Patents by Inventor Masahiko Tsurumi

Masahiko Tsurumi 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: 7510408
    Abstract: A grounding structure is provided in an electrical connector, which includes contacts, a housing, a shell, and a ground terminal or a ground lug. The shell has a through-hole communicating with a fitting groove, an installing groove, and a connection portion groove, and the through-hole has an inserting groove into which the ground terminal is inserted, a screw portion for holding the ground terminal, a spacing groove for avoiding any interference with the ground lug integrally mounted on the housing, and an engaging portion to engage a locking portion of the housing. Both the ground lug and the ground terminal are constructed to become electrically conductive with the same shell, respectively, so that grounding is effected by either of the ground lug integrally mounted on the housing and the separately provided ground terminal. It is thus possible to select one contact or the separate ground terminal with respect to the same shell for grounding.
    Type: Grant
    Filed: April 13, 2007
    Date of Patent: March 31, 2009
    Assignee: DDK Ltd.
    Inventor: Masahiko Tsurumi
  • Publication number: 20070249192
    Abstract: An earthing structure is for use in an electrical connector including contacts, a housing, a shell, and an earthing terminal or an earthing lug. The shell has a through-hole communicating with a fitting groove, an installing groove, and a connection portion groove, and the through-hole has an inserting groove into which the earthing terminal is inserted, a screw portion for holding the earthing terminal, a spacing groove for avoiding any interference with the earthing lug integrally mounted on the housing, and an engaging portion to engage a locking portion of the housing. Both the earthing lug and the earthing terminal are constructed to be brought into electrically conductive with the same shell, respectively, so that earthing is effected by either of the earthing lug integrally mounted on the housing and the separately provided earthing terminal. It is thus possible to select one contact or the separate earthing terminal with respect to the same shell for earthing.
    Type: Application
    Filed: April 13, 2007
    Publication date: October 25, 2007
    Inventor: Masahiko Tsurumi