Patents by Inventor Bruce R. Griffith

Bruce R. Griffith 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).

  • Self-testing hazard sensing device
    Patent number: 11756400
    Abstract: Devices, methods, and systems for a self-testing hazard sensing device are described herein. One device includes a sensor, a wire dipped in a material, a controller configured to provide a current to the wire to heat the material and generate aerosol and/or carbon monoxide, and an airflow generator configured to provide the aerosol and/or carbon monoxide to the sensor. The controller configured to determine whether the self-testing hazard sensing device is functioning properly using the aerosol and/or carbon monoxide provided to the sensor.
    Type: Grant
    Filed: January 14, 2022
    Date of Patent: September 12, 2023
    Assignee: Honeywell International Inc.
    Inventors: Bruce R. Griffith, Dale Johnson, Christopher Dearden, Michael Barson, Benjamin Wolf
  • SELF-TESTING HAZARD SENSING DEVICE
    Publication number: 20220139185
    Abstract: Devices, methods, and systems for a self-testing hazard sensing device are described herein. One device includes a sensor, a wire dipped in a material, a controller configured to provide a current to the wire to heat the material and generate aerosol and/or carbon monoxide, and an airflow generator configured to provide the aerosol and/or carbon monoxide to the sensor. The controller configured to determine whether the self-testing hazard sensing device is functioning properly using the aerosol and/or carbon monoxide provided to the sensor.
    Type: Application
    Filed: January 14, 2022
    Publication date: May 5, 2022
    Inventors: Bruce R. Griffith, Dale Johnson, Christopher Dearden, Michael Barson, Benjamin Wolf
  • Self-testing hazard sensing device
    Patent number: 11227473
    Abstract: Devices, methods, and systems for a self-testing hazard sensing device are described herein. One device includes a sensor, a wire dipped in a material, a controller configured to provide a current to the wire to heat the material and generate aerosol and/or carbon monoxide, and an airflow generator configured to provide the aerosol and/or carbon monoxide to the sensor. The controller configured to determine whether the self-testing hazard sensing device is functioning properly using the aerosol and/or carbon monoxide provided to the sensor.
    Type: Grant
    Filed: September 11, 2020
    Date of Patent: January 18, 2022
    Assignee: Honeywell International Inc.
    Inventors: Bruce R. Griffith, Dale Johnson, Christopher Dearden, Michael Barson, Benjamin Wolf
  • Apparatus and method of smoke detection
    Patent number: 7669457
    Abstract: An aspirated smoke detector includes an ambient air flow separation element in combination with a smoke sensing chamber. The flow separation element can be an active or a passive element. Separated ambient, carrying relative small particles can flow into the sensing chamber. Ambient carrying relatively larger particulate matter is excluded from the sensing chamber.
    Type: Grant
    Filed: July 17, 2008
    Date of Patent: March 2, 2010
    Assignee: Honeywell International Inc.
    Inventors: Bruce R. Griffith, Ludger L K Koester, Mark C. Bohanon
  • Apparatus and Method of Smoke Detection
    Publication number: 20090025453
    Abstract: An aspirated smoke detector includes an ambient air flow separation element in combination with a smoke sensing chamber. The flow separation element can be an active or a passive element. Separated ambient, carrying relative small particles can flow into the sensing chamber. Ambient carrying relatively larger particulate matter is excluded from the sensing chamber.
    Type: Application
    Filed: July 17, 2008
    Publication date: January 29, 2009
    Inventors: Bruce R. Griffith, Ludger LK. Koester, Mark C. Bohanon