Patents by Inventor Ryouji Yamazaki

Ryouji Yamazaki 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: 8899698
    Abstract: A braking apparatus for a vehicle has: a hydraulic braking pressure control apparatus disposed on a base, including: a control valve unit for switching among a state where hydraulic passages to access a master cylinder are communicated with wheel brakes while the wheel brakes are interrupted from reservoirs, a state where the hydraulic passages are interrupted from the wheel brakes while the wheel brakes are communicated with the reservoirs, and a state where the wheel brakes are interrupted from the hydraulic passages and the reservoirs; pumps; suction valves; and regulators normally communicated the master cylinder with the hydraulic passages as well as interrupt the master cylinder from the hydraulic passages; wherein the suction valves are disposed on the base in positions closer to the suction port of the pumps than the control valve units and the regulators.
    Type: Grant
    Filed: September 2, 2003
    Date of Patent: December 2, 2014
    Assignee: Nissin Kogyo Co., Ltd.
    Inventors: Kazuhiro Noda, Ryouji Yamazaki
  • Publication number: 20040104617
    Abstract: A braking apparatus for a vehicle has: a hydraulic braking pressure control apparatus disposed on a base, including: a control valve unit for switching among a state where hydraulic passages to access a master cylinder are communicated with wheel brakes while the wheel brakes are interrupted from reservoirs, a state where the hydraulic passages are interrupted from the wheel brakes while the wheel brakes are communicated with the reservoirs, and a state where the wheel brakes are interrupted from the hydraulic passages and the reservoirs; pumps; suction valves; and regulators normally communicated the master cylinder with the hydraulic passages as well as interrupt the master cylinder from the hydraulic passages; wherein the suction valves are disposed on the base in positions closer to the suction port of the pumps than the control valve units and the regulators.
    Type: Application
    Filed: September 2, 2003
    Publication date: June 3, 2004
    Inventors: Kazuhiro Noda, Ryouji Yamazaki
  • Patent number: 6280006
    Abstract: A brake hydraulic control device for use in a vehicle, includes: a master cylinder with a first reservoir attached thereto; a second reservoir different from the first reservoir; a drive wheel control valve unit switching communication and cut-off between a drive wheel brake and the master cylinder as well as communication and cut-off between the drive wheel brake and the second reservoir; a driven wheel control valve unit switching communication and cut-off between a driven wheel brake and the master cylinder as well as communication and cut-off between the driven wheel brake and the second reservoir; and a pump having a discharge port connected between the drive wheel control valve unit and the drive wheel brake, and a suction port connected to the master cylinder through an open/close switch valve and to the said second reservoir.
    Type: Grant
    Filed: July 20, 1999
    Date of Patent: August 28, 2001
    Assignee: Nissin Kogyo Co., Ltd.
    Inventors: Masashi Kobayashi, Ryouji Yamazaki