Plate heat exchanger
CA 1301160 C · Owner: Alfa-Laval Thermal Ab · Inventors: Dahlgren, Arthur; Blomgren, Ralf
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In a plate heat exchanger, the heat exchange plates of which have been provided by pressing with a corrugated pattern comprising ridges and valleys, the ridges and valleys of adjacent plates extend in parallel. In each plate interspace the ridges of adjacent plates abut against each other such that the opposing valleys form parallel flow passages in the plate interspace. The ridges of at least some of the heat exchange plates are provided with depressions, which form thresholds in the valleys formed on the opposite sides of the plates by the ridges. Thresholds of this kind can be formed in the heat exchange plates such that they create a substantially larger flow resistance in the plate …
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 May 19, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 19, 2009.
- 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.