Patents by Inventor Moriyasu Kumagai

Moriyasu Kumagai 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).

  • Process for modifying a uniformity of a tire
    Patent number: 6585918
    Abstract: A process for modifying a uniformity of a tire comprising a radial carcass ply of rubberized organic fiber cords is modifications of radial force variation (RFV) and conicity force (COF), which is carried out by dividing RFV- or COF-rejected tire into two portions and applying different thermal hysteresis to these portions under specified conditions.
    Type: Grant
    Filed: January 27, 2000
    Date of Patent: July 1, 2003
    Assignee: Bridgestone Corporation
    Inventors: Moriyasu Kumagai, Takehiro Kata
  • Tire configuration control method, holding apparatus for post cure inflation, and post cure inflation apparatus
    Patent number: 6203748
    Abstract: A post cure inflation is carried out in a state in which the position of a tire which corresponds to the peak portion of the measured radial runout of the tire whose internal portion is in a high temperature state after vulcanization is restrained or in a state in which the position between bead portions of the tire, which corresponds to the peak portion of the measured radial runout of the tire whose internal portion is in a high temperature state after vulcanization is held at a minimum width. As a result, the tire after vulcanization can be formed in an appropriate configuration.
    Type: Grant
    Filed: July 1, 1998
    Date of Patent: March 20, 2001
    Assignee: Bridgestone Corporation
    Inventor: Moriyasu Kumagai