Patents Assigned to ITT
  • Patent number: 4817030
    Abstract: To a prior art CMOS full-adder stage having sixteen transistors, a static inverter is added which consists of a P-type transistor and an N-type transistor, and the series combination (sc) of P- and N-type transistors is wired symmetrically. This increases the processing frequency, because the carry-signal path is no longer loaded by the four transistors contributing to the summation.
    Type: Grant
    Filed: March 20, 1987
    Date of Patent: March 28, 1989
    Assignee: Deutsche ITT Industries GmbH
    Inventors: Peter Lee, Ulrich Theus
  • Patent number: 4815534
    Abstract: A plate heat exchanger in which the various plates from which it is fabricated are brazed together in a stacked assembly comprised of flow plates and heat transfer plates arranged in alternating relationship. The heat exchanger has inlets and outlets for two fluids with passage networks extending between the inlets and outlets and turbulator members are located in each flow cavity formed between adjacent surfaces of the heat transfer and flow plates. The turbulator members are interchangeably positionable between each pair of adjacent flow and heat transfer plates and are selectable from a plurality of differently configured turbulator members. Plate sizes, shapes and openings therein are standardized to provide a basic heat exchanger system which can be fabricated in easily modified embodiments to meet various and diverse heat exchange requirements.
    Type: Grant
    Filed: September 21, 1987
    Date of Patent: March 28, 1989
    Assignee: ITT Standard, ITT Corporation
    Inventor: Raymond F. Fuerschbach
  • Patent number: 4816967
    Abstract: A method and structure are disclosed for mounting and connecting an electic device such as an integrated circuit to a circuit board. The board has a plurality of embedded shielded conductors for interconnecting the integrated circuit to other devices on the board. In order to limit the capacitance and inductance of the connection, the integrated circuit is mass bonded directly to the conductors and to their coaxial shields.
    Type: Grant
    Filed: October 28, 1987
    Date of Patent: March 28, 1989
    Assignee: ITT Gallium Arsenide Technology Center A Division of ITT Corporation
    Inventor: Richard C. Landis
  • Patent number: 4817167
    Abstract: A method and a circuit arrangement for receiving frequency-modulated stereo multiplex signals is disclosed in which the channel to be received is converted to the zero IF using negative feedback for reducing the frequency deviation in the IF band. The conversion takes place in a quadrature converter stage, and adjacent-channel selectivity is provided by low-pass filtering the two outputs of the quadrature converter stage, with the slopes of the selectivity characteristics of the two low-pass filters being relatively slight and lying partly in the zero IF band. The amount of the average attenuation of the frequency-modulated stereo subcarrier signal is equal to the amount of the reduction of the frequency deviation of the frequency-modulated main-channel signal. The negative-feedback signal is the demodulated main-channel signal, the amount of negative feedback being determined by an amplifier in the negative-feedback path.
    Type: Grant
    Filed: July 15, 1987
    Date of Patent: March 28, 1989
    Assignee: Deutsche ITT Industries GmbH
    Inventor: Gerhard-Guenter Gassmann
  • Patent number: 4813769
    Abstract: A liquid crystal wave division device includes first and second polarization changing cells, the polarization changing cells utilize homogeneously aligned nematic liquid crystal material to effect the change of polarization of a preselected frequency portion of a multifrequency incident light beam.
    Type: Grant
    Filed: November 5, 1985
    Date of Patent: March 21, 1989
    Assignee: ITT Defense Communications, a division of ITT Corporation
    Inventor: Anthony P. Baker
  • Patent number: 4814780
    Abstract: The variable directional coupler of the subject invention employs 3, 4 or n branches in TEM transmission media, such as coax, stripline and microstrip. Precise control of the coupling is acheived by a variable susceptance connected near the mid-point of the crossover.
    Type: Grant
    Filed: March 11, 1988
    Date of Patent: March 21, 1989
    Assignee: ITT Gilfillan, a division of ITT Corporation
    Inventors: William G. Sterns, Ching-Fai Cho
  • Patent number: 4814836
    Abstract: A photoconductor comprising an optically sensitive FET in which an abrupt heterojunction (18) is inserted in the channel (11) at a certain distance from the gate contact (16). This provides a potential barrier (17, FIG. 4) in the valence band that accumulates minority carriers (carriers of the lower mobility type) and controls their release. A gate bias resistor which is conventionally used in a receiver circuit including the FET is no longer required, instead the potential barrier height determines the time constant and a response comparable in length with an input optical pulse is achieved. This overcomes the problems of integrated manufacture, and slow response, associated with the large value of the bias resistor which is needed to reduce noise.
    Type: Grant
    Filed: March 20, 1986
    Date of Patent: March 21, 1989
    Assignee: ITT Gallium Arsenide Technology Center A Division of ITT Corporation
    Inventor: George H. B. Thompson
  • Patent number: 4814779
    Abstract: A radar system with auxiliary scanning provision for providing more dwell time on target, the system having a main frequency scan antenna with electronic or mechanical arrangements for auxiliary scanning. In the electronic embodiment, a space fed phased-array auxiliary antenna is provided, the radiating elements being interconnected with diode phase shifters, which are electronically actuated and synchronized to the antenna rotation. In the mechanical embodiment, a multi-sided prism arrangement in front of the antenna rotates in synchronism in a counter direction to the antenna, with auxiliary scanning data electronically manipulated for processing.
    Type: Grant
    Filed: March 25, 1987
    Date of Patent: March 21, 1989
    Assignee: ITT Gilfillan, a division of ITT Corporation
    Inventor: Arnold M. Levine
  • Patent number: 4812137
    Abstract: A connector is described, which includes a radio interference shield in the shell assembly, and yet which has a shell assembly whose forward portion can fit into a very narrow space. The shell assembly includes a shell (14, FIG. 2), a sheet metal hood (30) extending forwardly from the shell to receive another connector, and a sheet metal shield (34) lying on the inner shide of the hood. The hood has a forward end (46) extending in a short loop, while the shield has a forward end (58) extending in a loop immediately rearward of the hood loop. The shield includes an outer portion (54) extending along the inner surface of the hood, and a resilient inner portion (56) that forms spring fingers (62) that contact the other connector and that have tips (78) that make facewise contact with the outer portion of the shield.
    Type: Grant
    Filed: November 25, 1987
    Date of Patent: March 14, 1989
    Assignee: ITT Corporation
    Inventors: Albert H. Wilson, David E. Welsh
  • Patent number: 4812129
    Abstract: A surface mount connector in which contacts mounted in two or more rows of contact passages have tails bent so that their end portions lie in a common plane for engaging traces on a printed circuit board. Each contact is a two piece part. The two parts are mounted in the corresponding contact passage from the opposite end faces of the insulator, so that the tails may be bent during the forming of the rear parts of the contacts rather than after mounting of the contacts in the passages. A retention arrangement is provided between the front and rear parts of the contacts which allows either a permanent connection between the parts, or a releasable connection so that the front and rear parts of the contacts may be removed from the passages and replaced if necessary.
    Type: Grant
    Filed: August 6, 1987
    Date of Patent: March 14, 1989
    Assignee: ITT Corporation
    Inventors: David Rofer, Peter J. Hyzin, Thomas W. Conrad
  • Patent number: 4812809
    Abstract: A circuit checks for coincidence of a data word with a reference data word by means of EXOR gates per digit of the two data words, and a non-coincidence is permitted in a number of digits (m). The output signal that appears at the output of the circuit is the result of the current flowing therein, with the sign thereof being indicative of either a coincidence or a non-coincidence. For this purpose, the individual outputs of the EXOR gates serve to activate switch transistors with the aid of which standard currents (i) are caused to flow from the output, via an N-multiple current source, to the zero point of the circuit (ground). On the other hand, via a first P-current mirror, a current mi and, via a second P-current mirror, a current i/2 are fed to the output. By means of the N-multiple current source, the current mi is impressed upon the current input of the first P-current mirror.
    Type: Grant
    Filed: March 23, 1987
    Date of Patent: March 14, 1989
    Assignee: Deutsche ITT Industries GmbH
    Inventors: Paul O'Leary, Hans-Josef Orben
  • Patent number: 4811399
    Abstract: An apparatus for automatic speech recognition includes a plurality of processors, including template processors in which there are stored templates representative of both speech and non-speech sounds. Incoming sounds are continuously converted into digital signals in respective frames representative of speech and non-speech sounds, respectively. Sequences of such frames are compared with both the speech and non-speech templates to determine the closest matches. Endpoints of respective speech utterances are determined in response to the detection of respective non-speech-speech-non-speech sequences, whereupon such speech utterances are processed to recognize the same.
    Type: Grant
    Filed: June 14, 1988
    Date of Patent: March 7, 1989
    Assignee: ITT Defense Communications, a Division of ITT Corporation
    Inventors: Blakely P. Landell, Robert E. Wohlford
  • Patent number: 4811425
    Abstract: Apparatus for reducing the effects of mixer leakage in a zero IF transmission system includes first and second mixers having relatively equal leakage amounts from an oscillator port to an input port, with the input port of said first mixer adapted to receive a zero IF receiver input signal and with the output port of said first mixer capacitively coupled to the input port of the second mixer. The oscillator ports of the first and second mixers are coupled to a local oscillator output, with the output ports of said first and second mixers coupled respectively to an adder and subtractor circuit to provide respectively a DC signal indicative of the leakage and an output signal indicative of the magnitude of said input signal as effected by leakage to thereby enable the determination of said input signal after mixing.
    Type: Grant
    Filed: January 9, 1987
    Date of Patent: March 7, 1989
    Assignee: ITT Avionics, a division of ITT Corporation
    Inventor: Irwin Feerst
  • Patent number: 4809558
    Abstract: A method and apparatus for increasing the resolution and accuracy of flow measurements made by vortex flowmeters. A signal conditioning circuit connected to a vortex sensor generates a vortex signal having a period that varies with the frequency of the vortex street. The period of this vortex signal is measured by a period sampling circuit, which generates a vortex period signal. When a programmable control circuit determines that the change in the frequency indicated by successive values of the vortex period signal is relatively small, the displayed flow value is based on the current frequency of the vortex signal; when the change in frequency indicated by successive values of the vortex period signal is relatively large, the displayed flow value is based on the running average frequency of the vortex signal.
    Type: Grant
    Filed: February 27, 1987
    Date of Patent: March 7, 1989
    Assignee: ITT Corporation
    Inventors: Christopher A. Watson, Howard G. Fox, Tuyen Q. Nguyen
  • Patent number: 4810912
    Abstract: A current switch for use in digital-to-analog converters having high dynamic accuracy includes first and second electronic switches, the first of which connects either a constant-current source or a constant-current sink to an output terminal. The output terminal is connected to a low-pass filter. When the constant-current source is connected to the output terminal, the second switch connects the constant-current sink to a reference-voltage source. When the constant current sink is connected to the output terminal, the second electronic switch connects the constant current source to the reference-voltage terminal. This antiphase switching of the two electronic switches is controlled by a control circuit to which a clocked signal and a clock signal are applied. The clocked signal is, for example, a pulse-density-modulated signal which appears as a demodulated signal at the output of the low-pass filter.
    Type: Grant
    Filed: November 13, 1987
    Date of Patent: March 7, 1989
    Assignee: Deutsche ITT Industries GmbH
    Inventors: Ulrich Theus, Paul O'Leary
  • Patent number: 4809143
    Abstract: A vehicle light including several incandescent lamps which are inserted in sockets of plastic lamp holder by means of the lamp base or cap which forms the connection for the incandescent lamp. A lug is punched from a thin sheet metal billet in one piece with a lead for the respective incandescent lamp and is bent towards the bottom of the socket and squeezed between the base or cap and the socket by a spring.
    Type: Grant
    Filed: May 17, 1988
    Date of Patent: February 28, 1989
    Assignee: ITT Industries, Inc.
    Inventors: Rolf Feger, Gunther Holzmacher
  • Patent number: 4809059
    Abstract: In a chroma control circuit for a digital television receiver, the system clock lies in the range of four-times the chrominance-subcarrier frequency. The originally received color-burst signal is locked in frequency and phase to the system clock by means of an all-digital phase-locked loop. The phase-difference angle between the color-burst signal and the system clock appears as a sine or cosine value in the two standard color-difference signals of the chrominance demodulator during the reception of the color-burst signal. One of the standard color-difference signals, the B-Y signal, is fed through a horizontal-frequency-suppressing loop filter to a digital oscillator. The latter determines the speed of rotation of a hue adjustment angle rotating at approximately constant angular speed.
    Type: Grant
    Filed: December 19, 1986
    Date of Patent: February 28, 1989
    Assignee: Deutsche ITT Industries GmbH
    Inventors: Peter M. Flamm, Laurin C. Freyberger
  • Patent number: 4808040
    Abstract: A submersible mixer support system for use in sewage treatment systems and the like has parallel tubular guide bars supporting at least one mixer stand unit having a slow rotation, large propellered mixer thereon. The mixer stand unit is releasably clamped to the parallel guide bars by clamping units each having a horseshoe-shaped resilient clamping block deformable when a clamping pressure is applied thereto by a preload assembly located remotely therefrom. The mixer support system facilitates removal and servicing of the various subassemblies located thereon. A guide system is provided in order to remove, inspect and reinstall the tubular guide bars.
    Type: Grant
    Filed: October 20, 1987
    Date of Patent: February 28, 1989
    Assignee: ITT Corporation
    Inventor: Dominic A. Lisi
  • Patent number: 4808118
    Abstract: A metal clip is described which retains a modular insert containing an insulator body with contacts thereon, in a shell of a connector, while also providing a ground plane and shield against electromagnetic interference. The clip includes a flat middle portion that extends across most of the width of the connector and a pair of opposite ends bent out of the plane of the middle portion and having edges that abut shoulders formed on the shell and that press against shell surfaces lying adjacent to the shoulders. The flat middle portion lays facewise against a face of the insulator body of the connector to prevent movement of the insulator body and contacts therein. The middle portion of the clip spans most of the area within the shell to provide an electromagnetic shield that is electrically terminated to the shell.
    Type: Grant
    Filed: November 25, 1987
    Date of Patent: February 28, 1989
    Assignee: ITT Corporation
    Inventors: Albert H. Wilson, David E. Welsh
  • Patent number: 4807942
    Abstract: The hydraulic brake system with slip control comprises two master cylinder pistons for the operation of the vehicular brakes and in which hydraulic medium tapped from the wheel brake during slip control is returned to the wheel brakes from an auxiliary pressure source via a master cylinder piston gasket acting as check valves. The operating stroke of the master cylinder pistons is limitable by suitable pressurization of a positioning piston. An open connection between the working chambers of the master cylinder and a reservoir is provided, in the brake-released position, solely via the control valve so as to enable the brake circuits connected with the master cylinder to be pressurized right from the beginning of the braking action.
    Type: Grant
    Filed: May 16, 1983
    Date of Patent: February 28, 1989
    Assignee: ITT Industries, Inc.
    Inventor: Juan Belart