Patents Assigned to Concrete Precast Products Corp.
  • Precast concrete structure having light weight encapsulated cores
    Patent number: 6460213
    Abstract: A precast concrete bridge system containing one or more sections wherein each section includes a horizontally disposed, load-bearing span that is integrally cast with a pair of vertical side walls. Each wall contains lightweight cores encapsulated in the concrete to create a series of longitudinally extended beams in each wall so that the beams in one wall are coaxially aligned with the beams in an adjacent wall. The cores constitute between 16-35 % of the total section volume.
    Type: Grant
    Filed: August 7, 2000
    Date of Patent: October 8, 2002
    Assignee: Concrete Precast Products Corp.
    Inventors: John L. Flint, Daniel C. Hogan