Patents Assigned to Tyrolit Schleifmittelwerke
  • Grinding wheel containing grain-coated reinforcement fibers and method of making it
    Patent number: 4259089
    Abstract: In a grinding disc reinforcement fibres of high strength are used and such fibres or normal glass fibres are covered with a protective coating including fine grain.
    Type: Grant
    Filed: November 9, 1979
    Date of Patent: March 31, 1981
    Assignee: Tyrolit Schleifmittelwerke Swarovski K.G.
    Inventors: Walter Waizer, Harald Helletsberger
  • Improvements in or relating to an abrasive wheel
    Patent number: 4069622
    Abstract: An abrasive wheel assembly, preferably an abrasive cut-off wheel, includes a plurality of segments, each of which comprises an embedded fixing or securing plate, preferably metal, that is inserted to a certain degree into the segment and has a projecting rim part securable to a circular blade. The segment further comprises a core material, e.g. glass fiber, that extends over the total height of the segment.
    Type: Grant
    Filed: September 8, 1976
    Date of Patent: January 24, 1978
    Assignee: Tyrolit-Schleifmittelwerke Swarovski K.G.
    Inventor: Daniel Swarovski
  • Grinding wheel and hub and method of forming the same
    Patent number: 4035161
    Abstract: An abrasive body is formed with a center bore therethrough. A molding ring is placed within the center bore to define an annular space. A foamed plastic such as polyurethane is supplied to the space and when the foamed plastic sets there results a rigid and dense hub for the abrasive body. A portion of the plastic foams into the inner wall of the abrasive body.
    Type: Grant
    Filed: January 5, 1976
    Date of Patent: July 12, 1977
    Assignee: Tyrolit-Schleifmittelwerke Swarovski K.G.
    Inventors: Ernst Geissler, Wilheim Haidacher, Heinrich Ofer