Static structures (e.g. – buildings) – Openwork; e.g. – truss – trellis – grille – screen – frame – or... – Side-by-side terminus shafts; e.g. – truss
Patent
1976-06-09
1977-12-27
Perham, Alfred C.
Static structures (e.g., buildings)
Openwork; e.g., truss, trellis, grille, screen, frame, or...
Side-by-side terminus shafts; e.g., truss
52488, 52669, 403247, 403253, 403353, 403363, E04B 552
Patent
active
040646718
ABSTRACT:
A stabilizer strut extending transversely between grid members in a supporting grid system and the like. The strut includes a pair of leg portions disposed at right angles to one another with each end of the strut including a pair of aligned slot portions for engagement with an underlying grid member. Each grid member includes an upstanding web means surmounted by a bead means wherein the latter receives the pair of aligned slot portions which are open at the non-adjacent, lateral edges of the strut leg portions. One slot on each end of the strut corresponding to one another include a locking projection extending inwardly from the side of the slot at a point adjacent to the open end thereof at the lateral edge of the strut. The locking projection is adapted to extend beneath the bead means of a grid member to restrain the strut against vertical uplift while the other slot at each end of the strut is of a width adapted to be received over the bead means so as to be in sufficient lateral engagement therewith to provide stabilized lateral support between the grid members.
REFERENCES:
patent: 839723 (1906-12-01), Bury
patent: 3032833 (1962-05-01), Stanley
patent: 3092221 (1963-06-01), Parsons et al.
patent: 3503641 (1970-03-01), Fraser
patent: 3640042 (1972-02-01), Kidney
patent: 3755988 (1973-09-01), VAN DER Shuys
Perham Alfred C.
Roblin Industries, Inc.
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