Patents by Inventor Aiwu Hu

Aiwu Hu 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).

  • Cold-launch device and method using the same
    Patent number: 8950704
    Abstract: A cold-launch device, including a high-energy gas resource, a gas cylinder, a control valve, a gas-liquid mixing cylinder having a cylinder body, the high-energy gas resource is connected to the gas cylinder whereby supplying energy thereto, and the gas cylinder is connected to an terminal of the gas-liquid mixing cylinder via the control valve and a connecting pipe.
    Type: Grant
    Filed: February 28, 2011
    Date of Patent: February 10, 2015
    Inventors: Xuanzhe Hu, Zhenhua Hu, Aiwu Hu
  • COLD-LAUNCH DEVICE AND METHOD USING THE SAME
    Publication number: 20110147516
    Abstract: A cold-launch device, including a high-energy gas resource, a gas cylinder, a control valve, a gas-liquid mixing cylinder having a cylinder body, the high-energy gas resource is connected to the gas cylinder whereby supplying energy thereto, and the gas cylinder is connected to an terminal of the gas-liquid mixing cylinder via the control valve and a connecting pipe.
    Type: Application
    Filed: February 28, 2011
    Publication date: June 23, 2011
    Inventors: Xuanzhe HU, Zhenhua HU, Aiwu HU
  • Hydraulic jack and a hydraulic circuit for such a hydraulic jack
    Patent number: 6546725
    Abstract: A continuously auto lifting and lowering hydraulic jack comprises a base, an oil pump, working oil cylinder, a piston, an oil box, an accumulator, a two-position and two-way valve, a dual-controlling check, a pressure-set check and other checks. The two-position and two-way valve, the dual-controlling check and the pressure-set check are arranged in a straight line; a valve bore is formed in the base to serve as a common valve bore for the two-position and two-way valve, the dual-controlling check and the pressure-set check. Valve members of the two-position and two-way valve, the dual-controlling check and the pressure-set check are disposed sequentially in the valve bore in series; a tappet is positioned between the two-position and two-way valve and the dual-controlling check; and another tappet is positioned between the dual-controlling check and the pressure-set check. Also disclosed is a hydraulic circuit for the hydraulic jack.
    Type: Grant
    Filed: December 19, 2000
    Date of Patent: April 15, 2003
    Inventors: Xuanzhe Hu, Aiwu Hu, Zhenhua Hu
  • Hydraulic jack and a hydraulic circuit for such a hydraulic jack
    Publication number: 20020074538
    Abstract: A continuously auto lifting and lowering hydraulic jack comprises a base, an oil pump, working oil cylinder, a piston, an oil box, an accumulator, a two-position and two-way valve, a dual-controlling check, a pressure-set check and other checks. The two-position and two-way valve, the dual-controlling check and the pressure-set check are arranged in a straight line; a valve bore is formed in the base to serve as a common valve bore for the two-position and two-way valve, the dual-controlling check and the pressure-set check. Valve members of the two-position and two-way valve, the dual-controlling check and the pressure-set check are disposed sequentially in the valve bore in series; a tappet is positioned between the two-position and two-way valve and the dual-controlling check; and another tappet is positioned between the dual-controlling check and the pressure-set check. Also disclosed is a hydraulic circuit for the hydraulic jack.
    Type: Application
    Filed: December 19, 2000
    Publication date: June 20, 2002
    Inventors: Xuanzhe Hu, Aiwu Hu, Zhenhua Hu