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:
Mar. 19, 2019
Filed:
Apr. 19, 2016
Applicant:
Shawcor Ltd., Toronto, CA;
Inventors:
Roberto Varagnolo, Venice, IT;
Marcos Mockel, Buenos Aires, AR;
Catherine Lam, Richmond Hill, CA;
Dennis Wong, Toronto, CA;
Assignee:
Shawcor, Ltd., Toronto, Ontario, CA;
Primary Examiner:
Int. Cl.
CPC ...
F16L 59/02 (2006.01); C08J 9/228 (2006.01); B29C 47/00 (2006.01); B29C 47/02 (2006.01); F16L 59/14 (2006.01); C08J 9/32 (2006.01); B29K 105/04 (2006.01); B29L 23/00 (2006.01); B29C 47/92 (2006.01);
U.S. Cl.
CPC ...
F16L 59/028 (2013.01); B29C 47/0004 (2013.01); B29C 47/0042 (2013.01); B29C 47/021 (2013.01); C08J 9/228 (2013.01); C08J 9/32 (2013.01); F16L 59/143 (2013.01); B29C 47/92 (2013.01); B29C 2947/92514 (2013.01); B29C 2947/92704 (2013.01); B29C 2947/92904 (2013.01); B29K 2105/04 (2013.01); B29L 2023/225 (2013.01); C08J 2201/024 (2013.01); C08J 2201/03 (2013.01); C08J 2300/22 (2013.01); C08J 2323/00 (2013.01); C08J 2325/06 (2013.01); C08J 2327/06 (2013.01); C08J 2355/02 (2013.01); C08J 2369/00 (2013.01); C08J 2371/00 (2013.01); C08J 2375/00 (2013.01); C08J 2377/00 (2013.01); C08J 2379/08 (2013.01);
Abstract
A method of providing a foamed insulation coating on at least a portion of a pipe, including extruding a melt stream over the pipe portion. The melt stream includes a matrix polymer and expandable fillers in an unexpanded state, the melt stream being maintained at a sufficiently high temperature to maintain the matrix polymer in extrudable form and at a sufficiently high pressure to maintain the expandable fillers in the unexpanded state. Once extruded, the expandable fillers are permitted to expand into an expanded state at a lower pressure.