Patents by Inventor Mitsuo Izumi

Mitsuo Izumi 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: 11931979
    Abstract: A tire vulcanization mold in which a surface roughness in the groove molding portion of the tread molding surface is made smaller than a surface roughness in the land portion molding portion, in which a surface roughness in the groove molding portion is minimized to 0.12 ?m or less in a range including at least a main groove molding portion, and in which a surface roughness in the land portion molding portion is made to be 3.2 ?m or more, is used to manufacture a tire, and when cleaning the tread molding surface, the tread molding surface is irradiated with a laser beam to remove contaminant adhered to the tread molding surface.
    Type: Grant
    Filed: July 1, 2020
    Date of Patent: March 19, 2024
    Assignee: The Yokohama Rubber Co., LTD.
    Inventors: Tsubasa Kitahara, Yoshiaki Matsumoto, Mika Nagashima, Mitsuo Tsuji, Yoshinori Izumi, Rinko Kushida, Koichiro Miyoshi
  • Patent number: 5597268
    Abstract: It is an object of the invention to provide an economical milling cutter for T shaped groove.This invention is a milling cutter for T shaped groove comprising at least three cutting edge mounting seats distributed peripherally on a body one end flange of the milling cutter, on the first cutting edge mounting seat a first cutting edge for cutting remotest part from the cutting machine being mounted, on the second cutting edge mounting seat a second cutting edge for cutting nearest part from the cutting machine being mounted, on the third cutting edge mounting seat located between the first and second seats a third round or polygonal cutting edge being mounted, and the third cutting edge projecting radially outwardly from the rotation center line of the body between and from two portions cut by the first and second cutting edges.
    Type: Grant
    Filed: December 5, 1995
    Date of Patent: January 28, 1997
    Assignee: Izumi Industry Kabushiki Kaisha
    Inventor: Mitsuo Izumi
  • Patent number: 4643411
    Abstract: A vise for clamping two works comprising a vise body having a groove of T-shaped section and first and second reference surfaces perpendicular to the groove; a pair of movable members fitted in said T-shaped groove between said first and second reference surfaces, having clamping surfaces opposed to said reference surfaces, respectively, and provided at the rear sides opposite to said clamping surfaces with inclined surfaces inclined to converge toward the T-shaped groove; a wedge fitted between said inclined surfaces; a block slidably and disengageably fitted in the T-shaped groove between said movable members; and a bolt connecting said wedge and the block for forcing the wedge toward the block. The second reference surface is disposed on a supporting member which carries an inclined third reference surface. By removing a movable member and reversing the supporting member, the third reference surface opposes the first reference surface for clamping a single work therebetween.
    Type: Grant
    Filed: August 14, 1985
    Date of Patent: February 17, 1987
    Inventor: Mitsuo Izumi