Papermakers and like fabrics
CA 2072486 A1 · Owner: Rouhling, Jean A. M. · Inventors: Rouhling, Jean A. M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A fabric for use in supporting a cellulose pulp sheet during passage through a Flakt dryer is proposed which, is of asymmetric double weave construction the fabric being, folded into V-shaped configuration and there being essentially uncrimped, essentially inextensible load bearing yarns positioned between the weft yarns of the respective fabric layers and extending in the longitudinal direction of the fabric, adjacent ones of the load bearing yarns being separated by warp yarns of the less densely woven inner layer which weave also with the weft yarns of the outer layer. The more densely woven outer layer protects the load bearing yarns from wear and from the adverse effects of heat .
Read the whole patent
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 26, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 26, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 26, 2014.
- 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.