Patents Assigned to "agru" Alois Gruber Gesellschaft m.b.H.
  • Concrete protection sheet with signalling and reflective layer
    Patent number: 5425979
    Abstract: A method and apparatus for lining concrete structure elements includes a plastic sheet. The plastic sheet has a first layer formed of a heat-reflective material of a first color, with a plurality of attachments disposed on a first side thereof. A second layer is disposed upon a second side of the first layer. The second layer is formed of a material of a second color different from the first color. Reduced thermal expansion, improved concrete/liner bonding, and improved identification of defects is thereby provided.
    Type: Grant
    Filed: January 21, 1994
    Date of Patent: June 20, 1995
    Assignee: "agru" Alois Gruber Gesellschaft m.b.H.
    Inventor: Albert Lueghamer