Patents by Inventor Hideki Igawa

Hideki Igawa 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).

  • Steering valve device
    Patent number: 6513620
    Abstract: The object of the present invention is to offer a steering valve device which can reduce both space of the valve assembly in the vehicle and increment of cost and time for manufacturing the device. The steering valve device has a main valve and a correction valve in a housing. The main valve has a supply port, a drain port, and a pair of a right and a left outlets. The main valve is constructed such that either of the right and the left outlets allows to flow the hydraulic fluid, and the other allows to receive the hydraulic fluid according to an operation of a steering wheel. The correction valve has a communicating passage to communicate the right and the left outlets, and a ball to open and close the communicating passage.
    Type: Grant
    Filed: December 8, 2000
    Date of Patent: February 4, 2003
    Assignee: Kabushiki Kaisha Toyoda Jidoshokki Seisakusho
    Inventors: Hideki Igawa, Mitsuhiro Tanaka
  • Steering valve device
    Publication number: 20010013368
    Abstract: The object of the present invention is to offer a steering valve device which can reduce both space of the valve assembly in the vehicle and increment of cost and time for manufacturing the device.
    Type: Application
    Filed: December 8, 2000
    Publication date: August 16, 2001
    Inventors: Hideki Igawa, Mitsuhiro Tanaka