Patents by Inventor Haydon C. Thomas

Haydon C. Thomas 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: 4238784
    Abstract: The electronic measuring system includes a novel power supply which converts D.C. from a D.C. source to voltage pulses to drive a transducer. During intervals between transducer power pulses, an automatic drift compensation system stores an indication of system drift for use during a subsequent power pulse period. The system includes stability sensing means which render the system inoperative for measurement purposes when the signal from the measuring transducer is unstable. A plurality of sample measurement signals are taken and stored, and then passed through a programmable low pulse filter to accomplish a measurement. Thus each measurement is the result of a plurality of measurement cycles.
    Type: Grant
    Filed: November 23, 1977
    Date of Patent: December 9, 1980
    Assignee: Colt Industries Operating Corp.
    Inventors: Harry J. Keen, Haydon C. Thomas
  • Patent number: 4081801
    Abstract: The electronic measuring system includes a novel power supply which may receive power from a D.C. or A.C. source but which is particularly adapted to convert D.C. battery power to higher voltage pulses to drive a transducer. During intervals between transducer power pulses, an automatic drift compensation system stores an indication of system drift for use during a subsequent power pulse period. The system includes stability sensing means which render the system inoperative for measurement purposes when the signal from the measuring transducer is unstable. To compensate for a loss of time, the system automatically operates for a short period at a rapid rate subsequent to a period of input signal unstability.A novel indicator system and indicator control unit is employed wherein up-down counters are controlled in the indicator for rounding purposes.
    Type: Grant
    Filed: January 23, 1975
    Date of Patent: March 28, 1978
    Assignee: Colt Industries Operating Corp
    Inventors: Haydon C. Thomas, Harry J. Keen