Patents by Inventor Mark D. Sebald

Mark D. Sebald 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).

  • Voltage follower with pull-apart conector
    Patent number: 4945316
    Abstract: A computer implemented control system which includes interface circuitry by which signal intelligence is taken in to the computer from external devices such as sensors and is fed out from the computer to external devices such as actuators which correctively adjust controlled parameters. An interface circuit for each of the several external devices is made "universal" in that either an analog input, bistate input, analog output, or bistate output device may be connected to any given one of the terminal points. A voltage follower amplifier sends the intelligence signal to an output device through a low-cost diode, with negative feedback taken from the downstream side of the diode. When an input device is elected for a given terminal point, simple program editing assures that the diode will be reverse biased to isolate the amplifier from the input signal path.
    Type: Grant
    Filed: June 16, 1989
    Date of Patent: July 31, 1990
    Assignee: Barber-Colman Company
    Inventors: Mark D. Sebald, Richard E. Neumeyer
  • Versatile interface means for computer-based control systems
    Patent number: 4872213
    Abstract: A computer implemented control system which includes interface circuitry by which signal intelligence is taken in to the computer from external devices such as sensors and is fed out from the computer to external devices such as actuators which correctively adjust controlled parameters. An interface circuit for each of the several external devices is made "universal" in that either an analog input, bistate input, analog output, or bistate output device may be connected to any given one of the terminal points. A voltage follower amplifier sends the intelligence signal to an output device through a low-cost diode, with negative feedback taken from the downstream side of the diode. When an input device is elected for a given terminal point, simple program editing assures that the diode will be reverse biased to isolate the amplifier from the input signal path.
    Type: Grant
    Filed: March 31, 1988
    Date of Patent: October 3, 1989
    Assignee: Barber-Colman Company
    Inventors: Mark D. Sebald, Richard E. Neumeyer