Patents by Inventor Tetsuo Uchihama

Tetsuo Uchihama 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).

  • Safety shut-off valve
    Patent number: 4463773
    Abstract: A safety shut-off valve opening a flow path between the primary and secondary sides in case of usual operation, while shutting off the aforesaid path in response to an emergency shut-off signal, and particularly such safety shut-off valve cannot be reset unitl it is confirmed that there is no more leakage of gas on the secondary side of the shut-off valve after the shut-off action was once effected, thereby to attaining a very high safeness.
    Type: Grant
    Filed: March 15, 1982
    Date of Patent: August 7, 1984
    Assignee: Yamatake-Honeywell Co., Ltd.
    Inventors: Tadashi Kojima, Tetsuo Uchihama, Kazuyoshi Tanaka, Eiichi Morozumi, Kentaro Inoue, Naomichi Shito
  • Electromagnetic actuator
    Patent number: 4458487
    Abstract: An electromagnetic actuator utilizing a fluid pressure obtained from an electromagnetic pump, wherein according to the present invention, there is provided a responsive member displaceable in response to the pressure of a fluid forced into a second chamber from a first chamber. The responsive member displaceable as described can operate a valve member or the like coupled thereto in an on-off control or a proportional control with a large stroke in a reliable manner.
    Type: Grant
    Filed: March 15, 1982
    Date of Patent: July 10, 1984
    Assignee: Honeywell Inc.
    Inventors: Tadashi Kojima, Tetsuo Uchihama, Kazuyoshi Tanaka, Eiichi Morozumi, Kentaro Inoue, Hitoshi Tanaka, Shyuji Morio, Shunji Ichida