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:
Dec. 21, 1982
Filed:
Mar. 11, 1981
Applicant:
Inventors:
Manfred Mass, Wuppertal, DE;
Gunter Walter, Metzingen, DE;
Assignees:
Daimler-Benz AG, Stuttgart, DE;
Herberts GmbH, Wuppertal, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B24B / ; B32B / ; B05D / ;
U.S. Cl.
CPC ...
428 35 ; 51317 ; 51319 ; 156153 ; 156668 ; 427307 ; 427322 ; 428 36 ; 428142 ; 4284248 ;
Abstract
The invention comprises a hollow body, suitable for receiving diffusible substances and made of plastics material coated with varnish resins, the external surface of which has a roughness, measured in profile according to DIN 4768, Part I, of Rz=from 2 to 150 .mu.m and R.sub.max =from 5 to 250 .mu.m on which a coating, positively linked with that surface to provide a seal against diffusion of liquids and gases present in the body, consisting of a chemically crosslinked polyurethane resin is located in a layer thickness of from 10 to 800 .mu.m.