Patents by Inventor Nobuki Karita

Nobuki Karita 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: 9327465
    Abstract: A retreaded tire manufacturing method, which avoids forming the buffed surface always in the same position by buffing in tire retreading and the resulting drop in delamination resistance of new tread rubber, and tires suitably retreaded by this manufacturing method are provided. In this method, the tread rubber of a tire is abraded away circumferentially to form a tread application surface of the tire to which new tread rubber is applied. And the position where the tread application surface is formed is radially changed as the repeat count of retreading rises.
    Type: Grant
    Filed: April 16, 2012
    Date of Patent: May 3, 2016
    Assignee: BRIDGESTONE CORPORATION
    Inventor: Nobuki Karita
  • Publication number: 20140045410
    Abstract: A retreaded tire manufacturing method, which avoids forming the buffed surface always in the same position by buffing in tire retreading and the resulting drop in delamination resistance of new tread rubber, and tires suitably retreaded by this manufacturing method are provided. In this method, the tread rubber of a tire is abraded away circumferentially to form a tread application surface of the tire to which new tread rubber is applied. And the position where the tread application surface is formed is radially changed as the repeat count of retreading rises.
    Type: Application
    Filed: April 16, 2012
    Publication date: February 13, 2014
    Applicant: BRIDGESTONE CORPORATION
    Inventor: Nobuki Karita
  • Publication number: 20120043001
    Abstract: There is provided an aircraft radial tire having a belt with a spiral layer formed by spirally winding a non-extensible and high-elastic cord having a tensile strength of 1500 MPa or more in the circumferential direction, the tire being capable of significantly improving uneven wear of the shoulder portion due to the “drag wear”. Provided that a ground-contact width under the given rim, given internal pressure and the given load is Wf, both of a ratio A/B of an outer diameter A of the tire at a position spaced 0.8*Wf/2 from the equatorial plane to an outer diameter B of the tire at a position spaced 0.5*Wf/2 from the equatorial plane, and a ratio C/D of an inner diameter C of the belt at a position spaced 0.8*Wf/2 from the equatorial plane to an inner diameter D of the belt at a position spaced 0.5*Wf/2 from the equatorial plane are 0.98-1.
    Type: Application
    Filed: February 22, 2010
    Publication date: February 23, 2012
    Applicant: BRIDGESTONE CORPORATION
    Inventor: Nobuki Karita
  • Patent number: 6872334
    Abstract: A method including: dropping the ultraviolet-curable resin fluid onto the aspheric face of a metallic mold set horizontally, the aspheric face having a desired concave face; bringing a convex lens close to the metallic mold and stopping the movement of the lens just before it comes into contact with the ultraviolet-curable resin fluid; inclining the metallic mold and the lens together to cause the ultraviolet-curable resin fluid to flux; after bringing the convex face of the lens into point contact with this fluxed and swelled ultraviolet-curable resin fluid, moving the lens to a prescribed position relative to the metallic mold to place the ultraviolet-curable resin fluid between the lens and the metallic mold; returning the lens and the metallic mold together from the inclined state to the horizontal state, thereby irradiating the ultraviolet-curable resin fluid with ultraviolet rays to cure the resin fluid and form a molded resin layer.
    Type: Grant
    Filed: November 12, 2002
    Date of Patent: March 29, 2005
    Assignee: Fuji Photo Optical Co., Ltd.
    Inventor: Nobuki Karita
  • Publication number: 20030099783
    Abstract: A method including: dropping the ultraviolet-curable resin fluid onto the aspheric face of a metallic mold set horizontally, the aspheric face having a desired concave face; bringing a convex lens close to the metallic mold and stopping the movement of the lens just before it comes into contact with the ultraviolet-curable resin fluid; inclining the metallic mold and the lens together to cause the ultraviolet-curable resin fluid to flux; after bringing the convex face of the lens into point contact with this fluxed and swelled ultraviolet-curable resin fluid, moving the lens to a prescribed position relative to the metallic mold to place the ultraviolet-curable resin fluid between the lens and the metallic mold; returning the lens and the metallic mold together from the inclined state to the horizontal state, thereby irradiating the ultraviolet-curable resin fluid with ultraviolet rays to cure the resin fluid and form a molded resin layer.
    Type: Application
    Filed: November 12, 2002
    Publication date: May 29, 2003
    Applicant: Fuji Photo Optical Co. Ltd.
    Inventor: Nobuki Karita