Patents by Inventor Hsun-Fa Liu

Hsun-Fa Liu 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: 6113350
    Abstract: A vertical-axle wind power machine comprises a vertical axle, a plurality of jointed radial arms, a plurality of counterbalanced oblique blades at the support points thereof, a friction-rewarding rotary speed multiplying transmission, and an automatic rotary speed regulating means to be performed by either a wind-operated or an alternative digital controlled rotary speed regulating device; the combination of which provides the oblique blades with great sensitivity to the alternation of lee wind and head wind for automatic swinging to the most efficient lee angle at upstanding and overturned positions to sail nearly three quarters and streamline against the head wind resistance for the remaining quarter every circle of rotation, is able to convert the centripetal and centrifugal component forces to the same torque direction of the tangential component force from the same blade by an eccentric-guided angular bracket means and a fork-rooted radial arm, is able to offset the friction loss in the rotary speed mult
    Type: Grant
    Filed: August 31, 1998
    Date of Patent: September 5, 2000
    Assignee: Stokwang Windpower Industrial Inc.
    Inventor: Hsun-Fa Liu
  • Patent number: 4818180
    Abstract: An apparatus relating to a vertical-axle wind turbine comprises fore eccentric compressible and tensible slide-cantilevers, rear eccentric tensible ropes, dual-rocker trapezoid linkages, slightly inclined flap-blades, and counter-lever with equipoises. Accordingly, all blades on the wind turbine can catch favorable wind force at optimum leeway about 260 degrees each rotation; can absorb centrifugal, centripetal and circumferential shocks from gusts and variable wind force and convert the same to the same direction of torque; can adjust their radius against variable wind speed to stabalize the rotary speed; and can release resistance from relative wind sensitively and streamlined within the remaining 100 degrees of the rotation under the control of respective dual-rocker trapezoid linkages and equipoises to drive the apparatus for converting wind force to mechanical power most efficiently for commitment.
    Type: Grant
    Filed: February 29, 1988
    Date of Patent: April 4, 1989
    Inventor: Hsun-Fa Liu