Patents by Inventor Cheng Hsing Wang

Cheng Hsing Wang 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).

  • Welding gun of plastics
    Patent number: 8443860
    Abstract: A welding gun of plastics includes a main body, a power cord, a power controller, a transformer and two welding tubes. Each welding tube has one end fixed in the main body and another end formed with a plugging hole extended outward the main body for a pin of a welding wire to plug in. The welding wire can be electrified to create thermal energy that is able to instantly melt the interface of two pieces of plastics, enabling the welding wire to be embedded in plastics so as to reinforce fusing strength.
    Type: Grant
    Filed: January 6, 2012
    Date of Patent: May 21, 2013
    Assignee: Shih Li Machine & Hardware Co., Ltd.
    Inventor: Cheng-Hsing Wang
  • Industrial fan
    Patent number: D503789
    Type: Grant
    Filed: August 14, 2003
    Date of Patent: April 5, 2005
    Assignee: Shih Li Machine & Hardware Co., Ltd.
    Inventor: Cheng Hsing Wang