Patents by Inventor Chun Kwan Yu

Chun Kwan Yu 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: 8118569
    Abstract: A hydraulic power device is provided. The hydraulic power device includes: a first cylinder with a cylindrical chamber, a first fluid inlet, a first fluid outlet, and a weight unit having a first piston. The first piston hermetically fits into the first cylinder and moves upwards and downwards within the first cylinder. When the first piston moves downwards within the first cylinder, the fluid in the cylindrical chamber flows out through the first fluid outlet under the pressure from the first piston, and thereby generates hydraulic power. When the first piston moves upwards within the first cylinder, the fluid flows into the cylindrical chamber through the first fluid inlet, to get prepared for subsequent hydraulic power output. The hydraulic power device in the present invention is designed to lift a weight unit with a small initial power and then generate hydraulic power utilizing the gravity of the weight unit.
    Type: Grant
    Filed: January 22, 2009
    Date of Patent: February 21, 2012
    Inventor: Chun Kwan Yu
  • Publication number: 20100181878
    Abstract: A power output device and a power enhancement member are provided. The power output device includes: a basic power supply member, a driving shaft, an output shaft, a clutch and a power enhancement member. The power enhancement member includes a rotation portion and a plurality of weight elements arranged on the rotation portion. In operation, the rotation portion rotates together with and around the output shaft, the plurality of weight elements in turn rotate together with the rotation portion around the output shaft. Meantime, the plurality of weight elements also make predetermined reciprocating movement relative to the rotation portion, such that the center of gravity of the power enhancement member is always offset from the output shaft towards a constant direction, thereby to promote and stabilize the rotation of the output shaft. The present invention is especially useful in applications that need large power output.
    Type: Application
    Filed: January 22, 2009
    Publication date: July 22, 2010
    Inventor: CHUN KWAN YU
  • Publication number: 20100180588
    Abstract: A hydraulic power device is provided. The hydraulic power device includes: a first cylinder with a cylindrical chamber, a first fluid inlet, a first fluid outlet, and a weight unit having a first piston. The first piston hermetically fits into the first cylinder and moves upwards and downwards within the first cylinder. When the first piston moves downwards within the first cylinder, the fluid in the cylindrical chamber flows out through the first fluid outlet under the pressure from the first piston, and thereby generates hydraulic power. When the first piston moves upwards within the first cylinder, the fluid flows into the cylindrical chamber through the first fluid inlet, to get prepared for subsequent hydraulic power output. The hydraulic power device in the present invention is designed to lift a weight unit with a small initial power and then generate hydraulic power utilizing the gravity of the weight unit.
    Type: Application
    Filed: January 22, 2009
    Publication date: July 22, 2010
    Inventor: CHUN KWAN YU