Patents by Inventor Susumu Ubukata, deceased

Susumu Ubukata, deceased 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).

  • Thermally responsive switch
    Patent number: 5221914
    Abstract: A thermally responsive switch for protecting electric motors against overcurrent and overheating conditions includes a metallic receptacle having an elongated dome-shaped portion and an opening opposite to the dome-shaped portion, a metallic header plate secured to the one end of the receptacle so as to hermetically close the opening afterwards and having a through-aperture, a thermally responsive element disposed in the receptacle in parallel with the header plate and carrying a movable contact at one end, a rod terminal secured in the aperture of the header plate by an electrically insulating material filled in the aperture for hermetic sealing so that the terminal extends through the aperture, a fixed contact support disposed in the receptacle to be perpendicular to the terminal and having an end to which a fixed contact is secured, the support being connected at the other end to the end of the terminal projected into the receptacle, by solder, and a spring for urging the support so that it is disconnected
    Type: Grant
    Filed: September 24, 1992
    Date of Patent: June 22, 1993
    Assignee: Ubukata Industries, Co., Ltd.
    Inventors: Susumu Ubukata, deceased, Yasukazu Mizutani, Isao Higashikata, Hideki Koseki
  • Thermally responsive switch and method of making the same
    Patent number: 5196820
    Abstract: A thermally responsive switch includes an elliptic dome-shaped metal receptacle, a header metal plate hermetically secured to the receptacle and having a through-aperture at one of two longitudinal ends, an electrical conductor inserted through the aperture of the header plate and secured with an electrically insulating material such as glass, a support having at one of two longitudinal ends a fixed portion secured to the end of the conductor in the receptacle and a supporting portion positioned away from its other end in the direction of the fixed portion, a bimetal secured at one of its two ends to the supporting portion of the support and carrying a movable contact at the other end, the bimetal having a central shallow dish-shaped portion reversing its curvature with a snap action in response to the temperature, a fixed contact secured to the header plate in the vicinity of its other longitudinal end, and a calibrator interposed between the inner wall of the receptacle and the other end of the support oppo
    Type: Grant
    Filed: July 1, 1992
    Date of Patent: March 23, 1993
    Assignee: Ubukata Industries Co., Ltd.
    Inventors: Susumu Ubukata, deceased, Yasukazu Mizutani, Isao Higashikata, Hideki Koseki