Plate heat exchanger
CA 1138423 A · Owner: Alfa-Laval Ab · Inventors: Johansson, Borje
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In an assembly of spaced heat exchange plates each second interspace is sealed from the surrounding atmosphere by gasket means extending along the periphery of the adjacent plates forming such interspace the other inter-, spaces being sealed from the surrounding atmosphere by permanent joints between the adjacent plates forming said other interspaces. The plates have pressed corrugations in their heat exchanging surfaces and also have pressed grooves extending around said surfaces for receiving the gasket means. The premanent joints are formed along abutting bottoms of the pressed grooves of the respective adjacent plates. The seals formed by said joints and the seals formed by the gasket …
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 December 28, 1982. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 28, 1999.
- 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.