Patents by Inventor Masaharu Tashima

Masaharu Tashima 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).

  • Stator for solenoid pumps
    Patent number: 7621724
    Abstract: The stator for an electromagnetic pump is designed to improve output efficiency of the pump by decreasing leakage flux. An air-core electromagnetic coil (50a, 50b) is fitted around periphery of a cylinder, and axial end faces of an electromagnetic coil (50a, 50b) are provided with yokes (26a, 26b, 26c) made of a magnetic material.
    Type: Grant
    Filed: August 2, 2004
    Date of Patent: November 24, 2009
    Assignee: Shinano Kenshi Kabushiki Kaisha
    Inventors: Fumihiro Yaguchi, Hiroaki Usui, Masaharu Tashima
  • Electromagnetic pump driving method
    Publication number: 20070025861
    Abstract: There is provided a method of driving an electromagnetic pump where noise and vibration that accompany abrupt fluctuations in pressure inside a pump chamber are reduced. A pulse voltage is applied alternately on a positive side and a negative side to drive the electromagnetic coil such that a change in voltage that occurs when the polarity of the pulse voltage is inverted has a continuous slope at least between the positive side and the negative side.
    Type: Application
    Filed: September 6, 2004
    Publication date: February 1, 2007
    Inventors: Fumihiro Yaguchi, Masaharu Tashima
  • Stator for solenoid pumps
    Publication number: 20060239835
    Abstract: The stator for an electromagnetic pump is designed to improve output efficiency of the pump by decreasing leakage flux. An air-core electromagnetic coil (50a, 50b) is fitted around periphery of a cylinder, and axial end faces of an electromagnetic coil (50a, 50b) are provided with yokes (26a, 26b, 26c) made of a magnetic material.
    Type: Application
    Filed: August 2, 2004
    Publication date: October 26, 2006
    Inventors: Fumihiro Yaguchi, Hiroaki Usui, Masaharu Tashima