Heatable glazing or calendering roll
CA 1264589 C · Owner: Neuhoffer, Hans-Friedrich · Inventors: Vomhoff, Erich; Neuhoffer, Hans-Friedrich
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 having a cylindrical hollow body with flange necks for each end of the cylindrical hollow body, a displacement body disposed in the cylindrical hollow body and supply and discharge lines for a fluid heat carrier flowing through the annular gap between the displacement body and the cylindrical hollow body by selecting a, suitable material for the flange necks and/or by corresponding thermal insulation between cylindrical hollow body and flange necks it is achieved that the flange necks on heating up of the cylindrical hollow body expand less than the cylindrical hollow body and thereby bending moments are generated in the cylindrical hollow body …
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 23, 1990. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 23, 2007.
- 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.