Closure connection
CA 1291986 C · Owner: Mcdonough, Michael J. · Inventors: Mcdonough, Michael J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A heat exchanger closure connection comprises a tubular shell including an outwardly extending shell closure flange having a shell closure flange sealing surface. An inner tube is positioned within the shell and includes an outwardly extending tube closure flange. The tube closure flange includes a first sealing surface and an axially spaced apart second sealing surface. A locking flange is positioned about the tube closure flange between the first and second sealing surfaces of the tube closure flange. A first seal ring is positioned between the first seal surface of the tube closure flange and the shell closure flange sealing surface. Means are provided for transmitting axial forces on …
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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
- Granted November 12, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 12, 2008.
- 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.