Patents by Inventor Joichi Nakano

Joichi Nakano 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).

  • Hydraulic brake booster
    Patent number: 6418716
    Abstract: In a proportional booster valve V, a primary reaction piston 37 and a secondary reaction piston 38 are provided between a control piston 23 which faces at one end thereof toward a control pressure chamber 25 into which hydraulic pressure outputted from a primary master cylinder is inputted a boost pressure chambers 44 connected to secondary master cylinders, the primary reaction piston 37 being adapted to transmit at all times to the control piston 23 a reaction force corresponding to hydraulic pressure of the boost pressure chamber 44, the secondary reaction piston 38 being adapted to transmit to the control piston 23 a reaction force corresponding to the hydraulic pressure of the boost pressure chamber 44 as the hydraulic pressure of the boost pressure chamber 44 exceeds a set hydraulic pressure.
    Type: Grant
    Filed: May 16, 2001
    Date of Patent: July 16, 2002
    Assignee: Nissin Kogyo Co., Ltd.
    Inventors: Isao Matsuno, Yoshinobu Mizusaki, Joichi Nakano
  • Hydraulic brake booster
    Patent number: 6361125
    Abstract: A hydraulic brake booster includes a primary master cylinder M1, a hydraulic power source 5, a fluid tank 11 and proportional booster valves Vf, Vr for boosting an output hydraulic pressure from the primary master cylinder M1 proportionally so as to supply the hydraulic pressure so boosted to wheel brakes Bfa, Bfb, Bra, Brb, the proportional booster valves being constructed as a spool type proportional booster valve.
    Type: Grant
    Filed: December 20, 1999
    Date of Patent: March 26, 2002
    Assignee: Nissin Kogyo Co., Ltd.
    Inventors: Isao Matsuno, Joichi Nakano
  • Hydraulic brake booster
    Publication number: 20020020172
    Abstract: In a proportional booster valve V, a primary reaction piston 37 and a secondary reaction piston 38 are provided between a control piston 23 which faces at one end thereof toward a control pressure chamber 25 into which hydraulic pressure outputted from a primary master cylinder is inputted a boost pressure chambers 44 connected to secondary master cylinders, the primary reaction piston 37 being adapted to transmit at all times to the control piston 23 a reaction force corresponding to hydraulic pressure of the boost pressure chamber 44, the secondary reaction piston 38 being adapted to transmit to the control piston 23 a reaction force corresponding to the hydraulic pressure of the boost pressure chamber 44 as the hydraulic pressure of the boost pressure chamber 44 exceeds a set hydraulic pressure
    Type: Application
    Filed: May 16, 2001
    Publication date: February 21, 2002
    Inventors: Isao Matsuno, Yoshinobu Mizusaki, Joichi Nakano