Patents by Inventor Grant Parratt

Grant Parratt 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).

  • Apparatus for delivery of pressurised gas
    Patent number: 8985105
    Abstract: The present invention provides a gas delivery device and system and methods for delivering humidified pressurized gas through a conduit to a subject. The configuration of the elements of the gas delivery device enable the device to be conveniently oriented from a horizontal to vertical position to suit the needs of a user. The gas delivery device may incorporate a Helmholtz resonator for dampening sound of the motor. The conduit may incorporate concentric tubes to allow it to conveniently engage the humidifier at a single aperture. The invention includes a method of operating a blower motor for a gas delivery device using a single Hall sensor.
    Type: Grant
    Filed: October 16, 2006
    Date of Patent: March 24, 2015
    Assignee: Compumedics Medical Innovation Pty Ltd
    Inventors: David Burton, Fred Blochlinger, Warwick Freeman, Grant Parratt, Allan Wallace
  • APPARATUS FOR DELIVERY OF PRESSURISED GAS
    Publication number: 20090301482
    Abstract: The present invention provides a gas delivery device and system and methods for delivering humidified pressurised gas through a conduit to a subject. The configuration of the elements of the gas delivery device enable the device to be conveniently oriented from a horizontal to vertical position to suit the needs of a user. The gas delivery device may incorporate a Helmholtz resonator for dampening sound of the motor. The conduit may incorporate concentric tubes to allow it to conveniently engage the humidifier at a single aperture. The invention includes a method of operating a blower motor for a gas delivery device using a single Hall sensor.
    Type: Application
    Filed: October 16, 2006
    Publication date: December 10, 2009
    Applicant: COMPUMEDICS LIMITED
    Inventors: David Burton, Fred Blochlinger, Warwick Freeman, Grant Parratt, Allan Wallace