Patents by Inventor Chung-Yin Lu

Chung-Yin Lu 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).

  • Safety plug
    Patent number: 5249986
    Abstract: A safety plug is disclosed having two fuse tubes inserted in a fuse tube chamber on an internal block and squeezed by a projecting rod on a cap to electrically connect the two blades to the terminals of the hot and neutral wires. The fuse tubes automatically moves toward each other in disconnecting the blades from the terminals of the hot and neutral wires, by means of the guide of a concave bottom surface on the fuse tube chamber, as the cap was opened.
    Type: Grant
    Filed: February 9, 1993
    Date of Patent: October 5, 1993
    Inventor: Chung-Yin Lu