Patents by Inventor Kanbun Nakaba

Kanbun Nakaba 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: 3949180
    Abstract: A jack is provided in which a movable contact is driven away from a fixed contact upon insertion of a plug and returns into abutting relationship with the fixed contact upon withdrawal of the plug. The movable contact comprises an electrically conductive, rigid body which is rotatably mounted at its one end, and is biased toward the fixed contact by means of a coiled spring. When the plug is inserted, the movable contact is displaced against the resilience of the coiled spring to move away from the fixed contact, while when the plug is withdrawn, the resilience of the coiled spring urges the movable contact into abutting relationship with the fixed contact.
    Type: Grant
    Filed: August 16, 1974
    Date of Patent: April 6, 1976
    Assignee: Hoshidenki-Seizo Kabushiki Kaisha
    Inventors: Shin Ojima, Kazuhiko Ohgami, Kanbun Nakaba