Patents Assigned to Forma Block, Inc.
  • Trench structure
    Patent number: 5592784
    Abstract: A trench structure for a drain or chase is presented which can be quickly and economically constructed. A unique cap block, which has a notched face section for accepting a drain grate or trench cover and a laterally offset horizontal support section for retaining a paving member, forms the top rows of the trench side walls.
    Type: Grant
    Filed: October 27, 1994
    Date of Patent: January 14, 1997
    Assignee: Forma Block, Inc.
    Inventor: Kirk N. Nivens