Patents by Inventor Hanson Situ

Hanson Situ 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).

  • Blower impeller with partial tip blockage
    Patent number: 8128369
    Abstract: According to embodiments of the invention, an impeller includes a hub, and a plurality of radial blades for drawing the air inflow axially through the hub and delivering the drawn air radially towards the outside. A ring is attached to one or more tips of the plurality of radial blades to block a portion of the tip toward the inlet side of the impeller. The preferred blockage factor, which is the ratio of a height of the ring to a height of the tip, is approximately in a range between 30% and 40%. By blocking a portion of the tip toward the inlet side of the impeller, the low-momentum flow zone toward the inlet side of impeller is blocked, while the high-momentum flow zone toward the back side of impeller is enhanced. As such, the performance of the impeller is enhanced.
    Type: Grant
    Filed: April 15, 2008
    Date of Patent: March 6, 2012
    Assignee: Minebea Co., Ltd.
    Inventors: Yousef Jarrah, Hanson Situ, Thang Nguyen
  • Blower Impeller with Partial Tip Blockage
    Publication number: 20090257876
    Abstract: According to embodiments of the invention, an impeller includes a hub, and a plurality of radial blades for drawing the air inflow axially through the hub and delivering the drawn air radially towards the outside. A ring is attached to one or more tips of the plurality of radial blades to block a portion of the tip toward the inlet side of the impeller. The preferred blockage factor, which is the ratio of a height of the ring to a height of the tip, is approximately in a range between 30% and 40%. By blocking a portion of the tip toward the inlet side of the impeller, the low-momentum flow zone toward the inlet side of impeller is blocked, while the high-momentum flow zone toward the back side of impeller is enhanced. As such, the performance of the impeller is enhanced.
    Type: Application
    Filed: April 15, 2008
    Publication date: October 15, 2009
    Applicant: Minebea Co., Ltd.
    Inventors: Yousef Jarrah, Hanson Situ, Thang Nguyen
  • Coin-shaped fan blade assembly
    Patent number: D597651
    Type: Grant
    Filed: March 13, 2008
    Date of Patent: August 4, 2009
    Assignee: Minebea Co., Ltd.
    Inventors: Yousef Jarrah, Hanson Situ
  • Wavy fan blade
    Patent number: D626643
    Type: Grant
    Filed: March 13, 2008
    Date of Patent: November 2, 2010
    Assignee: Minebea Co., Ltd.
    Inventors: Hanson Situ, Yousef Jarrah