Force Law.
    Type: Grant
    Filed: April 26, 1991
    Date of Patent: September 1, 1992
    Inventors: Rex L. Schlicher, Steven M. Rinaldi, David J. Hall, Peter M. Ranon, Charles E. Davis
  • Patent number: 4835542
    Abstract: A biconical antenna for ultra broad-band linear polarization operation in which capacitive sleeve VSWR tuning is effected between the apex regions of the two cones and zig-zag substantially V-shaped spokes are provided conically diverging from the cone base peripheries.
    Type: Grant
    Filed: January 6, 1988
    Date of Patent: May 30, 1989
    Assignee: Chu Associates, Inc.
    Inventor: Thomas V. Sikina, Jr.
  • Patent number: 4772894
    Abstract: The invention relates to a device for wind bracing of the vertical members of a lattice mast. It is characterized in that it is provided at its ends (5, 6) with detachable means (8, 9) for joining it to its vertical members, which in turn are provided with complementary means (10).
    Type: Grant
    Filed: June 18, 1985
    Date of Patent: September 20, 1988
    Assignee: Laboratorie d'Etudes et de Recherches Chimiques (LERC) S.A.
    Inventors: Yves Foissac, Guy Guislain, Frederic Ngo, Philippe Bertin
  • Patent number: 4358773
    Abstract: An omnidirectional antenna for TV reception and the like has a dielectric semi-circular frame with a central aperture in the diametral portion and a succession of equally spaced notches in the circumferential arc around which a plurality of loops of a continuous length of twin-lead wire are coiled in a substantially random sequence, yielding advantages superior in more than one respect to conventional "rabbit ears" type antenna.
    Type: Grant
    Filed: February 23, 1981
    Date of Patent: November 9, 1982
    Inventors: John T. Staub, Jr., Lucy A. Staub
  • Patent number: 4131897
    Abstract: The present invention discloses an antenna for broad-band radio wave receivers comprising a plurality of conductive elongated members, each being attached at one end to a planar conductive base, the other ends converging at and forming the apex of an enclosed triangular area. Terminals are provided to connect the antenna with a receiver via lead means and jumper means so as to effectively provide a dual band function if required. At least one terminal is electrically and mechanically connected to the conductive base, the connection of the other is dependent upon the specific configuration of the base. The physical size of the antenna is extremely small, a practical size in application will be two to six inches in height.
    Type: Grant
    Filed: March 16, 1978
    Date of Patent: December 26, 1978
    Inventor: Charles J. Gaunt
  • Patent number: 4030101
    Abstract: The antenna element, which is for use in television reception and the like, is manufactured from a single length of metallic bar or tubing which is bent to form the longitudinal edges of a regular eight face polyhedron, with the two ends of the length of metallic bar or tubing being bent outwardly parallel to each other at the bottom of the antenna element to constitute terminals. The antenna element has directional characteristics in four directions, in contrast to conventional antennas, such as dipole antennas or loop antennas, which have directional properties in only two directions, and can be miniaturized by utilizing known printed circuit manufacturing techniques. The antenna element has its best capacity when the length of each edge of the polyhedron is equal to one half the wavelength of an electromagnetic wave of a predetermined frequency.
    Type: Grant
    Filed: March 15, 1976
    Date of Patent: June 14, 1977
    Inventor: Kazuhisa Satoh