Patents Assigned to Power-Tel Products Group, Inc.
  • High strength, light weight structural composite and method of preparing same
    Patent number: 4801483
    Abstract: A light weight structural composite comprised of a cellular core having high dynamic load-bearing properties and a fiber reinforced resinous skin on all edges of the core and on the top and bottom surfaces thereof. The cellular core may comprise an array of balsa wood blocks, the skin may comprise a fiberglass reinforced epoxy or polyester resin, and the core and skin may be formed into a monolithic composite which is particularly suitable for use as a high strength to weight ratio ground opening cover.
    Type: Grant
    Filed: February 13, 1987
    Date of Patent: January 31, 1989
    Assignee: Power-Tel Products Group, Inc.
    Inventors: Norton S. Beckerman, William H. Griffin