Patents by Inventor Nakanobu Seki

Nakanobu Seki 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: 4565162
    Abstract: A steam from a water jacket of the engine is pressurized to form a pressurized steam. The steam thus pressurized is then cooled and condensed by air-cooled condenser to form a pressurized water. The pressurized water is then decompressed to have a normal pressure and then introduced into the water jacket for recirculation.
    Type: Grant
    Filed: February 24, 1982
    Date of Patent: January 21, 1986
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Nakanobu Seki, Yoshimasa Hayashi, Masakazu Uemura
  • Patent number: 4413947
    Abstract: A fan arrangement has a rotatable fan, a plurality of blades formed on the fan, and a shroud. The blades extend radially and are spaced circumferentially. The blades also extend perpendicularly to the radial direction. The base angle of each blade is set at a value of to The shroud is located on the periphery of the fan so as to cover a part of the fan in such a manner that the fan is partially exposed at its downstream part and a clearance is formed therebetween. The covering percentage of the shroud relative to the fan is set at a value of 50% to 90%. The covering percentage is defined as 100.multidot.L.sub.2 /L.sub.1, where L.sub.1 is the axial width of the outer edge of each blade and L.sub.2 is the axial distance of the shroud from the downstream end thereof to a point in the same axial position as the upstream end of the outer edge of each blade.
    Type: Grant
    Filed: September 10, 1981
    Date of Patent: November 8, 1983
    Assignee: Nissan Motor Company, Limited
    Inventor: Nakanobu Seki