Multichannel flat tube
CA 2312149 A1 · Owner: Ford-Werke Aktiengesellschaft · Inventors: Dienhart, Bernd; Krauss, Hans-Joachim; Mittelstrass, Hagen
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to a multichannel flat tube for a heat exchanger comprising a plurality of parallel flow channels (2) which are adjacent to one another in a transversal direction with regard to the tube. According to the invention, the flow channels (2) have an oval cross-section and/or the outer , surfaces of the tube have a wave-shaped cross-contour which corresponds to the flow channels in such a way that the flat tube is thinner in the vertical direction of the tube between each two flow channels than in the area of a respective flow channel. The inventive flat tube can be designed for high working pressures while having a relatively low weight and a relatively high 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 September 28, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended September 28, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 28, 2021.
- 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.