Indication of the wear level of a fabric by the use of filaments
CA 2530472 C · Owner: O'Connor, Jerry · Inventors: Nilsson, Anders; Dunn, David A.; Bodbacka, Jan
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
For papermaking and other industrial fabrics it is , desirable to have a means for monitoring wear on the fabric, particularly at any point on its inner and outer surfaces, even when the fabric is installed on a machine that is operating. The invention relates to wear level indicating filaments and the fabrics made thereof. Disclosed are filaments with multiple (14 16, 18) layers , surrounding a core (12) yarn where the core and layers , are distinguishable from one another so as to indicate fabric wear. Also disclosed are conductive monofilaments used to detect fabric wear, multilayer filaments used to create a guideline on a fabric, and a conductive monofilament that also has a …
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Filed June 14, 2004 and granted August 7, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 14, 2024.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 14, 2026.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.