Patents by Inventor Edmund Leung

Edmund Leung 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).

  • Patent number: 11203948
    Abstract: The contact seal assembly for a shaft of a gas turbine engine includes a carbon seal mounted in a fixed position within a seal housing, and an annular seal runner adapted to be connected to the shaft of the gas turbine engine and rotatable relative to the carbon ring segments. The seal runner is disposed adjacent to and radially inwardly from the carbon ring segments to form a contact interface between the seal runner and the carbon ring segments which forms a substantially fluid tight seal. The seal runner includes a coolant scoop disposed in a cavity defined by the seal housing, a first slinger disposed between the coolant scoop and the contact interface, a second slinger disposed between the first slinger and the contact interface, and a coolant collector groove disposed between the first slinger and the second slinger.
    Type: Grant
    Filed: September 6, 2019
    Date of Patent: December 21, 2021
    Assignee: PRATT & WHITNEY CANADA CORP.
    Inventors: Michel Labbe, Steve Fett, Ho-Wing Edmund Leung
  • Publication number: 20210071540
    Abstract: The contact seal assembly for a shaft of a gas turbine engine includes a carbon seal mounted in a fixed position within a seal housing, and an annular seal runner adapted to be connected to the shaft of the gas turbine engine and rotatable relative to the carbon ring segments. The seal runner is disposed adjacent to and radially inwardly from the carbon ring segments to form a contact interface between the seal runner and the carbon ring segments which forms a substantially fluid tight seal. The seal runner includes a coolant scoop disposed in a cavity defined by the seal housing, a first slinger disposed between the coolant scoop and the contact interface, a second slinger disposed between the first slinger and the contact interface, and a coolant collector groove disposed between the first slinger and the second slinger.
    Type: Application
    Filed: September 6, 2019
    Publication date: March 11, 2021
    Inventors: Michel LABBE, Steve FETT, Ho-Wing Edmund LEUNG
  • Publication number: 20190080289
    Abstract: A graphical project management tool that takes a representational image as input and enables a user to define one or more “regions” of the image as a “hotspot”. Tasks that are tracked by one or more project issue management tools can then be associated with the hotspot. The user can originate new tasks from within the tool, or may view a list of unassigned/unassociated tasks imported from the project management tool. The system also ensures that data internal to the graphical tool is kept in sync with data maintained by the management tool.
    Type: Application
    Filed: August 29, 2018
    Publication date: March 14, 2019
    Applicant: Gliffy, Inc.
    Inventors: Jeremy Kreitler, Edmund Leung, Brian Ford, Kenny Lopez, Jun Loyza, Zac Prosperi
  • Patent number: 6695363
    Abstract: The present invention provides a method and system for a secondary lock for securing accessories in a radiation therapy system. The latching mechanism provided in accordance with the present invention includes a primary lock, a secondary lock, and a retainer shaft. The primary lock includes a head at a first end of the primary lock, and a protrusion at a first side of the primary lock. The secondary lock includes a main body, an engagement tang at a first end and a first side of the main body, and a locking tang at the first end and a second side of the main body. The retainer shaft is coupled to the primary lock and the main body of the secondary lock, where the secondary lock is fixedly positioned when the protrusion engages the accessory and the head resides between the engagement tang and the locking tang.
    Type: Grant
    Filed: January 21, 2000
    Date of Patent: February 24, 2004
    Assignee: Siemens Medical Solutions USA, Inc.
    Inventor: Edmund Leung Ma