Patents by Inventor Tamotsu Sahara

Tamotsu Sahara 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).

  • Sprinkler head
    Patent number: 4099573
    Abstract: An improved sprinkler head for use in fire retarding systems including means for confirming the presence of water pressure at the sprinkler head. The confirming means includes a valve means provided in the sprinkler head and coupled to the water input of the sprinkler head and a pressure detection port provided in the sprinkler head coupled to the water input of the sprinkler head via the valve means whereby a pressure gauge may be connected to the port and the valve means opened so that the water pressure may be determined.
    Type: Grant
    Filed: December 20, 1976
    Date of Patent: July 11, 1978
    Assignee: Hitachi Plant Engineering and Construction Co., Ltd.
    Inventor: Tamotsu Sahara