Method of, and apparatus for, manufacturing foundry molds, especially for compacting foundry molding material
CA 1265313 C · Owner: Boenisch, Dietmar · Inventors: Boenisch, Dietmar
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
INVENTION : METHOD OF, AND APPARATUS FOR MANUFACTURING, FOUNDRY MOLDS, ESPECIALLY FOR COMPACTING FOUNDRY MOLDING MATERIAL, Foundry molding material is poured or pneumatically infed into a mold frame arrangement containing at least one pattern, a molding frame and a filling frame. Subsequently the foundry molding material is compacted by a compacting arrangement containing, for example, any one of a compressed-air surge compacting device a combustion-force, surge compacting device a pressure compacting device, a, vibrational compacting device or a combined pressure-and-vibrational compacting device. Also during such compacting operation at least the predominant portion of the foundry molding …
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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 February 6, 1990. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 6, 2007.
- 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.