Patents by Inventor Shigeyuki Shiraishi

Shigeyuki Shiraishi 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).

  • Fire extinguisher
    Patent number: 5848649
    Abstract: A fire extinguisher has a pipe member for containing a cylinder filled with liquefied extinguishing gas, and a pusher guide member and a nozzle having an ejection hole formed therein are fitted to upper and lower openings, respectively, of the pipe member. A cylinder receiver to which the cylinder is fitted is mounted to the pusher guide member, and a pusher having a needle provided with a striker pin is movably arranged within the pusher guide member. Axial movement of the pusher is inhibited by a safety plate fitted in a groove formed in the outer peripheral surface of the pusher.
    Type: Grant
    Filed: April 22, 1997
    Date of Patent: December 15, 1998
    Assignee: Katsutoshi Matsumoto
    Inventors: Katsutoshi Matsumoto, Shigeyuki Shiraishi
  • Fire extinguisher
    Patent number: 5676190
    Abstract: A fire extinguisher has a pipe member for containing a cylinder filled with liquefied extinguishing gas, and a pusher guide member and a nozzle having an ejection hole formed therein are fitted to upper and lower openings, respectively, of the pipe member. A cylinder receiver to which the cylinder is fitted is mounted to the pusher guide member, and a pusher having a needle provided with a striker pin is movably arranged within the pusher guide member. Axial movement of the pusher is inhibited by a safety plate fitted in a groove formed in the outer peripheral surface of the pusher.
    Type: Grant
    Filed: October 22, 1996
    Date of Patent: October 14, 1997
    Assignee: Katsutoshi Matsumoto
    Inventors: Katsutoshi Matsumoto, Shigeyuki Shiraishi
  • Fire extinguisher
    Patent number: 5615743
    Abstract: A fire extinguisher has a pipe member for containing a cylinder filled with liquefied extinguishing gas, and a pusher guide member and a nozzle having an ejection hole formed therein are fitted to upper and lower openings, respectively, of the pipe member. A cylinder receiver to which the cylinder is fitted is mounted to the pusher guide member, and a pusher having a needle provided with a striker pin is movably arranged within the pusher guide member. Axial movement of the pusher is inhibited by a safety plate fitted in a groove formed in the outer peripheral surface of the pusher.
    Type: Grant
    Filed: May 19, 1995
    Date of Patent: April 1, 1997
    Assignee: Katsutoshi Matsumoto
    Inventors: Katsutoshi Matsumoto, Shigeyuki Shiraishi