Patents by Inventor Seiichirou Takeshita

Seiichirou Takeshita 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).

  • Fan device and shroud
    Patent number: 6390770
    Abstract: A fan apparatus includes a fan having a plurality of blades and producing an air flow with revolution thereof. At least one shroud is disposed upstream of the fan for introducing the air flow to the suction side of the fan. Damping means are provided for taking in the air flow coming out of the fan and damping a radial component of the air flow under an interference action outside an outer periphery of the fan.
    Type: Grant
    Filed: February 3, 2000
    Date of Patent: May 21, 2002
    Assignee: Hitachi Construction Machinery Co., Ltd.
    Inventor: Seiichirou Takeshita
  • Cooling apparatus for construction machine, and construction machine
    Patent number: 6192839
    Abstract: A cooling apparatus for a construction machine, has at least one heat exchanger including a radiator for cooling water used to cool an engine of a hydraulic excavator, and a rotating cooling fan for producing cooling air to cool the heat exchanger. A substantially disk-shaped flow guide means having an outer diameter size smaller than an outer diameter size of the cooling fan is provided on the blowoff side of the cooling fan.
    Type: Grant
    Filed: May 17, 1999
    Date of Patent: February 27, 2001
    Assignee: Hitachi Construction Machinery Co., Ltd.
    Inventors: Seiichirou Takeshita, Osamu Watanabe