Patents by Inventor Chau-Chang Chou

Chau-Chang Chou 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).

  • Publication number: 20240151619
    Abstract: A reciprocating friction and wear test apparatus includes a frame unit and an abrader unit. The frame unit includes a frame that has a bottom wall formed with an opening and two side walls extending upwardly from the bottom wall. The abrader unit includes an abrader fixture, an abrader, two first sensor members, and two adjustment members. The abrader fixture extends through the opening and is pivotable relative to the bottom wall. The abrader is affixed to the abrader fixture. The two first sensor members are respectively mounted to the side walls. The two adjustment members are respectively connected to the first sensor members, extend respectively through the first sensor members, extend respectively through the side walls, and are movable toward the abrader fixture to tightly abut against the abrader fixture.
    Type: Application
    Filed: February 13, 2023
    Publication date: May 9, 2024
    Inventor: Chau-Chang CHOU
  • Patent number: 11242611
    Abstract: A nozzle device includes a nozzle body and at least one second electrode. The nozzle body extends along a longitudinal axis, and has a top surface, a bottom surface for confronting a first electrode of a workpiece, a recess provided in the bottom surface, and a longitudinal channel extending downwardly from the top surface along the longitudinal axis to be in fluid communication with the recess. The longitudinal channel has an upper section and a lower tapered section which is tapered downwardly to form a lower communication port. The least one second electrode is disposed in the recess for being spaced apart from the first electrode.
    Type: Grant
    Filed: April 23, 2020
    Date of Patent: February 8, 2022
    Assignee: NATIONAL TAIWAN OCEAN UNIVERSITY
    Inventors: Chau-Chang Chou, Xiao-Li Wang
  • Publication number: 20210254234
    Abstract: A nozzle device includes a nozzle body and at least one second electrode. The nozzle body extends along a longitudinal axis, and has a top surface, a bottom surface for confronting a first electrode of a workpiece, a recess provided in the bottom surface, and a longitudinal channel extending downwardly from the top surface along the longitudinal axis to be in fluid communication with the recess. The longitudinal channel has an upper section and a lower tapered section which is tapered downwardly to form a lower communication port. The least one second electrode is disposed in the recess for being spaced apart from the first electrode.
    Type: Application
    Filed: April 23, 2020
    Publication date: August 19, 2021
    Applicant: National Taiwan Ocean University
    Inventors: Chau-Chang CHOU, Xiao-Li WANG
  • Patent number: 9903359
    Abstract: A vale unit includes a valve frame and two valve plates. The valve frame defines a valve opening. The valve plates are formed with protrusions. Each of the valve plates has a connecting end that is formed with a notch. The connecting ends are connected to each other. The protrusions protrude from peripheries of the notches. Each of the protrusions has a contact end. The contact ends cooperatively define a gap therebetween. The valve plates are co-rotatable about an axis between a closed position, in which the valve plates substantially close the valve opening, and an opening position, in which the valve plates open the valve opening. The gap has a width varying in response to co-rotation of the valve plates between the opening position and the closed position.
    Type: Grant
    Filed: March 11, 2015
    Date of Patent: February 27, 2018
    Assignee: National Taiwan Ocean University
    Inventors: Chau-Chang Chou, Te-Chun Wu, Wen-Jin Cherng
  • Publication number: 20160069461
    Abstract: A vale unit includes a valve frame and two valve plates. The valve frame defines a valve opening. The valve plates are formed with protrusions. Each of the valve plates has a connecting end that is formed with a notch. The connecting ends are connected to each other. The protrusions protrude from peripheries of the notches. Each of the protrusions has a contact end. The contact ends cooperatively define a gap therebetween. The valve plates are co-rotatable about an axis between a closed position, in which the valve plates substantially close the valve opening, and an opening position, in which the valve plates open the valve opening. The gap has a width varying in response to co-rotation of the valve plates between the opening position and the closed position.
    Type: Application
    Filed: March 11, 2015
    Publication date: March 10, 2016
    Inventors: Chau-Chang Chou, Te-Chun Wu, Wen-Jin Cherng
  • Patent number: 8470026
    Abstract: A mechanical heart valve apparatus includes a loop-shaped frame defining a valve opening and formed with a pair of transverse slot units and a pair of longitudinal slots; and a pair of valve plates mounted on the loop-shaped frame. Each of the valve plates includes a pair of first studs that are slidably and respectively inserted into the transverse slot units, and a second stud that is slidably inserted into a respective one of the longitudinal slots. The valve plates are pivoted to each other so as to be rotatable relative to each other between a closed position, in which the second studs are disposed adjacent to upper ends of the longitudinal slots, and an opening position, in which the second studs are disposed adjacent to lower ends of the longitudinal slots.
    Type: Grant
    Filed: May 9, 2011
    Date of Patent: June 25, 2013
    Assignee: National Taiwan Ocean University
    Inventors: Chau-Chang Chou, Te-Chun Wu
  • Publication number: 20120282400
    Abstract: A method for making a cemented tungsten carbide-based material includes subjecting a cemented tungsten carbide substrate film to chromization so as to form the cemented tungsten carbide substrate with a chromized layer that contains a tungsten carbide and a chromium carbide and forming a diamond film on the chromized layer.
    Type: Application
    Filed: July 18, 2012
    Publication date: November 8, 2012
    Applicant: National Taiwan Ocean University
    Inventors: Chau-Chang Chou, Jyh-Wei Lee, Yen-Yi Chen, Hsin-Han Lin
  • Publication number: 20120101573
    Abstract: A mechanical heart valve apparatus includes a loop-shaped frame defining a valve opening and formed with a pair of transverse slot units and a pair of longitudinal slots; and a pair of valve plates mounted on the loop-shaped frame. Each of the valve plates includes a pair of first studs that are slidably and respectively inserted into the transverse slot units, and a second stud that is slidably inserted into a respective one of the longitudinal slots. The valve plates are pivoted to each other so as to be rotatable relative to each other between a closed position, in which the second studs are disposed adjacent to upper ends of the longitudinal slots, and an opening position, in which the second studs are disposed adjacent to lower ends of the longitudinal slots.
    Type: Application
    Filed: May 9, 2011
    Publication date: April 26, 2012
    Applicant: NATIONAL TAIWAN OCEAN UNIVERSITY
    Inventors: Chau-Chang Chou, Te-Chun Wu
  • Publication number: 20100104860
    Abstract: A cemented tungsten carbide-based material includes: a cemented tungsten carbide substrate having a chromized layer that contains a tungsten carbide and a chromium carbide; and a diamond film formed on said chromized layer. A method for making the cemented tungsten carbide-based material involves subjecting a cemented tungsten carbide substrate to chromization so as to form the cemented tungsten carbide substrate with a chromized layer that contains a tungsten carbide and a chromium carbide; and forming a diamond film on the chromized layer.
    Type: Application
    Filed: April 27, 2009
    Publication date: April 29, 2010
    Applicant: NATIONAL TAIWAN OCEAN UNIVERSITY
    Inventors: Chau-Chang Chou, Jyh-Wei Lee, Yen-Yi Chen, Hsin-Han Lin
  • Patent number: 6742931
    Abstract: A rolling ball separator structure of a linear drive member includes multiple separators mounted between the multiple rolling balls and each having a body and an outer ring structure. Thus, the body may be deformed elastically, thereby preventing the multiple separators from interfering with the return face of the rolling path during the returning process of the rolling balls, and thereby absorbing the gap variation of the uneven force during the returning process of the rolling balls, and the outer ring structure may maintain the relative position of the rolling balls, so that the rolling balls will not collide directly during the returning process.
    Type: Grant
    Filed: April 29, 2002
    Date of Patent: June 1, 2004
    Assignee: Hiwin Technologies Corp.
    Inventors: Chau-Chang Chou, Binghung Luo, Jen-Chuan Yeh
  • Publication number: 20030190098
    Abstract: A rolling ball separator structure of a linear drive member includes multiple separators mounted between the multiple rolling balls and each having a body and an outer ring structure. Thus, the body may be deformed elastically, thereby preventing the multiple separators from interfering with the return face of the rolling path during the returning process of the rolling balls, and thereby absorbing the gap variation of the uneven force during the returning process of the rolling balls, and the outer ring structure may maintain the relative position of the rolling balls, so that the rolling balls will not collide directly during the returning process.
    Type: Application
    Filed: April 29, 2002
    Publication date: October 9, 2003
    Inventors: Chau-Chang Chou, Binghung Luo, Jen-Chuan Yeh
  • Patent number: 6584868
    Abstract: The present invention is to provide a slide track structure of a linear platform, wherein the center of gravity of the slide track structure of the linear platform may be lowered. In addition, the outer edge of the upper end of the U-shaped guide track is formed with an inclined face or a smooth arc-shaped face, thereby capable of producing better structural stiffness, saving material, and decreasing weight. Thus, the slide track structure of the linear platform of the present invention can increase the structural stiffness, save material, and decrease the entire weight.
    Type: Grant
    Filed: May 21, 2001
    Date of Patent: July 1, 2003
    Assignee: Hiwin Technologies Corp.
    Inventors: Ching-Shan Wu, Chau-Chang Chou
  • Publication number: 20020172437
    Abstract: The present invention is to provide a slide track structure of a linear platform, wherein the center of gravity of the slide track structure of the linear platform may be lowered. In addition, the outer edge of the upper end of the U-shaped guide track is formed with an inclined face or a smooth arc-shaped face, thereby capable of producing better structural stiffness, saving material, and decreasing weight. Thus, the slide track structure of the linear platform of the present invention can increase the structural stiffness, save material, and decrease the entire weight.
    Type: Application
    Filed: May 21, 2001
    Publication date: November 21, 2002
    Inventors: Ching-Shan Wu, Chau-Chang Chou
  • Patent number: D476607
    Type: Grant
    Filed: May 21, 2002
    Date of Patent: July 1, 2003
    Assignee: Logitech Europe S.A.
    Inventors: Peter A. Stern, John Faust, Fred Swan, Vance A. Prather, David McVicar, Ming Yu, Chau-Chang Chou, Manuel Tavano, Matteo Montani, Klaus Fiorino
  • Patent number: D494516
    Type: Grant
    Filed: June 4, 2003
    Date of Patent: August 17, 2004
    Assignee: Logitech Europe S.A.
    Inventors: Fred Swan, John Faust, Christopher Pate, David McVicar, Vance Prather, Manuel Tavano, Paolo Cattaneo, Klaus Fiorino, Andrea Zardoni, Masayuki Hotta, Chau-Chang Chou, Ming Yu