Stock material or miscellaneous articles – All metal or with adjacent metals – Nonplanar – uniform-thickness material having symmetrical...
Patent
1986-09-16
1988-03-29
Zimmerman, John J.
Stock material or miscellaneous articles
All metal or with adjacent metals
Nonplanar, uniform-thickness material having symmetrical...
52342, 52672, 428596, E04F 1304
Patent
active
047343370
ABSTRACT:
A sheet of expanded metal lath has expanded longitudinal edge margins between which the metal sheet is selectively expanded transversely of the sheet length to define plural parallel rows of trapezoidal openings having long sides of about one inch and widths perpendicular to the long sides of about 7/32 inch. Between the selected rows of the openings, the sheet defines corresponding ones of plural rib constructions, each of which has a generally "Z" transverse cross-sectional configuration having substantially parallel non-coplaner and non-overlapping rib edge portions interconnected by a rib central portion disposed oblique to the rib edge portions. Where the unexpended thickness of the sheet is substantially 0.015 inch, the expanded metal sheet has a weight of substantially 1.8 pounds per square yard. The article has about 70% "openness", yet has adequate resistance to bending about lines across its width due to the configuration of the ribs and the sheet edge margins.
REFERENCES:
patent: 1104475 (1914-07-01), Clark
patent: 1104476 (1914-07-01), Clark
patent: 1320332 (1919-10-01), Coach
patent: 1419709 (1922-06-01), Ackermann
patent: 1537588 (1925-05-01), Curtis
patent: 1618666 (1927-02-01), Manofsky
patent: 1762322 (1930-06-01), Baker
"Rib-Lath and Rib Studs", brochure by Trussed Concrete Steel Co., Detroit, Mi. 1909, pp. 1-23.
Amico Standard Metal Lath Products, p. 2, Alabama Metal Industries Corp., date unknown.
"Amico-One Source". . . , 4 pages, Alabama Metal Industries Corp., 1986.
Tecnical Bulletin No. 101, Metal Lath/Steel Framing Assn., 6 pages, 1978.
"Western Paper Backed Metal Lath", Western Metal Lath Company, 4 pages, 1985.
Cemco catalog, p. 19, California Expanded Metal Co., date unknown.
Triton Group Ltd.
Zimmerman John J.
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