Heating apparatus for heating a calender roll
CA 1290818 C · Owner: Beloit Corporation · Inventors: Wong, George H.; Shaver, Craig A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
B 61816518, ABSTRACT OF THE DISCLOSURE . A heating apparatus is disclosed for heating a calender roll. The heating apparatus utilizes heat supplied by induction heating and from a heat transfer medium . The heating apparatus includes heating channels defined by the roll. The channels extend through the roll such that the heat transfer medium is permitted to flow through the channels so that heat is transferred from the transfer medium to the roll. An induction heater is disposed adjacent to the external surface of the roll and extends along substantially the entire length of the roll such that when the induction heater is energized heat is, induced in the region of the external surface 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 October 15, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 15, 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.