Patents Assigned to Rock Wool Manufacturing Co.
  • Composite rigid insulation materials containing V-grooves
    Patent number: 5310594
    Abstract: Flat, rectangular composite insulation comprising two dissimilar insulating materials on a separate flexible backing material is described. At least one of the two dissimilar materials is rigid. V-grooves are formed in the dissimilar materials extending from the surface of the insulation opposite of the flexible backing up to, but not through the flexible backing. The V-grooving permits the rigid composite insulation to be fitted to a curved surface such as a pipe.
    Type: Grant
    Filed: May 18, 1992
    Date of Patent: May 10, 1994
    Assignees: Rock Wool Manufacturing Co., Mineral Products and Technology, Inc.
    Inventors: David L. Holland, Charles M. Nelson, Thomas M. Miller, Jay C. First