Patents by Inventor Hedemasa Kawaguchi

Hedemasa Kawaguchi 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).

  • CONTROLLER AND CONTROL METHOD OF BELT TYPE CONTINUOUSLY VARIABLE TRANSMISSION
    Publication number: 20120135829
    Abstract: Provided is control device and method for a belt type continuously variable transmission which can reduce drive energy consumption by a decrease in belt friction when the estimated accuracy of belt slip condition is high and which can prevent the belt from greatly slipping during belt slip control when the estimated accuracy of belt slip condition is low. The device includes a primary pulley (42), a secondary pulley (43), and a belt (44) and controls gear ratio based on the running radius of the belt (44) on the pulley by controlling the primary oil pressure and the secondary oil pressure. A belt type continuously variable transmission (4) comprises a belt slip control means (FIG.
    Type: Application
    Filed: April 30, 2009
    Publication date: May 31, 2012
    Inventors: Katsumi Doihara, Yoshihisa Kodama, Yasuaki Yoshikawa, Masahiro Nishi, Keisuke Koyama, Kenta Nakamura, Kiyotaka Sawano, Hedemasa Kawaguchi