The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 30, 1981
Filed:
Aug. 22, 1979
Russell L Ault, Newark, OH (US);
Owens-Corning Fiberglas Corporation, Toledo, OH (US);
Abstract
A first mold is made by mounting a plurality of semicircular ribs of a relatively large radius on a board in spaced relationship and centered along an arc on the board with the ribs extending generally radially of the arc and having diametral portions of their peripheries facing the board, foaming a foamable hardenable liquid resin in place between each pair of adjacent ribs, and applying hardenable liquid resin over the ribs and foam. A glass fiber reinforced outer jacket for insulation is formed on and removed from the first mold. A second mold is made similarly to the first but using semicircular ribs of a relatively small radius. The outer jacket is mounted on the second mold and the space therebetween has foamable hardenable liquid resin inserted therein to form a jacketed longitudinally curved semicircular section of foamed resin pipe insulation.