Process for making an al ou an al alloy moulded piece with integrated canals
CA 2048187 C · Owner: Darsy, Eric · Inventors: Darsy, Eric; Meyer, Philippe
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Process for making moulded aluminum or aluminum-alloy parts comprising integrated channels for the distribution of a lubricant or the circulation of a heat transfer fluid. The process is characterized by the fact that one or more aluminum or aluminum alloy tube(s) shaped in advance is(are) placed in a mould the extremities of the tube(s) being outside the mould or any inserts which are put into it. The alloy is poured into the mould cavity and following removal from the mould, all surplus portions of the tube(s) are removed. This process applies to the mass production of moulded parts with a system of internal channels such as cylinder heads, compressor cylinders lubrication systems, …
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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 July 31, 1991 and granted April 27, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 31, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 31, 2013.
- 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.