Annular Wedge Patents (Class 301/22)
  • Patent number: 4129474
    Abstract: The invention provides for the retreading of tires in which the tire casing is stressed by fluid pressure inside the casing so that the casing is in a stressed condition when a new tread is applied thereto. The tire casing is stressed by positioning it on a rim and providing fluid pressure in the cavity between the rim and the casing with or without employing an expandible tube in the cavity.
    Type: Grant
    Filed: February 2, 1977
    Date of Patent: December 12, 1978
    Assignee: Republic Rubber Industries (Prop.) Ltd.
    Inventor: Aubrey W. Martin