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:
Aug. 02, 2022
Filed:
Jul. 17, 2020
North American Pipe Corporation, Houston, TX (US);
Alexander Gorshenin, Philadelphia, PA (US);
NORTH AMERICAN PIPE CORPORATION, Houston, TX (US);
Abstract
A pipe structure has an outer layer of a skin material with a first thickness and which defines an outside diameter of the pipe structure. The pipe structure has an inner layer of a skin material with a second thickness and which defines an inside diameter of the pipe structure. The pipe structure has a core layer of a foam material disposed between the inner and outer layers and having a third thickness. The inner, outer, and core layers are formed such that the pipe structure has a tube shape in cross-section. The first, second, and third thicknesses, respectively, combine to define a wall thickness of the pipe structure. The pipe structure has improved cold impact performance according to the ratio of the thicknesses of the inner and outer layers relative to the core layer.