Physical Structure Patents (Class 333/140)
  • Patent number: 4967172
    Abstract: Disclosed are microwave phase shifter circuits which achieve phase shifts of elementary values and of whole number multiples of the values. The phase shifter circuit is made by utilizing of strip lines arranged in candlestick form on one face of a substrate and a slot line arranged on the other face. The length of the branches of the candlestick differ by b/4, b being the wavelength, and the ends of the branches are short-circuited or not short-circuited by utilizing of diodes which can be forward biased or reverse biased.
    Type: Grant
    Filed: March 28, 1989
    Date of Patent: October 30, 1990
    Assignee: Thomson-CSF
    Inventors: Joelle Ariel, Jacques Legendre
  • Patent number: 4961060
    Abstract: The disclosure concerns electromagnetic delay lines of the type having localized constants and being formed by a cascade of derived m networks. The chokes of the delay line are arranged in a folded line, the chokes of two consecutive networks being separated by a distance determined to obtain the desired parameter m, two non-neighboring chokes being separated by a distance sufficient to make their coupling negligible.
    Type: Grant
    Filed: March 13, 1989
    Date of Patent: October 2, 1990
    Assignee: Compagnie Europeenne de Composants Electroniques LCC
    Inventors: Daniel Grandjean, Jean-Michel Seurre, Didier Zastko
  • Patent number: 4885562
    Abstract: According to the invention, the circuit comprises at least one two-port network of the "M-derived" section type and connected as an all-pass filter with a phase law which is a linear function of frequency. The two-port network is made in monolithic technology on gallium arsenide and the plane of its structure includes at least one elementary section, which, between an inlet and an outlet which are situated at a distance apart, is constituted by a spiral connected in parallel with a capacitor of metal-insulator-metal structure, with the mid point of the spiral being connected via another capacitor of metal-insulator metal structure to a ground plane. It is applicable to making transmission lines which are programamble in length.
    Type: Grant
    Filed: December 9, 1987
    Date of Patent: December 5, 1989
    Assignee: Electronique Serge Dassault
    Inventors: Pierre-Louis Ouvrard, Philippe Dueme
  • Patent number: 4800346
    Abstract: A lumped constant delay line has a substrate, capacitor element disposed on one surface of the substrate provided with a through hole therein, an inductor electrode which is dispossed on the other surface of the substrate and is connected to the capacitor elements by means of a through hole conductive section consisting of coated inside wall of the through hole by means of conductive adhesive and an inductor pin soldered onto the inductor electrode while a distributed constant type delay line has an insulating substrate on which a ferrite layer, an inductance layer, a dielectric layer and a ground electrode layer are superposed one after another and a wiper makes sliding on a wiper base composed of a group of parallel taps which are led out from the meandering paths of the inductance conductive layer and converged toward one side of the insulating substrate whereby to cause variation of delay time of the delay line.
    Type: Grant
    Filed: May 13, 1987
    Date of Patent: January 24, 1989
    Assignee: Delphi Company Ltd.
    Inventors: Masayauki Muramatsu, Toshiki Morozumi
  • Patent number: 4722027
    Abstract: In a hybrid circuit device comprising a base plate on which a circuit including coils is provided, and a flat package of integrated circuit having a smaller flat area than that of the base plate, the flat package and base plate are superimposed upon each other; the two circuits are connected together through terminals of the flat package; external terminals are connected to at least one of the two circuits; the hybrid circuit device is encapsulated with plastics as a whole, with the external terminals being exposed through the encapsulation; and on that part of the base plate which does not overlap the flat package, circuit components constituting the circuit provided on the base plate are securely mounted at lateral positions with respect to the flat package.
    Type: Grant
    Filed: August 5, 1986
    Date of Patent: January 26, 1988
    Assignee: Toko Inc.
    Inventor: Yasumitsu Hayakawa
  • Patent number: 4697162
    Abstract: This variable delay line system includes a variable delay line which has two output ends and a plurality of signal input points at its intermediate points, a means for selecting one of the input points of the variable delay line and for inputting a signal thereto, and a means for switching the signals from the output ends of the variable delay line and for outputting them. Optionally, a fixed delay line can further be included. Thereby, the varibale delay line system has a simple and compact structure and is effective.
    Type: Grant
    Filed: February 5, 1986
    Date of Patent: September 29, 1987
    Assignee: Elmec Corporation
    Inventor: Kazuo Kameya
  • Patent number: 4695812
    Abstract: This distributed constant type delay line has an inductance element which has a plurality of main portions lying generally in parallel stacked planes. Each of the main portions has a conducting portion with a generally central line, the conducting portions being connected in series with one another with their the central lines lying generally parallel to one another and being alternately staggered to and fro in the direction generally perpendicular to them and generally parallel to the stacked planes. A ground electrode is interposed between the conducting portions of two neighboring ones of the main portions of the inductance element. And a dielectric layer is interposed between the ground electrode and a neighboring one of the main portions of the inductance element. Thereby, a very efficient and compact construction becomes available, which is suitable for being made as a chip. Optionally, capacitance compensating electrodes are defined as extending out from the main portions of the inductance element.
    Type: Grant
    Filed: March 14, 1986
    Date of Patent: September 22, 1987
    Assignee: Elmec Corporation
    Inventor: Kazuo Kameya
  • Patent number: 4686495
    Abstract: This finely variable delay line includes a first variable delay line element the delay time provided by which can be relatively coarsely varied, and a second variable delay line element the delay time provided by which can be relatively finely varied, connected in series with the first variable delay line. A reflection circuit is constituted between an element included in the second variable delay line and another element of the construction, the reflection circuit reflecting back a signal towards the element of the second variable delay line. Although some slight mismatching is in fact present, such mismatching is quite negligible in practice, and this variable delay line can be very finely adjusted by steps of as little as 0.5% of its total range or less.
    Type: Grant
    Filed: February 19, 1986
    Date of Patent: August 11, 1987
    Assignee: Elmec Corporation
    Inventor: Kazuo Kameya
  • Patent number: 4656442
    Abstract: A hybrid circuit device comprising a flat package incorporating an integrated circuit therein, and a delay line circuit constituted by a plurality of coils and a plurality of capacitors. A base plate supporting the delay line circuit is disposed on the flat package. First terminals which are upwardly bent and second terminals are led out of the flat package. The upwardly-bent terminals connect the integrated circuit and delay line circuit to each other at side portions of the base plate. Furthermore, separate external terminals, which are attached to the base plate and connected to the second terminals of the flat package, are provided in two rows holding the flat package therebetween. The device is encapsulated with the free end portion of each of the separate external terminals being exposed through the encapsulation at a position substantially equidistant from the top and bottom surfaces of the encapsulated device.
    Type: Grant
    Filed: February 13, 1985
    Date of Patent: April 7, 1987
    Assignee: Toko, Inc.
    Inventor: Yasumitsu Hayakawa
  • Patent number: 4649356
    Abstract: A low profile high speed electromagnetic delay line capable of long delay times and transmitting signals having rise times less than approximately one nanosecond is described. The electromagnetic delay line is of a single in-line package configuration, but of such a configuration that commercial production is facilitated. A coil assembly has input and output and intermediate terminals extending from the same side of the coil assembly to be connected to flat electrodes on an insulating plate. These connections all occur on the same edge of the insulating plate. At a second opposed edge of the insulating plate are connected terminals leading to external circuits. The various electrodes which receive the coil connections are also connected to the individual capacitors of an elongated flat plate capacitor, and these electrodes are in turn connected to the external connections.
    Type: Grant
    Filed: January 2, 1986
    Date of Patent: March 10, 1987
    Assignee: Elmec Corporation
    Inventor: Kazuo Kameya
  • Patent number: 4642588
    Abstract: This invention aims to provide a method of adjustment for a variable delay line which is provided with two delay line elements of dissimilar delay times and switch means capable of selectively switching from one to the other of the two delay line elements and adapted to enable the delay time to be digitally increased or decreased by the delay time difference produced by the selective switching between the delay time elements. This method allows the delay time to be finely adjusted with high accuracy of the order of 1 to some tens of ps by changing the delay time of either of the two delay line elements which has a smaller delay time than the other.
    Type: Grant
    Filed: May 22, 1984
    Date of Patent: February 10, 1987
    Assignee: Elmec Corporation
    Inventor: Kazuo Kameya
  • Patent number: 4641112
    Abstract: In a lumped constant type delay line device, conductive plates provided with connecting portions and terminals are insert-molded with respect to a plastic base plate in such a manner that the connecting portions are exposed at one surface of the base plate and the terminals extend externally of the base plate. The delay line device further includes capacitors connected to the connecting portions of the conductive plates; and coils having taps connected to electrodes provided on cores and connected to the terminals of the conductive plates, the coils being mounted on the other surface of the base plate.
    Type: Grant
    Filed: March 4, 1986
    Date of Patent: February 3, 1987
    Assignee: Toko, Inc.
    Inventor: Masami Kohayakawa
  • Patent number: 4639696
    Abstract: In a lumped constant type delay line device comprising a plurality of terminals securely attached to a base plate of an insulating material, and a plurality of cores each having a coil wound thereon, an electrode is provided on the top surface of each core, and a tap of each coil is connected to the electrode.
    Type: Grant
    Filed: November 5, 1985
    Date of Patent: January 27, 1987
    Assignee: Toko, Inc.
    Inventor: Kiyobumi Murata
  • Patent number: 4629897
    Abstract: Proportional detector intended to detect ionizing radiations for 2-dimension localization.This detector consists of a network of conducting wires (2) forming the anodes of an ionization chamber and operating under avalanche conditions and is characterized in that it comprises a continuous resistive collector (12) with two dimensions and located between the anode (2) wires and the cathode (1) on which the localization of an electron avalanche is effected by electrostatic induction, the reading of the data concerning the electric pulse generated by induction on the collector (12) being effected at the periphery of the latter.
    Type: Grant
    Filed: February 28, 1983
    Date of Patent: December 16, 1986
    Assignee: Centre National de la Recherche Scientifique
    Inventors: Marc Lemonnier, Denis Petermann, Daniel Le Fur, Stephan Metgert
  • Patent number: 4620164
    Abstract: A variable delay line using a lumped constant type electromagnetic delay line and enjoying a superhigh-speed rising characteristic is disclosed, which comprises an inductance element formed by winding a conductor and possessed of a plurality of taps, a plurality of capacitors having electrodes thereof on one side kept in common connection, a plurality of linking electrodes disposed along the inductance element and adapted to interconnect the taps of the inductance element and the electrodes of the capacitors on the other side, fixed contacts formed of limited surface regions of the linking electrodes, and movable contact means adapted to advance on the fixed contacts while keeping pressed contact with each fixed contact so as to permit selection of the taps of the inductance element.
    Type: Grant
    Filed: October 30, 1984
    Date of Patent: October 28, 1986
    Assignee: Elmec Corporation
    Inventor: Kazuo Kameya
  • Patent number: 4583062
    Abstract: An electromagnetic delay line is disclosed which is provided with an inductance element formed by a conductor winding with capacitors arranged between the inductance element and ground dividing the element into a plurality of sections. These sections are formed of loops resulting from the winding of the conductor and the loops of adjacent sections are formed in opposed planes divergent in alternately opposite directions. The electromagnetic delay line acquires the optimum coupling coefficient between the sections and achieves advantageous delay characteristics in a wide frequency band including the ultra-high frequency band. Particularly, it obtains the ultra-high speed rise time of less than 1 ns.
    Type: Grant
    Filed: January 31, 1984
    Date of Patent: April 15, 1986
    Assignee: Elmec Corporation
    Inventor: Kazuo Kameya
  • Patent number: 4570136
    Abstract: An electromagnetic delay line of a distributed constant type making use of a zigzag strip as a strip line and suitable for use in very high frequency ranges. The zigzag strip comprises electroconductive strips which are bent in such a manner that they are arranged on a first imaginary plane and a second imaginary plane parallel and opposite thereto and spaced apart therefrom by an interval of T, in an alternating manner, and the pitch P and the interval T are so related to each other that the ratio T/P is greater than zero and smaller than unity. Therefore the coupling produced in the zigzag strip is enhanced and the enhanced positive coupling controls negative coupling by reducing or canceling it.
    Type: Grant
    Filed: December 26, 1984
    Date of Patent: February 11, 1986
    Assignee: Elmec Corporation
    Inventor: Kazuo Kameya
  • Patent number: 4570135
    Abstract: An ultra-high speed lumped constant delay line includes an inductance element formed by winding a conductor into a single layer solenoid shape of predescribed pitch P, and a plurality of capacitors connected between ground and the conductor at every turn of the inductance element. The pitch P and the winding diameter T in the direction of short diameter are set according to the relation 0.2<P/T<1.9.
    Type: Grant
    Filed: February 18, 1983
    Date of Patent: February 11, 1986
    Assignee: Elmec Corporation
    Inventor: Kazuo Kameya
  • Patent number: 4565981
    Abstract: An electromagnetic delay line of novel construction is disclosed which comprises an inductance element having a conductor wound as regularly spaced in the form of a single-layer solenoid and a plurality of capacitors inserted to connect the conductor of the inductance element and a ground after a ladder network. The construction is characterized in that the capacitors are connected one each to a plurality of points per turn of the conductor so as to give rise to a plurality of sections for each turn of the conductor. The electromagnetic delay line thus constructed, therefore, is very compact and exhibits a very quick rise of not more than 1 ns.
    Type: Grant
    Filed: September 21, 1984
    Date of Patent: January 21, 1986
    Assignee: Elmec Corporation
    Inventor: Kazuo Kameya
  • Patent number: 4556856
    Abstract: An N-way, lumped element, matched, isolated branch power divider in planar form is disclosed. Lumped inductors are disposed on the top surface of a dielectric substrate, an isolation resistor network is disposed on the bottom surface of the substrate and the substrate is suspended above a ground conductor by lumped element capacitors. The capacitance values of the capacitors and the inductance values of the inductors are selected to provide between the common terminal and each branch terminal a lumped element .pi. network transmission line having a phase shift of about 90.degree. at frequencies within an operating range of frequencies.
    Type: Grant
    Filed: September 18, 1984
    Date of Patent: December 3, 1985
    Assignee: RCA Corporation
    Inventor: Adolph Presser
  • Patent number: 4555291
    Abstract: A method of constructing an LC network, and the resulting LC network manufactured by cutting and removing a predetermined pattern from a first and a second conductive sheet, leaving on each sheet a generally coil-like configuration of windings with a sufficient number of interconnections between the adjacent windings to add rigidity to the sheets, laminating these conductive sheets to opposing faces of a non-conductive sheet, thereby forming at least one capacitor, cutting and removing a pre-determined pattern from the lamination eliminating at least some of the interconnections and leaving a conductive path on the conductive sheets which is in the configuration of a coil.
    Type: Grant
    Filed: May 17, 1984
    Date of Patent: November 26, 1985
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: William C. Tait, Lanny L. Harklau
  • Patent number: 4554486
    Abstract: A transformer (T) with a primary winding (L1) and a secondary winding (L) coupled to the primary winding. A capacitive element (C) is coupled to the secondary winding for providing an increased output voltage level and an increased output current level from the transformer. The capacitive element may be either of distributed or lumped parameter structure. A reduction in the number of secondary winding turns may be compensated for with the capacitive element to maintain the same voltage output level as was obtained prior to reduction in secondary winding turns and also to obtain an increased current output level by virtue of the presence of the capacitive element and/or the reduction in the number of secondary winding turns. Such reduction in secondary winding turns reduces the physical size of the transformer as well as reducing its copper losses, and also reduces its cost of fabrication.
    Type: Grant
    Filed: October 18, 1984
    Date of Patent: November 19, 1985
    Inventor: Martin E. Gerry
  • Patent number: 4546332
    Abstract: A variable delay line is disclosed which comprises an electromagnetic delay line formed of an inductance element and capacitors, a conductive plate disposed along the electromagnetic delay line and opposed thereto, and a movable contact adapted to move along the delay line while remaining in continuous contact with the conductive plate and the inductance element. The variable delay line has its delay characteristics improved by bending the aforementioned conductive plate in such a manner that it is separated from the delay line along the contact parts exposed to contact with the movable contact and, as a result, the stray capacitance formed between the delay line and the conductive plate is kept down to a negligibly small level.
    Type: Grant
    Filed: January 25, 1984
    Date of Patent: October 8, 1985
    Assignee: Elmec Corporation
    Inventor: Kazuo Kameya
  • Patent number: 4525691
    Abstract: A lumped constant type ultra-high speed variable delay line includes an inductance element consisting of a single layer solenoid formed by winding a conductor with a prescribed pitch, a capacitor connected between said conductor and ground at each turn, a fixed contact array consisting of fixed contacts respectively formed on said each conductor at each turn of said inductance element, and a movable contact element for sliding on said fixed contact array while alternately making single-contact with one of said fixed contacts and multi-contact with adjacent fixed contacts.
    Type: Grant
    Filed: February 18, 1983
    Date of Patent: June 25, 1985
    Assignee: Elmec Corporation
    Inventor: Kazuo Kameya
  • Patent number: 4507628
    Abstract: Disclosed is an electromagnetic type delay line comprising an inductance element formed of a coiled conductor and a plurality of capacitors connecting the conductor to ground and consequently possessing a plurality of sections. The inductance element is formed by coiling the conductor at a prescribed pitch in the shape of a single-layer solenoid. In the inductance element, the one-turn pitch P and half-turn pitch B are selected so as to satisfy the expression, B/P.gtoreq.1.0. Owing to this construction, the coupling coefficients between the individual sections of the inductance element can be easily approximated to the theoretically optimum values.
    Type: Grant
    Filed: July 13, 1983
    Date of Patent: March 26, 1985
    Assignee: Elmec Corporation
    Inventor: Kazuo Kameya
  • Patent number: 4506238
    Abstract: A hybrid circuit device comprising a flat package incorporating an integrated circuit therein, and a delay line constituted by a plurality of coils and capacitors. The base plate having the delay line mounted on one main surface thereof is placed, at the other main surface thereof, on the flat package. Upwardly bent terminals and non-bent terminals are led out of the flat package. The upwardly bent terminals connect the integrated circuit and delay line to each other at side portions of the base plate. Furthermore, separate terminals are provided in two rows holding the flat package therebetween and connected to the non-bent terminals of the flat package. The device is encapsulated, with the free end portion of each of the separate terminals being exposed.
    Type: Grant
    Filed: December 10, 1982
    Date of Patent: March 19, 1985
    Assignee: Toko, Inc.
    Inventors: Kunihisa Endoh, Yasumitsu Hayakawa
  • Patent number: 4482874
    Abstract: A method of constructing an inductive-capacitive (LC) network is disclosed in which a predetermined pattern is cut from a metallic sheet to provide a multi-turn, essentially spiral-like configuration in which a plurality of interconnecting regions are left between adjacent turns. A pre-laminate is then formed by laminating one surface of the configured sheet to a surface of a sheet of dielectric material. A completed multi-turn inductor is formed by a second cutting operation in which the remaining interconnecting regions between the adjacent turns are removed. The LC network is completed by laminating a second metallic sheet to a dielectric layer overlying the completed multi-turn inductor. The first and second cutting operations and assembly of the respective sheets are performed such that any burrs resulting from the operations are directed away from the interlying sheet of dielectric material, thereby avoiding problems due to shorting out between the two metallic sheets.
    Type: Grant
    Filed: June 4, 1982
    Date of Patent: November 13, 1984
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Roland W. Rubertus, William C. Tait
  • Patent number: 4472725
    Abstract: A tuneable lumped LC electronic delay line for delaying RF signals in a bandwidth of at least 100 MHz by a substantially constant amount throughout the band, the delay line including a plurality of deformable air coil inductors that are inductively coupled to one another, a plurality of capacitors connected between each inductor pair and electrical ground, and a reactive element connected at one end of the series of inductors and reactively coupled to electrical ground.
    Type: Grant
    Filed: February 1, 1982
    Date of Patent: September 18, 1984
    Assignee: Century III Electronics Inc.
    Inventor: Robert M. Blumenkranz
  • Patent number: 4453144
    Abstract: An LC composite component comprising a coaxial bobbin, a plurality of collars thereon defining winding grooves therebetween, coils wound in the winding grooves, each collar having a concave recess therein, open at a top end thereof, terminal pins projecting upwardly from the opposite ends of the concave recess, a leadless tip type capacitor having upwardly projecting electrodes accommodated in the concave recess and the coils and the capacitor electrodes being connected with each other by the terminal pins, the capacitor electrodes being connected to the terminal pins so as to stably and firmly secure the capacitor at the open end of the concave recess of each collar.
    Type: Grant
    Filed: January 27, 1982
    Date of Patent: June 5, 1984
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Toshiaki Tamura, Yoshiaki Otani, Hiroshi Otake, Masami Yamamura
  • Patent number: 4451764
    Abstract: An ignition system utilizes a bipolar activated magnetic pulse timer which effectively makes operation of the timer independent of the automotive supply voltages. Such system utilizes a distributed parameter component which may be utilized as a shunt across the ignition transformer secondary winding and also as a high voltage ignition distribution cable. The use of the distributed parameter component as a shunt enables extremely high energy levels to be generated. The use of the distributed parameter component as a distribution cable enables high energy levels to be transferred to the igniters without radio noise induction in a contiguous radio receiver.
    Type: Grant
    Filed: May 5, 1983
    Date of Patent: May 29, 1984
    Inventor: Martin E. Gerry
  • Patent number: 4310815
    Abstract: An electromagnetic delay line, comprising two coil formers (5) which are provided with windings and which are adjacently arranged in parallel. On the outer surface of each coil former (5) there is provided a metal strip (7). The metal strips (7) are interconnected by way of a narrow connecting strip (9). During the deposition of windings (3), the coil formers (5) are situated one in the prolongation of the other. Subsequently, they are pivoted to their ultimate position via the connecting strip.
    Type: Grant
    Filed: June 27, 1980
    Date of Patent: January 12, 1982
    Assignee: U.S. Philips Corporation
    Inventors: Peter M. C. van der Linden, Cornelis van Wieringen
  • Patent number: 4287492
    Abstract: A concentrated constant type delay device can be assembled in simple steps and has simple and stable structure. The delay device comprises a composite capacitor which comprises a common electrode placed on one surface of a dielectric and a plurality of separated electrodes placed on the other surface of the dielectric and the separated electrodes being respectively connected to each joint of coils connected between an input terminal and an output terminal.
    Type: Grant
    Filed: August 24, 1979
    Date of Patent: September 1, 1981
    Assignee: TDK Electronics Co., Ltd.
    Inventors: Yoshio Goshima, Hisashi Osada
  • Patent number: 4272741
    Abstract: A delay line having an inductive component in which inductive windings are made on multiple post bobbin units to maintain spacing and alignment. Two multiple bobbin units are collectively wound and then secured together with the bobbins interfitting to form a rigid, precisely aligned element, with the wires from each bobbin positioned for ease of connection. The inductive component is mounted on the base of a dual in-line package (DIP), capacitors are secured in the inductive component and the electrical connections are made to connect the inductors and capacitors to the contact pins of the DIP. The assembly is then potted or otherwise enclosed for protection.
    Type: Grant
    Filed: April 9, 1979
    Date of Patent: June 9, 1981
    Assignee: Varian Associates
    Inventor: Jacobus J. M. Vanderknyff
  • Patent number: 4241995
    Abstract: An apparatus for measuring the amount of relative displacement of mutually facing electrodes in such a direction as to cause a change in the distance therebetween, comprises:a power source generating an AC signal of a determined frequency;a phase-shifting means comprising a resistor and the mutually facing electrodes, the phase-shifting means being adapted to apply the AC signal to the mutually facing electrodes through the resistor and to generate an output signal of which the phase is shifted in response to the amount of relative displacement of the mutually facing electrodes; anda phase difference measuring means for measuring phase difference between the output signal of the phase-shifting means and the AC signal and generating a signal corresponding to the amount of relative displacement of the mutually facing electrodes.
    Type: Grant
    Filed: December 22, 1978
    Date of Patent: December 30, 1980
    Assignee: Nippon Kogaku K.K.
    Inventor: Akio Takahama
  • Patent number: 4203081
    Abstract: A passive circuit element for influencing pulses has two series-connected inductances which connect a first input terminal to a first output terminal, a first capacitor which is connected between the connection point of the inductances and the second terminals which are either directly connected to one another or which coincide with one another. The inductances are formed by spiral conductor paths which are arranged on a substrate and which are oppositely directed to one another. The spiral conductor paths are arranged concentrically above one another in two different conductor path layers which are separated by an insulating layer. The inner ends of the spiral conductor paths are connected by means of a contact extending through the insulating layer and to which a plate of the first capacitor is also connected.
    Type: Grant
    Filed: March 17, 1978
    Date of Patent: May 13, 1980
    Assignee: Siemens Aktiengesellschaft
    Inventor: Walter Braeckelmann
  • Patent number: 4162464
    Abstract: Two groups of conductors are wound helically with opposite pitch around a core and are further intertwined to establish a mesh, braid or plait. The conductors of each group are interconnected to establish the signal line and the return path for the delay line.
    Type: Grant
    Filed: November 11, 1977
    Date of Patent: July 24, 1979
    Assignee: Kabel-und Metallwerke Gutehoffnungshutte Aktiengesellschaft
    Inventor: Otto Breitenbach