Patents by Inventor Robert K. Hatch

Robert K. Hatch 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).

  • Acoustic particle alarm including particle sensor
    Patent number: 7463158
    Abstract: The present invention provides an acoustic particle alarm comprising a particle sensor for indicating the concentration of particles exceeding a specified size and specified concentration, for particles entrained in a fluid flow impinging on a front face of the sensor, and a nozzle for directing the fluid flow such that the particles impact the sensor in a direction substantially normal to the front face of the sensor. Each particle impacting the front face of the sensor causes a response in an output of the sensor with amplitude that is monotonic in the momentum of the impinging particle.
    Type: Grant
    Filed: October 19, 2005
    Date of Patent: December 9, 2008
    Assignee: Linear Measurements, Inc.
    Inventors: Robert K. Hatch, William D. Squire, Harper J. Whitehouse
  • Acoustic particle alarm including particle sensor
    Publication number: 20080084321
    Abstract: The present invention provides an acoustic particle alarm comprising a particle sensor for indicating the concentration of particles exceeding a specified size and specified concentration, for particles entrained in a fluid flow impinging on a front face of the sensor, and a nozzle for directing the fluid flow such that the particles impact the sensor in a direction substantially normal to the front face of the sensor. Each particle impacting the front face of the sensor causes a response in an output of the sensor with amplitude that is monotonic in the momentum of the impinging particle.
    Type: Application
    Filed: October 19, 2005
    Publication date: April 10, 2008
    Inventors: Robert K. Hatch, William D. Squire, Harper J. Whitehouse