Static structures (e.g. – buildings) – Openwork; e.g. – truss – trellis – grille – screen – frame – or... – Three-dimensional space-defining
Reexamination Certificate
2005-05-17
2005-05-17
Glessner, Brian E. (Department: 3635)
Static structures (e.g., buildings)
Openwork; e.g., truss, trellis, grille, screen, frame, or...
Three-dimensional space-defining
C052S655100, C403S170000, C403S171000
Reexamination Certificate
active
06892503
ABSTRACT:
A frame for supporting a fabric canopy or tent is formed from a number of elongate rigid cylindrical elements, tubes or rods, joined by a variety of special connectors. They form a frame of interconnected rigid trusses. Each truss has an upper chord and a spaced-apart lower chord connected by rigid members therebetween to form trusses with sufficient rigidity to span greater unsupported spans than conventional canopy frames. Each connector has a plurality of tubular receptacles for receiving the cylindrical elements and transverse threaded apertures for threaded locking fasteners for securing the cylindrical elements in place.
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Blum Alvin S.
Glessner Brian E.
Katcheves Basil
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