Patents by Inventor Kun-Hung Chi

Kun-Hung Chi 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).

  • Inner-diameter quenching device
    Patent number: 9187796
    Abstract: An inner-diameter quenching device is provided with a workpiece holding assembly for holding a workpiece to be quenched, a spray cylinder, and a heating coil. The workpiece has a central axis. The spray cylinder is disposed at a first side of the workpiece holding assembly and driven by a lifting assembly to move along the central axis into an inner diameter of the workpiece. The heating coil is disposed at a second side of the workpiece holding assembly and located on and movable along the central axis. The heating coil and the spray cylinder are separated and movable in opposite directions along the same center axis, which can further reduce the size of the quenching device, making it suitable for quenching a small inner-diameter workpiece. Besides, the spray apertures are inclined, so that the cooling liquid can be sprayed out more easily to enhance the quenching effect.
    Type: Grant
    Filed: March 6, 2013
    Date of Patent: November 17, 2015
    Assignee: HIWIN TECHNOLOGIES CORP.
    Inventors: Shih-Tien Chang, Kun-Hung Chi
  • Inner-Diameter Quenching Device
    Publication number: 20140251391
    Abstract: An inner-diameter quenching device is provided with a workpiece holding assembly for holding a workpiece to be quenched, a spray cylinder, and a heating coil. The workpiece has a central axis. The spray cylinder is disposed at a first side of the workpiece holding assembly and driven by a lifting assembly to move along the central axis into an inner diameter of the workpiece. The heating coil is disposed at a second side of the workpiece holding assembly and located on and movable along the central axis. The heating coil and the spray cylinder are separated and movable in opposite directions along the same center axis, which can further reduce the size of the quenching device, making it suitable for quenching a small inner-diameter workpiece. Besides, the spray apertures are inclined, so that the cooling liquid can be sprayed out more easily to enhance the quenching effect.
    Type: Application
    Filed: March 6, 2013
    Publication date: September 11, 2014
    Applicant: HIWIN TECHNOLOGIES CORP.
    Inventors: Shih-Tien Chang, Kun-Hung Chi
  • Machine casing
    Patent number: D769341
    Type: Grant
    Filed: August 17, 2015
    Date of Patent: October 18, 2016
    Assignee: Hiwin Technologies Corp.
    Inventors: Chien-Hua Lee, Kun-Hung Chi