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. 07, 1990
Filed:
Jul. 01, 1988
Valmet Paper Machinery Inc., Heksinki, FI;
Abstract
A method and an apparatus for severing a perforated web involves clamping the web (4) by two clamping members (6, 7) extending essentially transversely over the web (4) against an anvil (1) placed on the opposite side of the web (4) so as to leave a perforated line (5) of the web aligned between the clamping members (6,7). The clamped web is then tensioned by allowing a tensioning member (2) located between the clamping members (6,7) to expand toward a backing bight (20, 21) formed behind the web (4) thus causing the web (4) to be severed at the perforation (5) with the help of tensile stress.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile