Patents Represented by Attorney Donald J. Lenkszus
  • Patent number: 4581076
    Abstract: Ions are selectively implanted into layers of a semiconductor substrate of, for example, semi-insulating gallium arsenide via a photoresist implantation mask and a metallic layer of, for example, titanium, disposed between the substrate surface and the photoresist mask. After implantation the mask and metallic layer are removed and the substrate heat treated for annealing purposes. The metallic layer acts as a buffer layer and prevents possible contamination of the substrate surface, by photoresist residues, at the annealing stage. Such contamination adversely affects the electrical properties of the substrate surface, particularly gallium arsenide substrates.
    Type: Grant
    Filed: April 5, 1984
    Date of Patent: April 8, 1986
    Assignee: ITT Industries, Inc.
    Inventor: Mohamed H. Badawi
  • Patent number: 4580247
    Abstract: A semiconductor memory cell includes a source-drain series connection of several memory transistors each comprising electrically floating gates and being of the depletion type, with a selection transistor being disposed between a first bit line and a second bit line. The memory cell remains programmable as long as one of the series-arranged memory transistors has an injector oxide free from defects. The memory transistors having an injector oxide damaged by a breakdown are not programmable but do not affect the programmability of the respective semiconductor memory cell.
    Type: Grant
    Filed: May 1, 1985
    Date of Patent: April 1, 1986
    Assignee: Deutsche ITT Industries GmbH
    Inventor: Fritz G. Adam
  • Patent number: 4578600
    Abstract: A CMOS logic input circuit comprises two complementary transistor pairs, TR1 and TR2; TR3 and TR4 coupled in series between the supply rails. The gates of n-channel transistor TR4 and p-channel transistor TR1 are coupled to the positive and negative supply rails respectively. A switching function is performed by TR2 and TR3.The arrangement is such that the switching threshold is substantially independent of transistor characteristics.
    Type: Grant
    Filed: January 25, 1983
    Date of Patent: March 25, 1986
    Assignee: ITT Industries, Inc.
    Inventor: Terence E. Magee
  • Patent number: 4578705
    Abstract: A digital synchronization operation circuit synchronizes a pulse train with horizontal synchronizing pulses contained in a received standard television signal which, after being demodulated in the television receiver, is present as the composite color signal and which is fed to an analog-to-digital converter clocked by a clock signal. The digital synchronization separation circuit has an improved phase resolution such that the phase resolution is greater than the resolution provided by the pulse width of clocking signals.
    Type: Grant
    Filed: March 23, 1984
    Date of Patent: March 25, 1986
    Assignee: ITT Industries, Inc.
    Inventors: Herbert Elmis, Reiner Backes
  • Patent number: 4573136
    Abstract: In a sum-of-products multiplier, such as is used in a digital filter, it is desired to be able to produce the sum of a number of independent multiplications of binary numbers each representing a signal value, i.e. ##EQU1## where v is the sum of products, u.sub.j are the inputs and a.sub.j are weighting coefficients by which the inputs are to be multiplied. A known multiplier functions on the basis of precomputed weighting coefficients stored in a memory but this needs a very large memory and the pre-computation needs a complex device with many adders.In the novel device the memory is split into two (or more) sub-memories between which the pre-computed coefficients are shared. The coefficients are extracted for use if an input digit is 1 (but not if it is 0) and are passed via an adder where they will add to the coefficients from the other sub-memory and passed to an accumulator/shifter whose content is shifted after each digit place and whose output is the sum of products.
    Type: Grant
    Filed: September 30, 1982
    Date of Patent: February 25, 1986
    Assignee: ITT Industries, Inc.
    Inventor: Timothy J. M. Rossiter
  • Patent number: 4572979
    Abstract: A windshield wiper motor is disclosed in which there is a gear mechanism in a one piece plastic housing. The gear housing also houses the electrical terminals for the motor brushes and the brush springs. All these elements are placed in the one piece plastic housing.
    Type: Grant
    Filed: April 2, 1985
    Date of Patent: February 25, 1986
    Assignee: ITT Industries, Inc.
    Inventors: Gerhard Haar, Heinz Jakob, Hans Prohaska, Theodor Schneider, Karl-Friedrich Schubert, Werner Wohrle
  • Patent number: 4571701
    Abstract: There is disclosed a multiplier structure including elementary multipliers and a matrix of binary adder cells of the high-speed carry propagation type associated with the elementary multipliers. The intermediate results to be added are transferred along a matrix diagonal from each adder cell to an adder cell p lines and p columns distant therefrom, where p is a whole number greater than one. The matrix of binary adder cells does not contain cells associated with the first p lines and columns of elementary multipliers and is supplemented by p-1 columns or lines of additional cells on the output side of the matrix furnishing the least significant bits and by p lines or columns of additional cells on the output side of the matrix furnishing the most significant bits. The additional adder cells serve to gather the intermediate results furnished by the adder cells of the p adjacent columns and lines of the associated matrix in order to produce the bits of the final product.
    Type: Grant
    Filed: March 18, 1983
    Date of Patent: February 18, 1986
    Assignee: International Standard Electric Corp.
    Inventor: Claude P. H. Lerouge
  • Patent number: 4569638
    Abstract: A motor pump is described wherein an air cooled, oil-lubricated motor has its rotor axially displaced from its stator and in which the bearing support for the motor shaft is entirely on one side of the rotor. The drive shaft is coupled to the impeller in the pump unit by means of a flexible coupler which serves to reduce vibration levels which are transmitted through the piping system.
    Type: Grant
    Filed: November 30, 1982
    Date of Patent: February 11, 1986
    Assignee: International Telephone and Telegraph Corporation
    Inventors: John H. Harker, Thomas E. Boesen
  • Patent number: 4569366
    Abstract: A rising stem valve includes a scale plate attached to the stem and rising with the stem. A stationary reference mark on the valve bonnet indicates the degree of opening of the valve on the scale plate. The scale plate is rotatable around the valve stem to permit viewing from any position.
    Type: Grant
    Filed: June 21, 1982
    Date of Patent: February 11, 1986
    Assignee: International Telephone and Telegraph Corporation
    Inventors: Michael D. West, Andrew W. Channell
  • Patent number: 4568968
    Abstract: The circuit contains three multipliers/adders for the luminance signal (y) and the two color-difference signals (r-y, b-y). For the output signals of these stages, four parallel adders are provided. The multipliers for the factors -0.51 and -0.19, which would be required in accordance with the color-television-system formula y=0.3r+0.59g+0.11b are rendered unnecessary because, among other things, the input signals are provided with correction factors (k, L, m) and correction addends (d, e, f) in the multipliers/adders in view of a presettable color overload.
    Type: Grant
    Filed: July 1, 1985
    Date of Patent: February 4, 1986
    Assignee: ITT Industries, Inc.
    Inventor: Manfred F. Ullrich
  • Patent number: 4569031
    Abstract: Such digital filters process digital input data occurring during short pulses of a filter sampling signal (fa) in the pure binary code and in two's complement notation. They contain a parallel-to-serial converter (pw) at the input end, at least one adder (ad), at least one shift register used as a status register (z), at least one multiplier circuit (m1) to which an input-data-dependent signal and a factor which is constant at least during the multiplication are applied as a multiplier and a multiplicand, respectively, and a serial-to-parallel converter (sw) at the output end. The status register (z) has, in addition to a number of stages determined by the number of digits of the input data, a number of stages equal to the number of digits of the multiplicand. The parallel-to-serial converter (pw) is followed by a digit complementer (se) which increases the number of digits of the output signal of the parallel-to-serial converter (pw) to that of the status register (z).
    Type: Grant
    Filed: March 21, 1983
    Date of Patent: February 4, 1986
    Assignee: ITT Industries, Inc.
    Inventor: Reiner Backes
  • Patent number: 4568967
    Abstract: Digital color signal processing circuitry includes a multiplier which multiplies two demodulated digital color-difference signals by a digital color-saturation signal to provide three time-division-multiplexed signal pairs, each of which is added to the digital luminance signal by an adder. The color-saturation-signal input of the multiplier is preceded by a second multiplier to which the color-saturation signal and multiplier factors stored in a memory (sp) are applied. These multiplier factors are permanently stored by the manufacture of the color-television receiver or can be varied or adjusted during the operation of the receiver. The three adders are followed by three digital-to-analog converters which provide the analog color signals.
    Type: Grant
    Filed: November 17, 1983
    Date of Patent: February 4, 1986
    Assignee: ITT Industries, Inc.
    Inventors: Laurin C. Freyberger, Friedrich Schmidtpott
  • Patent number: 4565038
    Abstract: A guy yoke for use in a guyed structure terminate two support guys coupled to said structure and to transfer loads entered on said supported guys to anchor means, said guy yokes includes two arms pivotally coupled to an anchor plate at one end and coupled to guy wires at the other end. A spreader arm is coupled to the arms to maintain them in a fixed position for forces transmitted by the guy lines which are below a predetermined level. The spreader arm is coupled to the two arms by shear bolts or pins. When the forces transmitted to the yoke are at or exceed the predetermined level, one or both of the shear bolts or pins is severed permitting the two arms to swing toward each other and thereby add effective length to the guying.
    Type: Grant
    Filed: March 3, 1983
    Date of Patent: January 21, 1986
    Assignee: International Telephone and Telegraph Corporation
    Inventors: Arnold M. Milbright, Peter A. Hampe
  • Patent number: 4561115
    Abstract: A circuit for decoding broadcast traffic area signals according to the European standards utilizes digital circuitry to check for four criteria.
    Type: Grant
    Filed: March 8, 1984
    Date of Patent: December 24, 1985
    Assignee: ITT Industries, Inc.
    Inventor: Heinrich Pfeifer
  • Patent number: 4560955
    Abstract: To increase the gain and, consequently, to increase the voltage amplitude appearing at the crystal of a crystal oscillator a conventional circuit including a first differential amplifier in the amplifier section and two further differential amplifiers in the phase shifting section is modified to include a fourth differential amplifier in the amplifier section. The fourth amplifier carries an additional current to flow in the two differential amplifiers causing an additional current to flow and across the operating resistance of the two differential amplifiers an additional voltage drop being fed to the crystal via an emitter follower.
    Type: Grant
    Filed: July 27, 1984
    Date of Patent: December 24, 1985
    Assignee: ITT Industries, Inc.
    Inventor: Wolfgang Sauer
  • Patent number: 4559663
    Abstract: A low overall height is provided in a wiper-arm assembly with a wiper arm which has a fastening part, a link part which is swivelably linked to the fastening part and two side walls and a back connecting the two side walls, and a contact pressure spring which is accommodated in the link part and acts on the link part and the fastening part, and also with a wiper blade linked to the wiper arm, which blade lies at least partly in line with the link part. The low height is achieved by making the clearance between the contact pressure spring and the one side wall of the link part greater than the width of the wiper blade in the area of the link part and by the wiper blade being swivelable into the link part alongside the contact pressure spring.
    Type: Grant
    Filed: August 31, 1984
    Date of Patent: December 24, 1985
    Assignees: SWF Auto-Electric GmbH, Daimler-Benz
    Inventors: Kurt Bauer, Reinhard Edele, Anton Epple, Hans Trube, Martin Pfeiffer, Josef Berger
  • Patent number: 4560140
    Abstract: A zone valve is described in which the frame for the operator unit is assembled without separate fasteners. Tongue and groove on the frame pieces fit together in an interlocking manner to provide a rigid frame construction. The assembly of the frame, hinges the parts against each other so that they snap together and are rigidly retained together by the inherent spring force of the members.
    Type: Grant
    Filed: January 17, 1983
    Date of Patent: December 24, 1985
    Assignee: International Telephone and Telegraph Corporation
    Inventor: Michael D. West
  • Patent number: 4553733
    Abstract: In a zone valve, an improved arrangement for connecting the operator unit to the valve unit is provided. A one piece wire locking spring carried by the operator unit in conjunction with a groove on the valve unit valve plug provides a snap connection.
    Type: Grant
    Filed: January 17, 1983
    Date of Patent: November 19, 1985
    Assignee: International Telephone and Telegraph Corporation
    Inventor: Michael D. West
  • Patent number: 4553163
    Abstract: This integrated circuit contains the horizontal sweep generator (HO), the amplitude filter (AS), the sync-signal separating circuit (SA) and the frequency/phase comparator (FP). For the purpose of suppressing noise pulses which are caused via the operating voltage during the upper and the lower inversion point of the horizontal sweep generator (HO) which contains a single capacitor (C) and a first threshold stage circuit (SS1) with two fixed thresholds, there are provided a second and a third threshold stage circuit (SS2, SS3), to the inputs of which the sawtooth signal is applied, and with the thresholds thereof, approximately 2 .mu.s prior to reaching the upper or the lower peak value of the sawtooth signal, are being passed through thereby.
    Type: Grant
    Filed: February 27, 1985
    Date of Patent: November 12, 1985
    Assignee: ITT Industries, Inc.
    Inventor: Wolfgang Sauer
  • Patent number: 4550469
    Abstract: A windshield wiper assembly including a one-piece plastic shaft and crank coupling the drive unit to the driven assembly.
    Type: Grant
    Filed: November 6, 1981
    Date of Patent: November 5, 1985
    Assignee: ITT Industries, Inc.
    Inventors: Hans-Christian Deutscher, Alfred Kohler, Hans Prohaska, Karl-Friedrich Schubert