A coiled heat exchanger and a method for making a coiled heat exchanger
CA 2354414 A1 · Owner: Antoine, Hubert · Inventors: Antoine, Hubert
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The heat exchanger includes a pair of corrugated plates (a b) connected to , one another such that the crests of their respctive corrugations (25 26) , contact. Edges (7, 7') of the sheets (a b) that correspond to the faces of , the cylindrical core (1) formed from coiling the sheets (a b) are bent and , connected such that a substantially continuous and flat wall (80) is formed between the two sheets (a, b). Portions (85) of the wall (80) are alternately cut open, left intact, and flattened so as to form a pattern of three distinct angular sectors (100, 200, 300) on the face of the core (1). These angular sectors respectively include cut-open sectors (100) configured to pass a heat …
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
- Filed November 8, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 8, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 8, 2022.
- 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.