Patents Represented by Attorney J. J. O'Keefe

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  • Culvert structure having corrugated ribbing support
    Patent number: 4318635
    Abstract: A low-profile culvert structure comprising in combination, a plurality of arch-shaped corrugated structural metallic sheets secured to each other in such a manner as to form an elongated shell having typically a low rise to span ratio, and a plurality of transverse reinforcing ribs, each in the form of a corrugated metallic sheet. The transverse reinforcing ribs are secured to said shell at intervals along the length thereof, preferably to both the interior and exterior of the elongated shell.
    Type: Grant
    Filed: July 7, 1980
    Date of Patent: March 9, 1982
    Assignee: Bethlehem Steel Corporation
    Inventors: Mark A. Gurtner, Charles D. Gorman