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:
Feb. 21, 1995
Filed:
Jan. 27, 1993
Applicant:
Inventor:
Erwin Brunnhofer, Guxhagen, DE;
Assignee:
Technoflow Tube-Systems GmbH, Fuldabruck, DE;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
F16L / ;
U.S. Cl.
CPC ...
138137 ; 138103 ; 138141 ; 138177 ; 2642091 ;
Abstract
A layered tubing for use in a motor vehicle has a thick tubular inner layer formed of a synthetic resin having a predetermined hardness and a predetermined thickness and a thin tubular outer relax layer bonded externally to and surrounding the inner layer. This outer layer is formed of a synthetic resin having a hardness equal to at most 0.8 of the hardness of the inner layer and a thickness equal to at most 0.5 of the thickness of the inner layer. The inner layer can be one layer or can be formed of a plurality of coextruded and coaxial sublayers.