Method for producing casting molds
CA 2386369 A1 · Owner: Rettig, Jurgen · Inventors: Seiraffi, Mohammed Ali; Rettig, Jurgen; Schreiber, Holger
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 method for producing casting molds especially , comprised of cores or core packages whereby molding materials, preferably molding sands, are blown or shot into a molding chamber via a gaseous flow medium, preferably via air, and under a pressure that can be predefined. The shot and resulting solidified mold is then evacuated of air and the form is , opened, upon which the shot mold is subsequently removed. The invention is characterized in that the shooting process and/or the air evacuation process is/are controlled using detected and optionally prepared process parameters according to any predefined specification.
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 November 3, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 3, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 3, 2022.
- 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.