Patents Assigned to Product Research & Development Corporation
  • Patent number: 4363200
    Abstract: A precast beam for use in constructing a building includes a substantially flat middle portion extending the length of the beam and upstanding sidewalls on either side of the middle portion defining a trough which also extends the length of the beam; the trough is open at each end of the beam and the beam is provided with tensioned reinforcing rods in the middle portion along its length and a plurality of stress relieving slits spaced along the upstanding sidewalls to prevent camber developing; the reinforcing rods of the beam protrude a selected distance from the ends of the beam; a method of construction is disclosed where forms for the vertical components are set in place, the precast beam is then set in place before the cementitious material is poured into the forms for the vertical components whereby the installation and proper orientation of the reinforcing rods of the precast beam and the flooring as well as the reinforcing rods of the vertical components can be obtained.
    Type: Grant
    Filed: August 19, 1980
    Date of Patent: December 14, 1982
    Assignee: Construction Products Research and Development Corporation
    Inventor: Joseph Goldenberg
  • Patent number: 4127211
    Abstract: A drinking cup and support are disclosed for use on movable vehicles wherein the cup is retained by and removably connected to a base secured to the vehicle. A lid on the upper end of the cup is removably connected to the cup handle for retention thereby.
    Type: Grant
    Filed: September 6, 1977
    Date of Patent: November 28, 1978
    Assignee: Product Research & Development Corporation
    Inventor: John E. Zerbey