Wireworking – Fabrics – working
Patent
1975-01-03
1978-04-04
Larson, Lowell A.
Wireworking
Fabrics, working
138175, B21F 2722
Patent
active
040821200
ABSTRACT:
A method of producing a tubular lattice reinforced concrete pipe having a socket at one end including first providing a flat rectangular lattice of longitudinal and transverse members connected at their crossing points, and then forming the flat lattice into a tube; the transverse members are highly ductile and stretchable adjacent one end and this end is expanded to form the socket portion of the reinforcement.
REFERENCES:
patent: 1158415 (1915-10-01), Boyle
patent: 1900145 (1933-03-01), Whiting
patent: 2691906 (1954-10-01), Finch
patent: 3466920 (1969-09-01), Parker
patent: 3578036 (1971-05-01), Francois
Larson Lowell A.
Trefilunion
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