Patents Examined by Thomas A. Robinson
  • Patent number: 4381094
    Abstract: The signal term to be transmitted to a railroad traction vehicle is formed in a signaling system in that each element, from a destination element back to a start element has a respective top speed assigned thereto as an identification. The identification is transmitted element-by-element back to the start element and is devalued during relaying thereof when the identification is greater than that prescribed for a travel path element having a lower assigned top speed so that the identification received at the start element indicates the top speed admissible for the route. The admissible top speed is then converted into a corresponding signal term.
    Type: Grant
    Filed: January 8, 1981
    Date of Patent: April 26, 1983
    Assignee: Siemens Aktiengesellschaft
    Inventors: Horst-Guenter Gnest, Wolfgang-Dieter Granzow, Hans-Otto Hartkopf, Adalbert Zillmer
  • Patent number: 4381506
    Abstract: To provide a rugged vibration and shock-insensitive position transducer, a coil is wound on a lamella-like carrier which has a body element of electrically insulating material on which, at least on one surface, a foil of magnetically highly permeable material is positioned; these lamella-foil combinations can be stacked, or a unitary body which foils on both sides can be provided. A short-circuit ring, movable along the core, changes the inductance of the coil wound thereon, the value of which can be determined by energizing the coil with alternating current.
    Type: Grant
    Filed: December 11, 1980
    Date of Patent: April 26, 1983
    Assignee: Robert Bosch GmbH
    Inventors: Karl-Otto Linn, Walter Jansche, Dietrich Adolph, Artur Dannemann
  • Patent number: 4381427
    Abstract: A subscriber loop system in association with a TDM telephone system provides voice and data communication with a remote telephone station set and an associated data port. The subscriber loop system includes a voice path and a data path. Supervisory and signalling circuits in the telephone set are used for generating and registering call control signals pertaining to both voice and data calls. The call control signals are labelled and multiplexed with data signals by local and remote line interface circuits for transmission therebetween. A codec in the voice path is caused to couple call progress signals (i.e. dial tone, ring back) to the telephone set during a data call progress, for audible signalling to a user.
    Type: Grant
    Filed: June 16, 1981
    Date of Patent: April 26, 1983
    Assignee: Northern Telecom Limited
    Inventors: William E. Cheal, Gokal C. Gupta, Faramarz Sepahmansour, Avnish K. Aggarwal
  • Patent number: 4380763
    Abstract: A system for detecting and measuring corrosive reaction of metals in an environment. The system includes: a remotely placeable sensor head containing a galvanic couple made of metals identical to those involved in the corrosion problem, with the couple coiled in the shape of a sprial; and, operatively associated electronic circuitry to amplify, integrate, and store in a non-volatile memory, e.g., a bubble type memory, for future recall the amount of galvanic current that is flowing and that has flowed when corrosion is, or has been, occurring.
    Type: Grant
    Filed: January 6, 1981
    Date of Patent: April 19, 1983
    Assignee: The United States of America as represented by the Secretary of the Air Force
    Inventors: Leland L. Peart, John Farrar
  • Patent number: 4380764
    Abstract: A data acquisition circuit is disclosed which provides sampled input voltage signals generated in a hostile environment to an input device, for example, the input circuitry of a computer. The data acquisition circuit provides electrical isolation to prevent damage to the input circuitry caused by electrical transients and short circuits occurring in the hostile environment and is particularly useful for sampling input data from thermocouples because it eliminates the need for an isolated power supply normally used to detect broken thermocouples.
    Type: Grant
    Filed: March 12, 1981
    Date of Patent: April 19, 1983
    Assignee: Data Translation, Inc.
    Inventor: Stephen A. Connors
  • Patent number: 4380004
    Abstract: A low-pass filter passes a spectrum of electrical signals which are utilized to establish a threshold level with which electrical signals having frequencies in a relatively higher range are compared to determine if a warning sound is present in the sounds in the vicinity of a receiver unit for receiving the ambient sound. If the rectified magnitude of the signals having the higher frequencies exceeds the rectified and variably adjusted magnitudes of the signals having lower frequencies, a visual indication is given to communicate the existence of a warning sound in the ambient sounds.
    Type: Grant
    Filed: March 19, 1981
    Date of Patent: April 12, 1983
    Inventors: Montgomery R. Coats, Gwen V. Janssen
  • Patent number: 4380063
    Abstract: In a communication network comprising block switching nodes interconnected by transmission links, a flow control mechanism is provided in each switching node for regulating the flow of addressed data blocks or messages. A hardware look-ahead mechanism effective within each node tests for each data block received from a link and buffered at an input port, whether it can be accepted at the appropriate output port of the same node for further transmission. A token mechanism effective over links permits maintenance at each output port of a node of an indication whether any data block can be accepted in the input port at the other end of the respective link. By the combined operation of look-ahead mechanisms and token mechanisms the flow of addressed messages in a direction where the transmission path is already filled up is prevented. This has a positive smoothing effect on overall traffic flow where short-time or local overloads occur.
    Type: Grant
    Filed: June 10, 1981
    Date of Patent: April 12, 1983
    Assignee: International Business Machines Corp.
    Inventors: Philippe A. Janson, Hans R. Muller, Ernst H. Rothauser
  • Patent number: 4380007
    Abstract: The proximity switch has a capacitive sensor which comprises a metallic support mounted on a printed circuit board and supporting, on a surface parallel to said board but facing away from it, a layer made of electrically conductive foam material. The latter nestles against a cover plate made of glass which provides the dielectric of a capacitive sensor actuatable by the stray field of the mains. When this alternating stray field is concentrated by a part of a human body brought into the vicinity of the sensor, the latter will actuate an electronic switch connected to it.
    Type: Grant
    Filed: May 27, 1981
    Date of Patent: April 12, 1983
    Assignee: Playmont AG
    Inventor: Walther Steinegger
  • Patent number: 4380061
    Abstract: A double loop transmission system is provided in which not only bypass routes but also terminals are connected with a pair of transmission control units of each loop. In this manner, the transfer of a message is controlled by both the information concerning whether the smaller loop formed by a pair of the adjacent transmission control units is abnormal or not and the bypass code data contained in the message. The transmission can thus be continued no matter which loop has its transmission control units disordered. And the transmission between the terminals can be performed by the construction and reconstruction of the bypass routes when a loop which has been disordered is restored.
    Type: Grant
    Filed: July 9, 1981
    Date of Patent: April 12, 1983
    Assignee: Hitachi, Ltd.
    Inventors: Kinji Mori, Hirokazu Ihara, Hiroshi Matsumaru
  • Patent number: 4378553
    Abstract: An electromechanical interactive terminal system is disclosed, utilizing a split keyboard to accommodate convenient use, even by disabled or infirm persons. The elements of a conventional typewriter (or console) keyboard are provided in two separate and distinct keyboard units, one of which includes the keys normally activated by the right hand while the other has the keys conventionally assigned for use by the left hand. Control and coding keys are similarly assigned. The two separate keyboard units can be used in various positions as by being affixed to a support member so as to be held in spaced-apart relationship, contiguous to the hands of an operator with his arms apart and supported at rest. The keyboard units each incorporate electrical apparatus for providing electrical signals representative of data symbols associated with the keys. Additionally, certain keys are coded to provide control signals used in association with display means, a data processor, and a printer.
    Type: Grant
    Filed: March 13, 1981
    Date of Patent: March 29, 1983
    Inventor: William C. McCall
  • Patent number: 4378465
    Abstract: Apparatus is disclosed for generating a signal representative of a co-ordinate position of a movable indicating member, the member being constructed for interacting magnetically with sensing coils. The apparatus includes a plurality of sensing coils (2 to 11) for interacting magnetically with such a member, the coils being positioned substantially in or adjacent to a real or imaginary surface in or adjacent to which such an indicating member may be moved, the sensing coils being positioned to divide an area of interest in the surface into regions, each of the coils encircling part of the area of interest and having conductors in the area substantially along region boundaries only, each of the regions being within an arrangement of the sensing coils particular to that region. A further coil (1) is positioned substantially in or adjacent to the real or imaginary surface and surrounds the entire area of interest.
    Type: Grant
    Filed: October 29, 1980
    Date of Patent: March 29, 1983
    Assignee: Image Data Products Limited
    Inventors: David J. Green, John A. Gordon, David Edge
  • Patent number: 4377741
    Abstract: Apparatus for producing updated information on a tangible medium including a hand-held type instrument having an optical character reader to read present information on the medium, a programmable bus-oriented computing type network, spaced from the instrument, which stores and compares the updated information with the present information being read and which outputs control words corresponding to the updated information if the updated information is different from the present information, and an ink jet printer, included in the hand-held type instrument, which prints the updated information on the medium in response to the control words. The computing type network can include a micro-computing unit which can be a microprocessor, for example, and memory units which can be RAM, ROM, etc.
    Type: Grant
    Filed: June 26, 1980
    Date of Patent: March 22, 1983
    Assignee: The Brekka Corporation
    Inventors: Thomas T. Brekka, Frank F. Stucki
  • Patent number: 4376280
    Abstract: A system for monitoring the internal conditions in a rotary kiln is disclosed wherein a series of sensors, such as thermocouples, are installed in ports at various longitudinal and angular coordinates along the total length of the kiln for providing temperature signal samples in the form of sequenced millivolt signals, and a single thermocouple is provided which is insertable in a second series of ports along the kiln to permit immediate localized temperature sensing. The sequenced millivolt signals and the single thermocouple millivolt signals are both fed to respective millivolt-to-milliamp converters mounted on a heat shield on the kiln surface, which shield also mounts two sets of continuous slip rings encircling the kiln. The respective milliamp signals are communicated from the converters to the respective slip ring sets from which they are picked off by suitable stationary contact means disposed adjacent the kiln and conducted to appropriate recorders in a control room.
    Type: Grant
    Filed: April 1, 1981
    Date of Patent: March 8, 1983
    Assignee: The Direct Reduction Corporation
    Inventors: Richard H. Davis, Brian F. Bracanin, Ronald J. Clements
  • Patent number: 4375097
    Abstract: A transparent intelligent communication network having nodes and communication links between the nodes and providing improved system input features by including the sampling of customer inputs at different rates according to their output rates of data at the exit node or at faster rates if there is a spare channel capacity available.
    Type: Grant
    Filed: May 15, 1980
    Date of Patent: February 22, 1983
    Assignee: Texas Instruments Incorporated
    Inventor: Mehmet E. Ulug
  • Patent number: 4374383
    Abstract: A rotational shaft home position sensing transducer is provided which comprises a rotor mounted on the shaft having a planar surface with a first radial array of conductive elements on the surface in combination with a fixedly mounted stator having a planar surface parallel to the planar rotor surface and a second corresponding radial array of conductive elements on the stator surface adjacent and spaced from the first array. The structure further contains a unit for applying an alternating electrical signal to the first array of elements and a unit connected to the second array of elements for sensing the capacitive effect induced in the second array by said electrical signal. The first and second arrays must be arranged so that a single home position in the relative motion between the rotor and stator will induce a single unique capacitive effect in the second plurality of elements.
    Type: Grant
    Filed: December 22, 1980
    Date of Patent: February 15, 1983
    Assignee: International Business Machines Corporation
    Inventors: Darryl R. Polk, Errol R. Williams, Jr.
  • Patent number: 4373691
    Abstract: A decoupling arrangement for non-insulated track circuits is disclosed wherein the receiving circuit of the evaluating unit for the AC track currents is electrically separated from the traction-current-carrying parts of the track. The cross bonds between the two rails of a track may be shorting bonds or so-called S bonds. The arrangement according to the invention improves the tuning behavior of the track circuit receivers considerably.
    Type: Grant
    Filed: December 8, 1980
    Date of Patent: February 15, 1983
    Assignee: International Standard Electric Corporation
    Inventors: Hans Fricke, Jurgen Kiess, Lutz Schulmeyer
  • Patent number: 4374382
    Abstract: A marker channel telemetry system for use with a pacemaker or other medical device for transmitting event identifying codes to a remote receiver to indicate the occurrence of specific events such as sensed and paced events in a dual chamber pacemaker. The structure of the system includes latches to store event information and for forming the marker codes. The system also includes a serial telemetry transmitter for transmitting the data to the remote receiver.
    Type: Grant
    Filed: January 16, 1981
    Date of Patent: February 15, 1983
    Assignee: Medtronic, Inc.
    Inventor: Harold T. Markowitz
  • Patent number: 4373114
    Abstract: A photoelectric circuit for reading punched data tape wherein the circuit compensates for variations in phototransistors and light emitting diodes, dust accumulation and degradation of the light emitting diodes by comparing the light transmitted through a punched section of the tape to the light transmitted through a solid section of the tape.
    Type: Grant
    Filed: August 6, 1979
    Date of Patent: February 8, 1983
    Assignee: Teletype Corporation
    Inventor: Wayne R. Herbst
  • Patent number: 4373120
    Abstract: A line test termination device to provide a characteristic signature recognizable by the telephone central office when a continuity test is made on a subscriber line having a pair of electrically conductive paths includes a resistor and a diode connected in series between the conductive paths. A neon tube device placed in series with the resistor and diode will be illuminated when a ringing voltage is applied to the line and no telephone ringing circuit is connected thereto.
    Type: Grant
    Filed: January 13, 1981
    Date of Patent: February 8, 1983
    Assignee: TII Industries Inc.
    Inventor: Gerald F. McDonald
  • Patent number: 4371756
    Abstract: An improved telephone circuit module incorporating a bridge lifter switching means which permits direct connection of party line subscriber circuits to a terminal block with the elimination of prior art saturable bridge lifters normally mounted upon a main distributing frame, and accompanying cable runs. The bridge lifter module comprises a solid state thick film circuit formed upon a ceramic substrate, suitably encapsulated, and is sufficiently small in overall size to fit within a connecting module which engages a part of a housing, and electrically conductive wire wrap terminals of certain types of known connector blocks.
    Type: Grant
    Filed: February 27, 1981
    Date of Patent: February 1, 1983
    Assignee: Porta Systems Corp.
    Inventor: Michael C. Fasano