Inventors:
Peter J. Pugnale - The Woodlands TX
Andrew A. Mance - Toledo OH
Assignee:
Owens-Corning Fiberglas Corporation - Toledo OH
International Classification:
B31C 1300
B65H 8100
Abstract:
A double-wall tank having inner and outer walls bonded to connecting hollow annular ribs. Passageway means through the ribs enable leak-detecting liquid to fill the spaces between ribs, within ribs, and between end caps.