Heatable glazing or calendering roll
CA 1279517 C · Owner: Zaoralek, Heinz-Michael · Inventors: Zaoralek, Heinz-Michael
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In a heatable glazing or calendering roll with a cylindrical hollow body, with bearing journals for each end of the cylindrical hollow body, with a displacement body arranged in the cylindrical hollow body, with supply and discharge lines for a fluid heat carrier which flows through the annular gap between the displacement body and the cylindrical hollow body, in each bearing journal and with a cylindrical flow chamber between the displacement body and the bearing journal there are arranged guiding means in each hollow flow chamber, which means accelerate the heat carrier at the inlet in peripheral direction and slow down the heat carrier from its peripheral speed at the outlet, so that …
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 January 29, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 29, 2008.
- 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.