Patents by Inventor Carl E. Tom

Carl E. Tom 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).

  • Publication number: 20100317222
    Abstract: An electrical power extension cord having a male plug end, a female receptacle end, and an insulated flexible cordset extending between the male and female ends of the extension cord. The male end has a first prong electrically connected to a hot wire contained in the cordset, a second prong electrically connected to a neutral wire in the cordset, and a third prong electrically connected to a ground wire in the cordset. The female end has a first receptacle electrically connected to a hot wire contained in the cordset, a second receptacle electrically connected to the neutral wire in the cordset, and a third receptacle electrically connected to the ground wire in the cordset. Continuous electrical current and ground monitoring circuits are contained in the male and female ends of the extension cord.
    Type: Application
    Filed: June 10, 2009
    Publication date: December 16, 2010
    Inventors: CARL E. TOM, Victor Chan
  • Patent number: D594417
    Type: Grant
    Filed: February 6, 2008
    Date of Patent: June 16, 2009
    Assignee: Gehr Industries, Inc.
    Inventors: Galen Ho'o, Carl E. Tom, Kane Dong