Patents by Inventor Shunji Hiraoka

Shunji Hiraoka 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).

  • Door locking and unlocking apparatus for a cooker using electromotive operation and manual operation
    Patent number: 4982063
    Abstract: A cooker includes a body having a heating compartment therein, and a door attached to the body to open and close the heating compartment. The door is locked in a closed position by a lock mechanism. When the door is to be opened, the lock mechanism is electromotively released by first release mechanism, or released by external mechanical force through a second release mechanism.
    Type: Grant
    Filed: January 19, 1989
    Date of Patent: January 1, 1991
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Takeshi Tsunekawa, Shunji Hiraoka, Kazuhiro Nishikawa
  • Exhaust fan with removable face cover
    Patent number: 4353680
    Abstract: An exhaust fan with a motor for driving rotatable fan blades, a case for mounting and surrounding a motor supporting frame, and a face cover detachably mounted on the case, the cover and case having portions for engagement with each other for limiting movement of the cover to a predetermined distance by engaging each other when the cover becomes disengaged from the case.
    Type: Grant
    Filed: May 27, 1980
    Date of Patent: October 12, 1982
    Assignee: Tokyo Shibaura Denki Kabushiki Kaisha
    Inventors: Shunji Hiraoka, Makoto Niwa, Satoru Ishii