Method of affixing tubes to headers in a heat exchanger and a heat exchanger assembly of tubes, headers, and fins
CA 1262125 C · Owner: Allen Group, Inc. (The) · Inventors: Calleson, Gerald C.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A new and improved automotive heat exchanger and a method of assembling tubes in a header of a heat exchanger comprising shaping, the ends of non-circular cross section tubes into a substantially circular cross section, forming collared openings of substantially circular cross section in a header wall inserting the tube ends, into the openings and bonding the tubes to the header wall.
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 October 3, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 3, 2006.
- 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.