Patents by Inventor Tadashi Hishinuma

Tadashi Hishinuma 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).

  • Actuator of diaphragm type
    Patent number: 5249508
    Abstract: An actuator (1) of a diaphragm type which comprises an actuator case (2,3), a diaphragm (5) housed in the actuator case, a diaphragm plate (4) attached to the diaphragm for moving together with the diaphragm according to introduction of negative or atmospheric pressure into a negative pressure chamber (7) formed between the diaphragm and the actuator case (2) so as to actuate a device connected to the diaphragm plate. The diaphragm is formed with one or both of an annular rib (5e) having a thick-walled section and an annular expansive portion (5d) having a curved section. Therefore, the diaphragm is hard to be disengaged from the diaphragm plate even if an immoderate force is applied on the diaphragm.
    Type: Grant
    Filed: February 25, 1992
    Date of Patent: October 5, 1993
    Assignee: Jidosha Denki Kogyo Kabushiki Kaisha
    Inventors: Jiro Hasegawa, Ikuo Nakamura, Tadashi Hishinuma
  • Actuator of diaphragm type
    Patent number: RE35136
    Abstract: An actuator (1) of a diaphragm type which comprises an actuator case (2,3), a diaphragm (5) housed in the actuator case, a diaphragm plate (4) attached to the diaphragm for moving together with the diaphragm according to introduction of negative or atmospheric pressure into a negative pressure chamber (7) formed between the diaphragm and the actuator case (2) so as to actuate a device connected to the diaphragm plate. The diaphragm is formed with one or both of an annular rib (5e) having a thick-walled section and an annular expansive portion (5d) having a curved section. Therefore, the diaphragm is hard to be disengaged from the diaphragm plate even if an immoderate force is applied on the diaphragm.
    Type: Grant
    Filed: October 25, 1994
    Date of Patent: January 2, 1996
    Assignee: Jidosha Denki Kogyo Kabushiki Kaisha
    Inventors: Jiro Hasegawa, Ikuo Nakamura, Tadashi Hishinuma