Patents Examined by Afzali Sarang
  • Stress and/or temperature-indicating composition for roll covers
    Patent number: 7261680
    Abstract: An industrial roll includes: a substantially cylindrical core and a cover overlying the adhesive layer. The cover typically comprises a polymeric top stock layer which comprises a mixture of a polymeric material and at least one of a piezochromic material and a thermochromic material. In this configuration, the pressure and/or temperature experienced by the roll cover at any location thereon can be determined visually, without the need for external equipment.
    Type: Grant
    Filed: April 17, 2003
    Date of Patent: August 28, 2007
    Assignee: Stowe Woodward, L.L.C.
    Inventor: Andreas Lutz