Static structures (e.g. – buildings) – Openwork; e.g. – truss – trellis – grille – screen – frame – or... – Fabric or lattice; e.g. – indeterminate grating
Patent
1989-05-25
1992-10-20
Safavi, Michael
Static structures (e.g., buildings)
Openwork; e.g., truss, trellis, grille, screen, frame, or...
Fabric or lattice; e.g., indeterminate grating
52241, 52243, E04B 276
Patent
active
051559625
ABSTRACT:
A ceiling runner comprised of an elongated generally U-shaped channel member having longitudinally spaced openings in its web, each with one end portion shaped and sized to confine a transversely arranged upright C-stud therein. The remainder of the opening is of such size and shape as to permit the C-stud to be initially inserted therethrough with the web of its cross-section extending longitudinally of the web of the channel member and to be thereafter twisted about its longitudinal axis to a relatively transverse position to snap into place within said end portion, the web of the channel member having a retaining tab at one side and a detent and camming surface at the opposite side of the opening to cause the C-stud to flex sufficiently to snap into said end portion and to retain the C-stud within said end portion once it has snapped into place. In addition, the channel member has outwardly extending trim flanges at the free ends of its legs which extend beyond the wall-board only in a single plane parallel to the web and have no depending structure, so as to provide an acoustical angle appearance and a finished look along the line where the upper edge of the wall meets the ceiling.
REFERENCES:
patent: 1217603 (1917-02-01), Jester
patent: 1982104 (1934-11-01), Holdsworth
patent: 2105771 (1938-01-01), Holdsworth
patent: 2371921 (1945-03-01), Tucker
patent: 2909251 (1959-10-01), Nelsson
patent: 3332188 (1967-07-01), Schaefer
patent: 3461638 (1969-08-01), Balinski
patent: 4448004 (1984-05-01), Thorsell
Burkstrand George W.
Burkstrand Lowell E.
Haines Theodore S.
Burkstrand George W.
Burkstrand Lowell E.
Nawrocki Lawrence M.
Safavi Michael
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