Patents by Inventor Eiji Ejiri

Eiji Ejiri 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).

  • Coreless torque converter
    Patent number: 5271716
    Abstract: A coreless torque converter includes a pump impeller provided with coreless blades each having a first leading edge directed forward; a turbine runner provided with coreless blades each having a second leading edge directed rearward; and a stator provided with coreless blades each having front and rear edges which face the second and first leading edges respectively. Each of the first and second leading edges extends generally straight connecting radially outward and inward terminal ends thereof.
    Type: Grant
    Filed: September 16, 1992
    Date of Patent: December 21, 1993
    Assignee: Nissan Motor Co., Ltd.
    Inventor: Eiji Ejiri
  • Coreless torque converter
    Patent number: 5255516
    Abstract: In a torque converter of a coreless type allowing and utilizing a fluid flow in a central core region, the impeller blade exit angle is made smaller in the central core region than in an outer region surrounding the core region so as to increase the velocity and amount of the fluid flow circulating in the outer region and participating in torque multiplication, and decrease the velocity and amount of the fluid flow circulating in the core region like the fluid flow in a fluid coupling.
    Type: Grant
    Filed: April 27, 1992
    Date of Patent: October 26, 1993
    Assignee: Nissan Motor Company, Ltd.
    Inventors: Eiji Ejiri, Kazuhiro Takeda
  • Coreless torque converter
    Patent number: 5224348
    Abstract: A coreless torque converter has a unique layout or arrangement of stator, pump impeller and turbine runner, in which at least one of these elements has a portion formed to have an axial dimension which is reduced to minimize an offset amount of a center of swirl generated by working fluid recirculating through the converter to provide a high torque ratio and improved efficiency.
    Type: Grant
    Filed: July 24, 1991
    Date of Patent: July 6, 1993
    Assignee: Nissan Motor Co., Ltd.
    Inventor: Eiji Ejiri