Patents by Inventor Hoa Dao Pham

Hoa Dao Pham 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).

  • Two-stage hydrodynamic pump and method
    Patent number: 7758320
    Abstract: A two-stage pump having an internal fluid pathway or cycle for providing cooling to various parts in the pump, such as, an electric motor in the pump, and also for lubricating at least one or a plurality of bearings in the pump. The pump utilized hydrodynamic bearings that are adapted or configured to provide various passageways, channels and the like for using the fluid that is being pumped by the pump as lubrication for at least one or a plurality of bearings in the pump.
    Type: Grant
    Filed: May 3, 2007
    Date of Patent: July 20, 2010
    Assignee: Tank, Inc.
    Inventors: Hoa Dao Pham, Joseph Howard McCarthy, Jay Timothy Clementz, Philip Stahl
  • TWO-STAGE HYDRODYNAMIC PUMP AND METHOD
    Publication number: 20080273990
    Abstract: A two-stage pump having an internal fluid pathway or cycle for providing cooling to various parts in the pump, such as, an electric motor in the pump, and also for lubricating at least one or a plurality of bearings in the pump. The pump utilized hydrodynamic bearings that are adapted or configured to provide various passageways, channels and the like for using the fluid that is being pumped by the pump as lubrication for at least one or a plurality of bearings in the pump.
    Type: Application
    Filed: May 3, 2007
    Publication date: November 6, 2008
    Applicant: TARK, INC.
    Inventors: Hoa Dao Pham, Joseph Howard McCarthy, Jay Timothy Clementz, Philip Stahl
  • Cooling system comprising a circular venturi
    Patent number: 6698924
    Abstract: A system and method for improving cooling of a heat-generating component in a closed-loop cooling system is shown. The system comprises a venturi having a throat which is coupled to an expansion tank that is exposed to atmospheric pressure in the embodiment being described. The venturi, when used with a pressure switch, can operate to determine a flow rate which can be used to generate a signal which in turn is used to activate or deactivate one or more of the components, such as the heat-generating component, in the system. Also shown is another embodiment wherein a circular venturi is provided to permit a venturi passageway to be defined about an axis of the pump in order to shorten the overall length of the pump and venturi combination.
    Type: Grant
    Filed: January 12, 2002
    Date of Patent: March 2, 2004
    Assignee: Tank, Inc.
    Inventors: Joseph H. McCarthy, Jr., Hoa Dao Pham
  • Method and system for cooling heat-generating component in a closed-loop system
    Publication number: 20020121105
    Abstract: A system and method for improving cooling of a heat-generating component in a closed-loop cooling system is shown. The system comprises a venturi having a throat which is coupled to an expansion tank that is exposed to atmospheric pressure in the embodiment being described. The venturi, when used with a pressure switch, can operate to determine a flow rate which can be used to generate a signal which in turn is used to activate or deactivate one or more of the components, such as the heat-generating component, in the system. Also shown is another embodiment wherein a circular venturi is provided to permit a venturi passageway to be defined about an axis of the pump in order to shorten the overall length of the pump and venturi combination.
    Type: Application
    Filed: January 12, 2002
    Publication date: September 5, 2002
    Inventors: Joseph H. McCarthy, Hoa Dao Pham