Static structures (e.g. – buildings) – Openwork; e.g. – truss – trellis – grille – screen – frame – or... – Three-dimensional space-defining
Patent
1979-08-03
1981-02-17
Faw, Jr., Price C.
Static structures (e.g., buildings)
Openwork; e.g., truss, trellis, grille, screen, frame, or...
Three-dimensional space-defining
52648, 52721, E04H 1200
Patent
active
042506794
ABSTRACT:
A framing structure comprises a vertical post of hollow metal tubing having an aperture for receiving a horizontal cross-member also of hollow metal tubing. A slot is formed near one end of the cross-member to hook onto the bottom edge of the wall defining the aperture in the post. A reinforcing plug having a slot of about the same size as the slot in the cross-member is inserted into the end of the cross-member so that the slots are in substantial register. The reinforcing plug strengthens the joint by effectively increasing the wall thickness in the area of the joint, thereby allowing use of relatively thin-walled and inexpensive cross-members without having the slots compromise the structural integrity of the framing structure.
REFERENCES:
patent: 1055522 (1913-03-01), Cumming
patent: 2439049 (1948-04-01), Lesko
patent: 3195735 (1965-07-01), Jay
patent: 3237779 (1966-03-01), Eger
patent: 3358848 (1967-12-01), Johnsson
patent: 3465895 (1969-09-01), Miller
patent: 3503641 (1970-03-01), Fraser
Faw Jr. Price C.
Friedman Carl D.
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