Patents by Inventor Karl C. Koch

Karl C. Koch has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 5015949
    Abstract: An apparatus for detecting turbine blade passing times includes a sensor for producing an input signal each time a blade passes the sensor. Automatic gain control circuitry including a digital multiplier, peak detector and error amplifier regulates the amplitude of the input signal. A zero-crossing detector produces an output signal each time the input signal crosses a reference axis. A pre-trigger comparator produces a gating signal coinciding with the expected arrival time of the blade at the sensor. A gating device is responsive to the gating signal for conducting output signals which occur during the expected arrival time of the blade at the sensor. A monostable vibrator produces a digital pulse coinciding with the time at which the blade passes the sensor.
    Type: Grant
    Filed: December 22, 1988
    Date of Patent: May 14, 1991
    Assignee: Westinghouse Electric Corp.
    Inventors: Karl C. Koch, Robert M. Oates, Carlo F. Peteronio, Charles W. Einolf, Jr.
  • Patent number: 4922757
    Abstract: An apparatus for detecting blade passing times includes a sensor for producing an input signal each time a blade passes the sensor. A zero crossing detector produces an output signal each time the input signal crosses a reference axis. A phase shifter shifts the phase of the input signal to produce a gating signal coinciding with the expected arrival time of the blade at the sensor. A gating device is responsive to the gating signal for conducting output signals which occur during the expected arrival time of the blade at the sensor.
    Type: Grant
    Filed: June 13, 1988
    Date of Patent: May 8, 1990
    Assignee: Westinghouse Electric Corp.
    Inventors: Paul F. Rozelle, Karl C. Koch, Charles W. Einolf, Jr., Robert M. Oates
  • Patent number: 4899383
    Abstract: The multiplexer in a multichannel, secure digital communication system repetitively embeds a sequence of byte length uniquely coded synchronizing signals in each of n successive frames of one channel of a multichannel, time multiplexed digital bit stream. Redundant protective relay data and associated parity check data are embedded in four of the n frames in a second, preferably adjacent channel, with the remaining of the n frames in the second channel containing additional of the uniquely coded synchronizing signals. The time multiplexed serial bit stream is transmitted to a remote station, preferably by fiber optic communications media. The most recent bits of the received serial bit stream equal in number to the number of bits spanned by the two channels in n frames are retained in n-1 serially connected serial in, serial out shift registers. Sixteen bit portions, a frame apart, of the retained most recent bits of the serial bit stream are applied to n serial in, parallel out shift registers.
    Type: Grant
    Filed: September 8, 1987
    Date of Patent: February 6, 1990
    Assignee: Westinghouse Electric Corp.
    Inventors: Charles W. Einolf, Jr., Harold B. Shutterly, Shan C. Sun, Russel W. Gonnam, Roger E. Ray, Karl C. Koch, Pamela M. Maynard-Nenno
  • Patent number: 4679111
    Abstract: A circuit arrangement for monitoring ground faults to a normally ungrounded coil of a motor, the circuit arrangement including;a source of a low-level d.c. voltage, the source having first and second output terminals between which the d.c. voltage is established and a conductive connection being established between the first output terminal and the motor coil;a current responsive unit connected between a point at ground potential relative to the motor coil and the second output terminal of the source for producing an output signal proportional to the amplitude of current flow between the second terminal and ground; anda motor control unit connected for preventing operation of the motor when the output signal from the current responsive means reaches a selected value.
    Type: Grant
    Filed: November 12, 1985
    Date of Patent: July 7, 1987
    Assignee: Westinghouse Electric Corp.
    Inventors: Karl C. Koch, Charles W. Einolf, Jr.