Tight joining between metallic tubes, tubular elbow and end plate used in thermoelectric device
CA 1234878 A · Owner: Air Industrie · Inventors: Huard, Jean-Francois
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Exchanger tubes are mechanically fastened together by end plates into superposed layers to form hydraulic connections between the extremities of two tubes using tubular elbows. Each tubular elbow carries at its extremeties a tubular connecting coupling which can be welded, brazed or glued. The subassembly comprising an elbow with tubular coupling is encased in cylindrical recesses provided on the external faces of each end plate and is mechanically locked by pairs of straight pins in bored parallel holes orthogonally placed with respect to the axis of the tubes. Each pin is embedded in an external groove of the tubular coupling rolled over half of its circular section.
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 April 5, 1988. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 5, 2005.
- 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.