Patents by Inventor Yu-Nan Hung

Yu-Nan Hung 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).

  • Drive gear shaft structure of a self-moving type mower
    Patent number: 6679036
    Abstract: A drive gear shaft structure of a self-moving type mower is provided adjacent to a wheel unit disposed at the bottom portion of a mower, and includes upper and lower housings which co-define a receiving space after assembly thereof; a shaft, a gear, two transmission taper blocks, two securing plates, two securing oil seals, a worm and a trigger rod disposed in the receiving space; and a transmission structure connected to the worm and a transmission spindle of a drive motor of the mower. The structure utilizes motor output power of the cutter of the mower to enable the wheels of the mower to automatically rotate.
    Type: Grant
    Filed: October 15, 2001
    Date of Patent: January 20, 2004
    Assignee: Shunchi Crankshaft Co., Ltd.
    Inventor: Yu-Nan Hung
  • Drive gear shaft structure of a self-moving type
    Publication number: 20030070500
    Abstract: A drive gear shaft structure of a self-moving type mower is provided adjacent to a wheel unit disposed at the bottom portion of a mower, and includes upper and lower housings which co-define a receiving space after assembly thereof; a shaft, a gear, two transmission taper blocks, two securing plates, two securing oil seals, a worm and a trigger rod disposed in the receiving space; and a transmission structure connected to the worm and a transmission spindle of a drive motor of the mower. The structure utilizes motor output power of the cutter of the mower to enable the wheels of the mower to automatically rotate.
    Type: Application
    Filed: October 15, 2001
    Publication date: April 17, 2003
    Inventor: Yu-Nan Hung