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. 25, 2025
Filed:
Apr. 06, 2022
Applicant:
Cooper-standard Automotive, Inc., Auburn Hills, MI (US);
Inventors:
Takahiro Endo, Ibaraki, JP;
Tao Nie, Rochester Hills, MI (US);
Yingping Zhang, Oakland, MI (US);
He Wenbao, Suzhou, CN;
Assignee:
Cooper-Standard Automotive Inc., Northville, MI (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
F16L 9/12 (2006.01); B32B 1/08 (2006.01); B32B 7/12 (2006.01); B32B 27/34 (2006.01);
U.S. Cl.
CPC ...
F16L 9/121 (2013.01); B32B 1/08 (2013.01); B32B 7/12 (2013.01); B32B 27/34 (2013.01); B32B 2250/03 (2013.01); B32B 2250/24 (2013.01); B32B 2307/308 (2013.01); B32B 2597/00 (2013.01);
Abstract
A multilayer tube is provided for use in with transmission oil or heating and cooling fluid applications in motor vehicles. The multilayer tube has an outer layer comprising an aliphatic or an aromatic polyamide to provide protection from the outside environment; a middle layer of a lower cost material that comprises from 20-90% of the thickness of the tube materials; and an inner layer that has excellent resistance to transmission oil or glycol coolant and temperature.