Patents by Inventor Kimberley Ann MacDonald

Kimberley Ann MacDonald 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).

  • Damping mechanism for valves
    Patent number: 11118698
    Abstract: A valve has a housing having an inlet and an outlet. A valve element is biased towards a closed position in which the valve element restricts fluid flow from the inlet to the outlet. The valve element is axially movable by fluid pressure at the inlet towards an open position in which the inlet is in fluid flow communication with the outlet. The valve further has a damping chamber having a metering orifice in fluid communication with the inlet. The damping chamber has an axially facing surface defined by the valve element and having a variable volume varying from a minimum volume when the valve element is in its closed position to a maximum volume when the valve element is in its open position.
    Type: Grant
    Filed: July 23, 2018
    Date of Patent: September 14, 2021
    Assignee: PRATT & WHIINEY CANADA CORP.
    Inventors: Daniel Alecu, Roberto Brito, Kimberley Ann Macdonald, Patrick Beauchamp
  • DAMPING MECHANISM FOR VALVES
    Publication number: 20200025301
    Abstract: A valve has a housing having an inlet and an outlet. A valve element is biased towards a closed position in which the valve element restricts fluid flow from the inlet to the outlet. The valve element is axially movable by fluid pressure at the inlet towards an open position in which the inlet is in fluid flow communication with the outlet. The valve further has a damping chamber having a metering orifice in fluid communication with the inlet. The damping chamber has an axially facing surface defined by the valve element and having a variable volume varying from a minimum volume when the valve element is in its closed position to a maximum volume when the valve element is in its open position.
    Type: Application
    Filed: July 23, 2018
    Publication date: January 23, 2020
    Inventors: DANIEL ALECU, Roberto BRITO, Kimberley Ann MACDONALD, Patrick BEAUCHAMP
  • Fan blade curvature distribution for high core pressure ratio fan
    Patent number: 7204676
    Abstract: A method for reducing vortex promotion of a rotor blade used in high core PR fans comprises shifting a curvature distribution of a blade section immediately adjacent to the hub such that a major turning of the suction side of the section is located near a trailing edge of the blade.
    Type: Grant
    Filed: May 14, 2004
    Date of Patent: April 17, 2007
    Assignee: Pratt & Whitney Canada Corp.
    Inventors: Ronald James Dutton, Kimberley Ann MacDonald