Bridges – Deck – Joint
Patent
1995-10-10
1997-07-01
Bagnell, David J.
Bridges
Deck
Joint
52668, 404 70, E04C 242
Patent
active
056425490
ABSTRACT:
A weldless grating comprising: (a) a plurality of longitudinally extending primary load bearing members having an upper portion, a lower portion and a web located between said upper portion and said lower portion, the primary load bearing member having a plurality of spaced-apart openings in said web, the openings in each of said primary load bearing members being aligned with the openings in adjacent primary load bearing members; (b) a plurality of secondary load bearing members having an upper edge and a lower edge, the secondary load bearing members provided with first slots extending downwardly through the upper edge to provide top slots and with upwardly extending slots through the lower edge to provide bottom slots located substantially opposite said top slots, the secondary load bearing members positioned in the aligned openings in said web of the primary load bearing members, said top and bottom slots in said secondary load bearing member forming a locking engagement with said web surrounding said openings in said primary load bearing members, the secondary load bearing members provided with secondary downwardly extending slots through said upper edge, secondary downwardly extending slots located between primary load bearing members; (c) a plurality of tertiary load bearing members positioned in the secondary slots in the secondary load bearing members; and (d) a rod extending through said tertiary load bearing members and said primary load bearing members locking said tertiary load bearing members in the slots in said secondary load bearing members and locking said secondary load bearing members in the openings in said primary load bearing members to form said weldless grating.
REFERENCES:
patent: 2128753 (1938-08-01), Lienhard
patent: 2190214 (1940-02-01), Nagin
patent: 2645985 (1953-07-01), Beebe et al.
patent: 2834267 (1958-05-01), Beebe
patent: 3260023 (1966-07-01), Nagin
patent: 4452025 (1984-06-01), Lew
patent: 4780021 (1988-10-01), Bettigole
patent: 4865486 (1989-09-01), Bettigole
patent: 4928471 (1990-05-01), Bartley
patent: 5463786 (1995-11-01), Mangone
Alexander Andrew
Bagnell David J.
Mangone Enterprises
O'Connor Pamela A.
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