Multi-walled pipes and storage tanks for toxic and corrosive flu

Details Multi-walled pipes and storage tanks for toxic and corrosive flu Multi-walled pipes and storage tanks for toxic and corrosive flu

1992-07-30

1993-08-03

Shoap, Allan N.

Receptacles

Receptacle having flexible, removable inner liner

Means for venting air trapped between the liner and its...

220469, 220646, 220592, 220645, B65D 2520

Patent

active

052321193

ABSTRACT:
Improved multi-wall containers and pipes for transporting fluids which have to be protected against leakage and mechanical forces, have an inner and outer wall separated by a continuous foam layer integrated into the containers. Improved strength and resistance to axial inertial pressure is provided by the method of manufacture using chopped glass fibers, continuous windings of glass fibers and suitable polyester resins and circumferential ribs spaced at stress points and integrally incorporated into the containment walls. Vessels produced according to the methods of the invention have a moment of inertia strength of about 4.67 in.sup.4 substantially eliminating torquing, buckling and rupture.

REFERENCES:
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patent: 3394841 (1968-07-01), Anderson
patent: 3489311 (1970-01-01), Folkerts et al.
patent: 3860478 (1975-01-01), Bartlow et al.
patent: 4676093 (1987-06-01), Pugnale et al.
patent: 4739659 (1988-04-01), Sharp
patent: 4781777 (1988-11-01), Pugnale et al.
patent: 4875361 (1989-10-01), Sharp
patent: 4923081 (1990-05-01), Weaver et al.
patent: 5082138 (1992-01-01), McGarvey
patent: 5143244 (1992-09-01), Kauffman

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