Patents by Inventor Tsung Shien Chiang

Tsung Shien Chiang 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).

  • Ball screw device having ball return pipe
    Patent number: 8893573
    Abstract: A ball screw device includes a screw engaged into a nut member for forming an endless ball guiding passage between the nut member and the screw and for receiving a number of ball bearing members, a ball return pipe includes a U-shaped structure having a central tubular member and two ends for engaging into two orifices of the nut member, and the nut member includes a straight fence formed between the orifice and the screw hole of the nut member for guiding the ball bearing members to move through a ball return pathway of the ball return pipe and the endless ball guiding passage of the nut member and for preventing the teeth of the nut member from being broken by the ball bearing members.
    Type: Grant
    Filed: January 3, 2012
    Date of Patent: November 25, 2014
    Assignee: Hiwin Technologies Corp.
    Inventors: Chang Hsin Kuo, Tsung Shien Chiang
  • Ball screw device having ball return pipe
    Publication number: 20120103121
    Abstract: A ball screw device includes a screw engaged into a nut member for forming an endless ball guiding passage between the nut member and the screw and for receiving a number of ball bearing members, a ball return pipe includes a U-shaped structure having a central tubular member and two ends for engaging into two orifices of the nut member, and the nut member includes a straight fence formed between the orifice and the screw hole of the nut member for guiding the ball bearing members to move through a ball return pathway of the ball return pipe and the endless ball guiding passage of the nut member and for preventing the teeth of the nut member from being broken by the ball bearing members.
    Type: Application
    Filed: January 3, 2012
    Publication date: May 3, 2012
    Inventors: Chang Hsin Kuo, Tsung Shien Chiang
  • Ball screw device having ball return pipe
    Publication number: 20100101349
    Abstract: A ball screw device includes a screw engaged into a nut member for forming an endless ball guiding passage between the nut member and the screw and for receiving a number of ball bearing members, a ball return pipe includes a U-shaped structure having a central tubular member and two ends for engaging into two orifices of the nut member, and the nut member includes a straight fence formed between the orifice and the screw hole of the nut member for guiding the ball bearing members to move through a ball return pathway of the ball return pipe and the endless ball guiding passage of the nut member and for preventing the teeth of the nut member from being broken by the ball bearing members.
    Type: Application
    Filed: November 25, 2008
    Publication date: April 29, 2010
    Inventors: Chang Hsin Kuo, Tsung Shien Chiang