Clinched tube to header joint
CA 2083408 A1 · Owner: Modine Manufacturing Company · Inventors: Cooley, Robert S.; Mattson, Norman E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
PATENT, INDEX 815, 655.00200, ABSTRACT A method of forming a tube (12) to header (18) joint (86) including the steps of inserting and open end (14) of a tube (12) into a similarly shaped flanged hole (16) in a header plate (18) so that the end (14) of the tube (12) extends somewhat beyond the flange (20). The tube (12) and header plate (18) are then secured against substantial relative movement. A first force (78) is applied to the tube end (14) in the direction of the header plate (18) to cause the tube end (14) to be directed toward the header plate (18) on a side of the flange (20) remote from the hole (16). A second force (82) is then applied to the tube end (14) in the direction of the …
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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 20, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 20, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 20, 2014.
- 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.