Patents Assigned to Sumimoto Rubber Industries, Ltd.
  • Cutter supporting unit for tire grooving apparatus
    Patent number: 5065804
    Abstract: A cutter supporting unit for a tire grooving apparatus having a tire supporting shaft and a cutter supporting unit which brings a cutter in or out of contact with a tire held by the tire supporting shaft, wherein that said cutter supporting unit includes a cutter holder which holds the cutter and a cutter supporting frame to which the cutter holder is releasably connected. The unit largely reduces time and labor necessary for the cutter replacement and improves tire grooving productivity.
    Type: Grant
    Filed: April 1, 1991
    Date of Patent: November 19, 1991
    Assignee: Sumimoto Rubber Industries, Ltd.
    Inventors: Satoru Kinuhata, Masao Takami, Eiji Shibata, Tadahiko Tamura
  • Elastomer composition comprising a blend of SBR rubbers
    Patent number: 4471093
    Abstract: A rubber composition having improved rolling resistance and wet grip characteristics with improved processability, abrasion resistance and durability which contains as a rubber component a mixture of a high molecular weight styrene-butadiene rubber having a specific microstructure and a low molecular weight styrene-butadiene and/or butadiene rubber having a specific microstructure. The composition is particularly suitable for use in tread of tires.
    Type: Grant
    Filed: February 28, 1983
    Date of Patent: September 11, 1984
    Assignees: Sumimoto Rubber Industries, Ltd., Sumitomo Chemical Company, Limited
    Inventors: Hiroshi Furukawa, Yuichi Saito, Keisaku Yamamoto, Akio Imai, Nobuyuki Yoshida, Yasushi Okamoto
  • Motorcycle tire
    Patent number: D292077
    Type: Grant
    Filed: March 22, 1985
    Date of Patent: September 29, 1987
    Assignee: Sumimoto Rubber Industries, Ltd.
    Inventor: Kiyoshi Funahara
  • Automobile tire
    Patent number: D292078
    Type: Grant
    Filed: April 19, 1985
    Date of Patent: September 29, 1987
    Assignee: Sumimoto Rubber Industries, Ltd.
    Inventor: Akihiro Takeuchi
  • Motorcycle tire
    Patent number: D293228
    Type: Grant
    Filed: March 22, 1985
    Date of Patent: December 15, 1987
    Assignee: Sumimoto Rubber Industries, Ltd.
    Inventor: Nobuyuki Sakaki