Patents Examined by Thomas A. Robinson
  • Patent number: 4371746
    Abstract: Edge terminations for polygonal impedance or resistance surfaces provide linearization of current flow to and/or from the surface through electrical connections at the vertices of the polygon. The edge terminations are constituted by a series of parallel ranks or rows of connective segments overlaid, inlaid or printed at each edge of the polygonal surface with the innermost row or rank being short straight segments and the length of each segment of the next innermost row, respectively, being longer. The central segment in each row or rank is electrically interconnected with the central segments in the other rows. A guard plane of conductive metal insulated from the impedance or resistance surface is also provided.
    Type: Grant
    Filed: February 12, 1980
    Date of Patent: February 1, 1983
    Assignee: Peptek, Incorporated
    Inventor: William Pepper, Jr.
  • Patent number: 4371758
    Abstract: A method is disclosed for automatically detecting a trunk that is likely to be defective even though it passes operational tests incident to switching it into service. In a telephone system, such a trunk might, for example, be so noisy or ineffective for transmission that customers cannot communicate over that trunk. Resultingly, the trunk is likely to handle a much higher than normal number of calls with short holding times since the customers quickly discover that they cannot communicate and terminate the calls. The method is implemented via telephone call processing, memory lists, and a program routine integrated into the call disconnect sequences. It allows such defective trunks to be identified by the steps of: detecting all calls with short holding times, successively processing trunk identities which have a repetition of such short holding-time calls, and alerting the maintenance force when such trunks have been processed through several memory lists.
    Type: Grant
    Filed: June 8, 1981
    Date of Patent: February 1, 1983
    Assignee: Bell Telephone Laboratories, Incorporated
    Inventor: Werner Ulrich
  • Patent number: 4370742
    Abstract: A time division electronic switching system including, as main structural elements, a central processing unit, a multi-frequency signal receiver unit, a signal processor and a time division switch including a speech path memory. Dial information from a subscriber or from another telephone office is detected in the multi-frequency signal receiver unit, the output of the multi-frequency signal receiver unit is written into the speech path memory, and an access circuit reads out the information written in the speech path memory and supplies it to the signal processor as read out information.
    Type: Grant
    Filed: September 15, 1980
    Date of Patent: January 25, 1983
    Assignee: Fujitsu Limited
    Inventors: Eiji Minamitani, Kiyoo Ozawa, Takashi Yokoto
  • Patent number: 4368862
    Abstract: A fail-safe magnetic sensing arrangement including a first and a second object relatively movable in relationship to each other. The first object includes a magnetic structure having a permanent magnet and a pair of pole pieces to develop a magnetic field. The second object includes an a.c. oscillator which is coupled to an amplifier by a saturable reactor transformer and the amplifier feeds a negative d.c. maker which normally energizes a relay except when the saturable reactor transformer is saturated by the magnetic structure which signifies that the second object is in the vicinity of the first object.
    Type: Grant
    Filed: December 22, 1980
    Date of Patent: January 18, 1983
    Assignee: American Standard Inc.
    Inventor: Reed H. Grundy
  • Patent number: 4368352
    Abstract: A digitizer having a pointer or cursor driven by an alternating carrier signal and a grid of sequentially enabled parallel spaced conductors inductively coupled to the cursor in which enabling of the conductors is initiated at an origin conductor and continues with a serial scan of the conductors until a phase change is detected when the cursor is between the origin conductor and an enabled conductor. The grid is sub-divided into overlapping sections which are scanned in sequence until the pointer is located. After the pointer is located, the conductor enabling scans begin at a conductor enabling device a predetermined distance from the enabling device actuated when pointer position was detected. Means are provided for re-initiating conductor enabling scans at the origin conductor in the absence of detection of the pointer.
    Type: Grant
    Filed: February 12, 1981
    Date of Patent: January 11, 1983
    Assignee: Summagraphics Corporation
    Inventor: Robert Davis
  • Patent number: 4368363
    Abstract: An audible test termination device for providing a characteristic signature to the telephone central office and an audible signal to the customer when a continuity test is made on a subscriber line having a pair of electrically conductive paths includes a miniature audio indicator and a minimum of associated electrical components to indicate to the central office test operator and the customer that the telephone subscriber line is in operating order. One embodiment of the instant invention may be utilized as an additional high impedance ringer for the customer. The present device may be permanently installed across the subscriber line.
    Type: Grant
    Filed: May 11, 1981
    Date of Patent: January 11, 1983
    Assignee: TII Industries Inc.
    Inventor: Omprakash G. Ahuja
  • Patent number: 4368351
    Abstract: A digitizer having a pointer or cursor driven by an alternating carrier signal and a grid of sequentially enabled parallel spaced conductors inductively coupled to the cursor includes an AM demodulator for detecting the instantaneous time of change of phase of the signal induced in the grid. In a preferred embodiment of the invention, a multiplier is used as the demodulator.
    Type: Grant
    Filed: February 12, 1981
    Date of Patent: January 11, 1983
    Assignee: Summagraphics Corporation
    Inventor: Scott E. Zimmer
  • Patent number: 4368353
    Abstract: A high operational speed print head for mosaic printing is provided which has a plurality of print needles positioned on a straight line, each being selectively driven toward a piece of paper through an ink ribbon. The printer head comprises a cylindrical permanent magnet ring magnetized in the axial direction; a circular bottom plate covering the bottom of the permanent magnet; and a plurality of electromagnets each having a center core and a coil wound around the core positioned on a circle on said bottom plate so as to be surrounded by the permanent ring magnet. A yoke provides a closed magnetic path with the permanent ring magnet, the bottom plate and each of the electromagnets. A plurality of moving bodies equal in number to the number of electromagnets are provided, each having at least an elongated armature overlying the core of the related electromagnet and composing a part of said closed magnetic path.
    Type: Grant
    Filed: March 6, 1981
    Date of Patent: January 11, 1983
    Assignees: OKI Electric Industry Co., Ltd., Nippon Telegraph & Telephone Public Corporation
    Inventors: Hirokazu Ando, Yasuo Ohmori, Kazumasa Fukushima, Mitsuo Iwama, Tsunematsu Takahashi
  • Patent number: 4368359
    Abstract: A wall telephone stand is disclosed that includes facilities for both displaying messages and for storing a telephone directory. The stand comprises a support member adapted to be mounted to a wall, a housing secured to the support member, and a display member secured to the housing. The housing includes a handset cradle on one side and a storage compartment open to the other side, while the display member includes a display panel surrounded by a frame. The manner of assembly is such that the user can select on which side of the stand the handset cradle is situated and the type of display panel and style of frame to be used.
    Type: Grant
    Filed: December 9, 1980
    Date of Patent: January 11, 1983
    Assignee: Bell Telephone Laboratories, Incorporated
    Inventors: Donald M. Genaro, Richard G. Klier, John N. McGarvey, Warren R. Tolman
  • Patent number: 4367373
    Abstract: An improved two-axis electromechanical controller for controlling a dynamic process is described herein and comprises a hand grip coupled to two gimbal elements having mutually perpendicular axes of rotation, adjustable spring centering means mounted eccentric to the said axes of rotation and an adjustable counterweight for resisting displacement forces on the grip and restoring the grip to a reference position when a displacement force is removed, and electrical transducers for sensing the angular positions of each gimbal element. The force versus displacement relationship of the controller of the described invention is smooth and monotone, and may be adjusted to be substantially linear.
    Type: Grant
    Filed: April 7, 1981
    Date of Patent: January 4, 1983
    Assignee: The United States of America as represented by the Secretary of the Air Force
    Inventors: Joe W. McDaniel, Nilss M. Aume
  • Patent number: 4367549
    Abstract: A time-division multiplexing method and device are disclosed for combining a data signal and several secondary binary signals into a train of pulses, whereby data signals can be transmitted at various bit rates in synchronous or asynchronous mode. The data signal and N secondary signals are multiplexed together using two different frames respectively termed "synchronous frame" and "asynchronous frame," depending on whether data transmission is to be performed in synchronous or asynchronous mode. The asynchronous frame comprises a frame-alignment bit having a predetermined value, a data bit, and N bits pertaining respectively to the N secondary signals. The synchronous frame is divided up into n subframes, l.sub.1 bits in length each, where n is equal to the integer that is immediately larger than the quantity N/(l.sub.1 -2). Length l.sub.1 is defined by the relation l.sub.
    Type: Grant
    Filed: February 12, 1981
    Date of Patent: January 4, 1983
    Assignee: International Business Machines Corp.
    Inventor: Pierre Vachee
  • Patent number: 4367453
    Abstract: An apparatus for displaying the driving direction and distance coverage of a motor vehicle, wherein a unit distance coverage signal is generated each time the motor vehicle covers a unit distance, a direction signal indicating the present driving direction of the motor vehicle is generated, and the distance and the direction from a starting point to a destination point can be set and the resulting setting signals are generated. The distance coverage for each driving direction of the motor vehicle is accumulated on the basis of the unit distance coverage signals and the direction signals, and from the accumulated values the vector from the starting point to the present position is calculated. The calculated vector and the vector from the starting point to the destination point which is obtained from the setting signals are used to calculate the vector from the present position to the destination.
    Type: Grant
    Filed: April 10, 1981
    Date of Patent: January 4, 1983
    Assignees: Nippondenso Co., Ltd., Nippon Soken, Inc.
    Inventors: Akira Kuno, Muneaki Matsumoto, Koji Numata, Susumu Urano
  • Patent number: 4366350
    Abstract: A telephony system with automatic test calling. Test access circuitry connected to port circuits enables the test call circuit to select actual ports for a test call and monitor the test call signals. Test calls are initiated either on a periodic basis on in resonse to a fault condition. Any portion of the telephony system therefore can be used in a test call.
    Type: Grant
    Filed: March 10, 1980
    Date of Patent: December 28, 1982
    Assignee: Stromberg-Carlson Corporation
    Inventors: Ernest O. Lee, Wayne G. Smith, George C. Hanson
  • Patent number: 4365250
    Abstract: A garage door operation control apparatus includes a door operating system for opening and closing the main door of a garage, a main detection circuit for detecting the open or closed condition of the main door, an auxiliary detection circuit for detecting an open condition of a window or an auxiliary door of the garage, a fire in the garage or generation of a special gas therein, an alarm and a signal processing circuit. Electrical signals from the detection circuit are logically analyzed thereby to control the door operating system and the alarm.
    Type: Grant
    Filed: April 15, 1980
    Date of Patent: December 21, 1982
    Assignee: Hitachi, Ltd.
    Inventors: Shigeru Matsuoka, Takeshi Tokunaga, Seiji Yonekura, Mituo Suzuki, Kenji Nakamura
  • Patent number: 4365247
    Abstract: The system relieves a transmission working line included in a bidirectional digital link having N working lines and P spare lines between two end stations. In response to the detection of a transmission fault on the working line, the switching units of the stations perform a first exchange of order signals via a selected free spare line, and then a first switch-over of the data related to the faulty working line to the spare line. After the faulty working line has been repaired, to prevent continued data transmission along the spare line, a second exchange of order signals triggers a second switch-over so the system reverts to normal operation. The second exchange of order signals takes place along the repaired line while data related to the repaired line continues to be transmitted via the spare line. During the repair of the preceding faulty working line, a relief procedure of a high priority working line may take place via the selected spare line.
    Type: Grant
    Filed: January 7, 1981
    Date of Patent: December 21, 1982
    Assignee: Societe Anonyme de Telecommunications
    Inventors: Gilbert L. Bargeton, Claude P. Beynie
  • Patent number: 4365251
    Abstract: A register is coupled to a rotor which is driven in stepped rotation by magnetic fluxes directed through electromagnetic pole pieces of a stator. The pole pieces carry coil windings which produce the magnetic fluxes by being sequentially and discretely energized by a circuit responsive to pulse signals, each pulse signal representing a quantum of a quantity to be measured.
    Type: Grant
    Filed: December 4, 1980
    Date of Patent: December 21, 1982
    Assignee: Westinghouse Electric Corp.
    Inventor: Robert C. Miller
  • Patent number: 4365232
    Abstract: An emergency lighting unit having a electroluminescent lamp is provided for se in locating an aircraft exit. The emergency lighting unit contains a battery and an inverter for converting DC battery current to high frequency alternating current required for illumination of the electroluminescent lamp. Various means are provided for automatically lighting the lamp during a distress situation. The lighting unit is configured to serve as a handle for use in leaving a disabled aircraft.
    Type: Grant
    Filed: March 23, 1981
    Date of Patent: December 21, 1982
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventor: George R. Miller
  • Patent number: 4365248
    Abstract: The system triggers the relief of a working line amongst N working lines in a bidirectional digital transmission link having at least one spare line. The link is interconnected between two end stations (A, B) which allow a switch-over between a faulty working line and a spare line. The relief of a working line is triggered in response to the detection of an alarm indication signal (AIS) delivered by any end or intermediary terminal included in the working line. An AIS coming from outside the link and related to the working line is detected in an end station and replaced by a switching inhibiting signal that is transmitted via the working line, or perhaps via a spare line, should the working line be faulty and previously relieved, and that is detected in the other station and then replaced by an AIS transmitted outside the link in relation to the other station.
    Type: Grant
    Filed: January 7, 1981
    Date of Patent: December 21, 1982
    Assignee: Societe Anonyme de Telecommunications
    Inventors: Gilbert L. Bargeton, Claude P. Beynie
  • Patent number: 4364045
    Abstract: A displacement measuring transducer performs a direct conversion of changes in physical position, particularly angular position, into a digital form suitable for input to a digital microprocessor. The transducer is of the inductive type. Two inductance legs are connected at a common input to form a three-terminal bridge device. To sense positional changes, a step voltage is applied to the input and the transient response at the output of each leg is sampled periodically. Digital circuitry compares the responses of each leg to a fixed reference voltage and produces a binary digital count proportional to the motion sensed by the transducer. This transducer provides high resolution and low noise over a wide dynamic range. It also allows temperature compensation and scale factor calibration.
    Type: Grant
    Filed: March 3, 1981
    Date of Patent: December 14, 1982
    Assignee: Northrop Corporation
    Inventor: Leo Spiegel
  • Patent number: 4363933
    Abstract: This invention relates to a method and apparatus for automatically decoding and monitoring Morse code identifying call letters of radio navigation aids commonly in use for both aircraft and marine transportation, e.g. VOR--very high frequency omni range, ILS--instrument landing system, NDB--non directional beacons, and DME--distance measurement equipment.
    Type: Grant
    Filed: November 10, 1980
    Date of Patent: December 14, 1982
    Inventor: John E. Mercer