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. 30, 1983
Filed:
Aug. 20, 1982
Applicant:
Inventor:
Rolf Tschudin-Mahrer, Lausen, CH;
Assignee:
Irbit Holding AG, Fribourg, CH;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B32B / ;
U.S. Cl.
CPC ...
4283173 ; 428 58 ; 4283184 ; 4283197 ; 428906 ;
Abstract
A strip of impregnated and compressed foam material with delayed restoration which is rolled up into a roll, preferably for purposes of sealing, and particularly for improved sealing, the broad side of the roll is provided with a liquid-impermeable layer which adheres to the flank sides of the strip and which is expandable corresponding to the amount of restoration and has a spiral-shaped separation line corresponding to the winding joint of the s