Self lubricating and cleaning injection piston for cold chamber injection unit
CA 2475419 A1 · Owner: Dbm Industries Ltd. · Inventors: Coronado, Jean; Perrella, Guido
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to a plunger tip for use in a cold chamber die casting machine having an annular arcuate recess with pressurized air and lubrication nozzles located annularly within said recess and to a method for scraping, cleaning and lubricating the injection sleeve utilizing the plunger tip.
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
- Filed December 17, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 17, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 17, 2021.
- 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.