Method of and apparatus for controlling thickness of coating applied to moving fabric
CA 1093396 A · Owner: Armstrong World Industries, Inc. · Inventors: Welch, Henry W.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A fabric to have a coating of controlled thickness applied to its upper surface moves between a supporting roll and a supporting plate. The lower surface of the fabric contacts the supporting roll and supporting plate but is unsupported therebetween. Between the supporting roll and plate the moving, fabric is depressed by a blade extending across its width. Near to the blade and between this blade and the supporting plate a coating is applied to the upper surface of the fabric. A gauging device adjacent to where the coating is applied controls the thickness of the coating. The distance between the blade which depresses the fabric and the supporting plate should be several orders of …
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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
- Granted January 13, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 13, 1998.
- 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.