Patents by Inventor Seiichiro Takeshita

Seiichiro 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).

  • Construction Machine
    Publication number: 20100266458
    Abstract: Provided is a construction machine, which can suppress a rise in the temperature of a liquid reducing agent in a liquid reducing agent tank. The construction machine is provided, within an engine compartment 6, with plural heat exchangers including an oil cooler 27, a cooling fan 32 arranged opposite these heat exchangers to produce a cooling airflow for promoting heat dissipation from these heat exchanger, and a liquid reducing agent tank 40 for storing a liquid reducing agent to be supplied to an NOx reduction catalyst. The liquid reducing agent tank 40 is arranged upstream of the plural heat exchangers as viewed in a flowing direction of the cooling airflow.
    Type: Application
    Filed: December 2, 2008
    Publication date: October 21, 2010
    Applicant: Hitachi Construction Machinery Co., Ltd
    Inventors: Seiichiro Takeshita, Osamu Watanabe, Kunihiko Ikeda, Toshihiro Abe
  • Construction machine
    Patent number: 6922925
    Abstract: A construction machine of the present invention is provided, in a compartment formed by a cover, with an engine, a centrifugal fan, and a heat exchanger for exchanging heat between cooling air blown by the centrifugal fan and a specified medium, wherein the centrifugal fan and the heat exchanger are arranged further upstream than the engine with respect to flow of cooling air, so that cooling air sucked in by the centrifugal fan is led to the engine after passing through the heat exchanger.
    Type: Grant
    Filed: November 29, 2001
    Date of Patent: August 2, 2005
    Assignee: Hitachi Construction Machinery Co., Ltd.
    Inventors: Osamu Watanabe, Seiichiro Takeshita, Takaharu Nishimura, Kazuyoshi Yamada, Makoto Sugaya, Makoto Motozu, Naohiro Ishikawa, Shougo Kimura
  • Construction machinery
    Publication number: 20030110669
    Abstract: A construction machine of the present invention is provided, in a compartment formed by a cover, with an engine, a centrifugal fan, and a heat exchanger for exchanging heat between cooling air blown by the centrifugal fan and a specified medium, wherein the centrifugal fan and the heat exchanger are arranged further upstream than the engine with respect to flow of cooling air, so that cooling air sucked in by the centrifugal fan is led to the engine after passing through the heat exchanger.
    Type: Application
    Filed: October 15, 2002
    Publication date: June 19, 2003
    Inventors: Osamu Watanabe, Seiichiro Takeshita, Takaharu Nishimura, Kazuyoshi Yamada, Makoto Sugaya, Makoto Motozu, Naohiro Ishikawa, Shougo Kimura
  • Ripple reducing device
    Patent number: 6116872
    Abstract: A ripple reducing device of the present invention for reducing ripple of oil flowing through a hydraulic line includes a closed line that diverges from the hydraulic line and is closed at a terminal end thereof, and at least one restrictor that divided the interior of the closed line into a plurality of sections, between a branch point at which the closed line diverges from the hydraulic line, and the terminal end of the closed line.
    Type: Grant
    Filed: November 30, 1998
    Date of Patent: September 12, 2000
    Assignee: Hitachi Construction Machinery Co., LTD
    Inventors: Seiichiro Takeshita, Eiichi Kojima