Patents by Inventor John Blumer

John Blumer 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).

  • Two-wire resistance temperature detector and method of use
    Patent number: 10317292
    Abstract: A two-wire resistance temperature detector (RTD) includes an RTD sensor having a sensor resistance that changes in correspondence with changes in the temperature of the RTD sensor. The two-wire RTD additionally includes a pair of leads electrically coupling the RTD sensor to a control unit having a pulse generator for generating a first current pulse and a second current pulse. The two-wire RTD also includes a switch electrically coupled between the pair of leads and operable in an open state when subjected to the first current pulse and operable in a closed state when subjected to the second current pulse. The open state causes the first current pulse to flow through the pair of leads and the RTD sensor. The closed state causes the second current pulse to flow through the pair of leads. The switch enables the control unit to determine the sensor resistance and corresponding sensor temperature.
    Type: Grant
    Filed: February 24, 2017
    Date of Patent: June 11, 2019
    Assignee: The Boeing Company
    Inventors: Amir Liaghati, Jordan Miller, David Rushing, John Blumer
  • TWO-WIRE RESISTANCE TEMPERATURE DETECTOR AND METHOD OF USE
    Publication number: 20180245991
    Abstract: A two-wire resistance temperature detector (RTD) includes an RTD sensor having a sensor resistance that changes in correspondence with changes in the temperature of the RTD sensor. The two-wire RTD additionally includes a pair of leads electrically coupling the RTD sensor to a control unit having a pulse generator for generating a first current pulse and a second current pulse. The two-wire RTD also includes a switch electrically coupled between the pair of leads and operable in an open state when subjected to the first current pulse and operable in a closed state when subjected to the second current pulse. The open state causes the first current pulse to flow through the pair of leads and the RTD sensor. The closed state causes the second current pulse to flow through the pair of leads. The switch enables the control unit to determine the sensor resistance and corresponding sensor temperature.
    Type: Application
    Filed: February 24, 2017
    Publication date: August 30, 2018
    Inventors: Amir Liaghati, Jordan Miller, David Rushing, John Blumer