Patents by Inventor Gi Man Cha

Gi Man Cha 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).

  • EARTH LEAKAGE CIRCUIT BREAKER WITH FUNCTION FOR DETECTING REVERSE LEAKAGE CURRENT
    Publication number: 20100208396
    Abstract: An earth leakage circuit breaker (ELCB) with a function of detecting a leakage current which backflows while cutting off an electric leakage is disclosed. The ELCB includes: a breaker portion for detecting an occurrence of an electric leakage to cut off electrical power; and a leakage current detecting portion electrically connected in parallel with the breaker portion between an input terminal and an output terminal of the breaker portion and detecting a leakage current which backflows from the output terminal after electrical power is cut off by the breaker portion.
    Type: Application
    Filed: January 30, 2008
    Publication date: August 19, 2010
    Inventors: Han Sik Lee, Gi Man Cha