Patents by Inventor Wen-Chian Su

Wen-Chian Su 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: 5297324
    Abstract: A fully rounded jingle bell making method including steps of (a) preparing a bell blank having four blades spaced by notches around a dome-like body portion; (b) secondarily punching the bell blank to turn the blades from respective horizontal positions to vertical positions; (c) preparing a mold consisted of a rotary lower die, and an upper die having a cross piece projected on the inside; (d) placing the secondarily shape formed bell blank in the lower die to carry a steel ball; (e) punching the upper die against the lower die to deform the four blades of the bell blank, causing the blades to fit over the inside wall of the upper die and to cover around the steel ball; (f) removing the finished, fully rounded jingle bell from the upper die by inserting push rods into guide holes on the upper die.
    Type: Grant
    Filed: July 15, 1993
    Date of Patent: March 29, 1994
    Inventor: Wen-Chian Su