Method of increasing the temperature of shower water used in wood grinding process
CA 1180217 A · Owner: Oy Tampella Ab · Inventors: Turkia, Erkki
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method of increasing the temperature of shower water used in a wood grinding process wherein wood is ground in a grinding space (3) under a pressure exceeding atmospheric pressure and, warm shower water (G) is fed into the grinding space for improving the grinding process. In order to compensate losses of shower water replacement water (E) is added to the shower water circulating system. The replacement water is fed into the groundwood pulp (A) after the grinding space but before a steam separator. Thus cooler replacement water can be heated by the heat energy otherwise released from the groundwood pulp in the steam separator and the, temperature of the shower water can be maintained …
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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 2, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 2, 2002.
- 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.