Static structures (e.g. – buildings) – With component having discrete prestressing means – Beam – girder – or truss construction
Patent
1993-06-21
1994-04-12
Friedman, Carl D.
Static structures (e.g., buildings)
With component having discrete prestressing means
Beam, girder, or truss construction
522238, 5222314, 312140, E04C 310
Patent
active
053014820
ABSTRACT:
A truss assembly for supporting showcases and the like includes a straight open box tube with end caps arranged for fitting over to close the box tube ends. A tension rod is fitted through the box tube and passes beneath a fulcrum arranged across the middle of the box tube, proximate to the inner surface of the box tube bottom, with the tension rod ends threaded and passed through holes that are formed through the end caps to receive a nut turned thereover. The nuts are turned against the end cap outer surfaces so as to create a tensile stress in the tension rod that is exerted through the fulcrum, tending to lift the fulcrum and box tube middle section, bowing the box tube upwardly counter a weight of a showcase containing items supported thereon, whereby the box tube is bent back to essentially a horizontal attitude. The truss assembly of the invention further provides for mounting the box tube ends to vertical support members so as to extend therebetween, maintaining a showcase thereon.
REFERENCES:
patent: 1243000 (1917-10-01), Stewart
patent: 2675695 (1954-04-01), Coff
patent: 3810337 (1974-05-01), Pollard
patent: 3971179 (1976-07-01), Bodocsi et al.
patent: 4632473 (1986-12-01), Smith
Friedman Carl D.
Jahabow Industries, Inc.
Russell M. Reid
Wilkens Kevin D.
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