Patents by Inventor Patrick Valiquette

Patrick Valiquette 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).

  • Heat exchanger blockage detection to prevent ram air fan surge
    Patent number: 10569887
    Abstract: A system and method onboard an aircraft includes a ram air temperature sensor, a bleed air temperature sensor, a valve, and a controller. The ram air temperature sensor is positioned to sense a ram air temperature of a ram air flow. The bleed air temperature sensor is positioned to sense a bleed air temperature of a bleed air flow, wherein the bleed air flow is cooled by a heat exchanger using the ram air flow. The valve is configured to control the bleed air flow upstream of the heat exchanger. The controller is configured to determine a bleed air threshold based on the ram air temperature, and control the valve to reduce the bleed air flow in response to the bleed air temperature reaching the bleed air threshold.
    Type: Grant
    Filed: March 16, 2018
    Date of Patent: February 25, 2020
    Assignee: Hamilton Sundstrand Corporation
    Inventors: Patrick Valiquette, Erin G. Kline, Christopher McAuliffe, Thomas M. Zywiak, James Joyce, Lauren Kodet
  • HEAT EXCHANGER BLOCKAGE DETECTION TO PREVENT RAM AIR FAN SURGE
    Publication number: 20190285324
    Abstract: A system and method onboard an aircraft includes a ram air temperature sensor, a bleed air temperature sensor, a valve, and a controller. The ram air temperature sensor is positioned to sense a ram air temperature of a ram air flow. The bleed air temperature sensor is positioned to sense a bleed air temperature of a bleed air flow, wherein the bleed air flow is cooled by a heat exchanger using the ram air flow. The valve is configured to control the bleed air flow upstream of the heat exchanger. The controller is configured to determine a bleed air threshold based on the ram air temperature, and control the valve to reduce the bleed air flow in response to the bleed air temperature reaching the bleed air threshold.
    Type: Application
    Filed: March 16, 2018
    Publication date: September 19, 2019
    Inventors: Patrick Valiquette, Erin G. Kline, Christopher McAuliffe, Thomas M. Zywiak, James Joyce, Lauren Kodet