Paper web streak drying system
CA 1066498 A · Owner: Dominion Engineering Works Limited · Inventors: Futcher, Ralph J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A moisture profiling apparatus is provided for use with continuous running webs, particularly paper but useful for other permeable webs, having a series of adjacent compartments extending transversely of the web guide means and provided with means to selectively vary the quantity velocity and temperature of gaseous drying medium impinging on the surface of the web, so as to modify variations in the moisture profile transversely of the web. The profiling hood is generally used in combination with a dryer drum which may, be a hollow drum provided with a plurality of transversely extending vacuum chambers and means to control the vacuum conditions in the drum chambers, so as to further modify …
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
- Granted November 20, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 20, 1996.
- 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.