Patents by Inventor David Liou

David Liou 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: 10041465
    Abstract: A water turbine device is disclosed. The water turbine device includes a water shaft, a plurality of blade frames, a plurality of turbine blades, a pivot shaft and a blade control mechanism. The water shaft has a first axis. The plurality of blade frames are radially distributed around the water shaft. The plurality of turbine blades are mounted on the plurality of blade frames respectively. The pivot shaft is disposed on a corresponding one of the plurality of blade frames, has a second axis, and allows one of the plurality of turbine blades corresponding to the corresponding blade frame to be pivotally mounted on the corresponding blade frame. The blade control mechanism is disposed on an end opposite to the pivot shaft on the corresponding blade frame, wherein the turbine blade mounted on the corresponding blade frame has a stopper adjacent to the blade control mechanism.
    Type: Grant
    Filed: August 2, 2013
    Date of Patent: August 7, 2018
    Inventor: David Liou
  • Publication number: 20160195059
    Abstract: A water turbine device is disclosed. The water turbine device includes a water shaft, a plurality of blade frames, a plurality of turbine blades, a pivot shaft and a blade control mechanism. The water shaft has a first axis. The plurality of blade frames are radially distributed around the water shaft. The plurality of turbine blades are mounted on the plurality of blade frames respectively. The pivot shaft is disposed on a corresponding one of the plurality of blade frames, has a second axis, and allows one of the plurality of turbine blades corresponding to the corresponding blade frame to be pivotally mounted on the corresponding blade frame. The blade control mechanism is disposed on an end opposite to the pivot shaft on the corresponding blade frame, wherein the turbine blade mounted on the corresponding blade frame has a stopper adjacent to the blade control mechanism.
    Type: Application
    Filed: August 2, 2013
    Publication date: July 7, 2016
    Inventor: David LIOU
  • Patent number: 8011875
    Abstract: A controllable transmission system and a method thereof are provided. The controllable transmission system includes a first rotation device, a coupling device and a control device. The first rotation device includes a transmission shaft, a rotation body and a plurality of blade units connected with the rotation body, wherein each of the blade units includes an adjustable blade having a first and a second contact elements and having an opening corresponding to the adjustable blade. The coupling device is mounted beside the rotation device and includes a coupling unit having a first and a second contact surfaces. The control device is connected with the coupling device for controlling a movement of the coupling device to cause one of the contact surfaces positioned corresponding to a respective one of the first contact element and the second contact element.
    Type: Grant
    Filed: August 20, 2007
    Date of Patent: September 6, 2011
    Assignee: Cheng-Tsun Liu
    Inventor: David Liou
  • Publication number: 20080050219
    Abstract: A controllable transmission system and a method thereof are provided. The controllable transmission system includes a first rotation device, a coupling device and a control device. The first rotation device includes a transmission shaft, a rotation body and a plurality of blade units connected with the rotation body, wherein each of the blade units includes an adjustable blade having a first and a second contact elements and having an opening corresponding to the adjustable blade. The coupling device is mounted beside the rotation device and includes a coupling unit having a first and a second contact surfaces. The control device is connected with the coupling device for controlling a movement of the coupling device to cause one of the contact surfaces positioned corresponding to a respective one of the first contact element and the second contact element.
    Type: Application
    Filed: August 20, 2007
    Publication date: February 28, 2008
    Inventor: David Liou
  • Patent number: 5905312
    Abstract: The present invention provides a system generating electricity by gravity. This system includes a plurality of tanks mounted on a circulating device. When the tanks receive the working medium descending from a higher place by gravity, the circulating device is driven to circulate along a guiding device so as to drive a working shaft of a generator for generating electricity. A transmission mechanism is added between the circulating device and the working shaft to increase the rotational speed of the working shaft.
    Type: Grant
    Filed: May 14, 1997
    Date of Patent: May 18, 1999
    Inventor: David Liou
  • Patent number: 5645139
    Abstract: The present invention relates generally to the safety equipment of a circulatable ladder. The device requires no automatic power and can be operated for heavy loading capacity. The device includes a track set, a circulatable chain mounted along the track set, a securing device secured to a building for securing thereon the track set and a decelerator mounted on the securing device for slowing down the circulating speed of the circulatable chain.
    Type: Grant
    Filed: November 18, 1994
    Date of Patent: July 8, 1997
    Inventor: David Liou
  • Patent number: 5410952
    Abstract: A method for making noodle with stuffing comprising steps of flattening a dough to a plurality of dough sheet, passing the dough sheet between a first roller with smooth surface and a second roller with a plurality of parallel grooves to form a dough sheet with a plurality of parallel grooves, filling the grooves of said dough sheet with stuffing, covering said dough sheet with a second dough sheet to form a sandwiched dough sheet, pressing said sandwiched dough sheet so as to join the second dough sheet firmly with said first dough sheet, and severing said sandwiched dough sheet into a plurality of noodles with stuffing.
    Type: Grant
    Filed: March 10, 1994
    Date of Patent: May 2, 1995
    Inventor: David Liou
  • Patent number: D429875
    Type: Grant
    Filed: August 11, 1998
    Date of Patent: August 29, 2000
    Assignee: Skechers U.S.A., Inc.
    Inventor: David Liou