Patents by Inventor Jyunichi Sakamoto

Jyunichi Sakamoto 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).

  • Patent number: 5121511
    Abstract: A shower device includes a plurality of nozzles provided to a housing, supplied hot and cold water to the nozzles being turned on and off through solenoid valves which are provided in a self-maintaining type and are supplied with a power from a low voltage power source through a controller. The device is thereby made simple and easy in its installation and to be operable for a long term with considerably low voltage and small power.
    Type: Grant
    Filed: November 2, 1990
    Date of Patent: June 16, 1992
    Assignee: Matsushita Electric Works, Ltd.
    Inventors: Jyunichi Sakamoto, Tetsuya Onkura, Tsukasa Harada
  • Patent number: 5118072
    Abstract: A solenoid valve is formed with a first pressure chamber defined to be above a valve seat with and from which a valve member engages and disengages and to communicate with a fluid supply side within a valve housing, and solenoid means mounted to the valve housing with a pilot valve interposed between them while defining a pilot chamber below the pilot valve and a second pressure chamber above the pilot valve, the pilot chamber communicating with the first pressure chamber and with a fluid discharge side of the valve member. The pilot valve actuated by the solenoid means for a relatively smaller displacement allows the main valve member to be actuated to open and close the valve, whereby the solenoid means and eventually the entire valve can be minimized in size, and any impurity contained in flowing fluid can be prevented from adhering to a movable member in the solenoid means for assuring a highly reliable operation of the valve for a long term.
    Type: Grant
    Filed: November 2, 1990
    Date of Patent: June 2, 1992
    Assignee: Matsushita Electric Works, Ltd.
    Inventors: Jyunichi Sakamoto, Tetsuya Onkura, Tsukasa Harada