Static structures (e.g. – buildings) – Openwork; e.g. – truss – trellis – grille – screen – frame – or... – Fabric or lattice; e.g. – indeterminate grating
Reexamination Certificate
2003-12-31
2009-02-17
Chapman, Jeanette (Department: 3633)
Static structures (e.g., buildings)
Openwork; e.g., truss, trellis, grille, screen, frame, or...
Fabric or lattice; e.g., indeterminate grating
C052S506060, C052S749100
Reexamination Certificate
active
07490446
ABSTRACT:
A light steel ceiling rack formed of first frame bars and second frame bars, each second frame bar having respective second horizontal top flanges terminating in beveled end edges for engaging into respective notches in the first frame bars and respective first horizontal top flanges provided with end projections for stopping below respective first horizontal top flanges of the first frame bars upon insertion of end plug strips of the second frame bars into respective mounting holes of the first frame bars to enhance the connection and to prevent formation of a gap in the connection area between each first frame bar and each second frame bar.
REFERENCES:
patent: 3142367 (1964-07-01), Brown et al.
patent: 3159252 (1964-12-01), Cotts
patent: 3175655 (1965-03-01), Brown et al.
patent: 4016701 (1977-04-01), Beynon
patent: 4128978 (1978-12-01), Beynon
patent: 5901524 (1999-05-01), Wright
patent: 6244012 (2001-06-01), McGlinchy et al.
patent: 6851238 (2005-02-01), Rebman
Chapman Jeanette
Troxell Law Office PLLC
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