Patents by Inventor Michio Ohtsuka

Michio Ohtsuka 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: 5406792
    Abstract: A quick acceleration fluid coupling comprising: a fluid coupling working chamber defined by an impeller attached to a driving shaft, a runner attached to a driven shaft, and an impeller casing attached to the impeller and surrounding the runner; and a passage for supplying hydraulic oil into the fluid coupling working chamber; wherein the passage includes a control valve operable to be fully opened and closed rapidly, and a bypass passage having an oil control orifice, which bypasses the control valve; thereby the rotational speed of the driven shaft can be changed rapidly from the lowest to the highest or vice versa.
    Type: Grant
    Filed: August 30, 1993
    Date of Patent: April 18, 1995
    Assignee: Ebara Corporation
    Inventors: Katsumi Kimura, Ryuji Sakai, Hiroshi Ogata, Kazuo Hattori, Michio Ohtsuka