Vibratory sand reclaiming apparatus having normal and reject modes
CA 2484970 A1 · Owner: Musschoot, Paul · Inventors: Weichmann, Steve C.; Musschoot, Paul; Guptail, William G.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An attrition mill (10) for reclaiming foundry sand from deposited material having lumps of used foundry sand and included material includes a housing (12) defining a chamber (14) for receiving the lumps of used foundry sand and included material. A base (20) is disposed within the housing (12) and has an elevated end (22) defining a reject outlet adjacent a reject end of the mill (10) and a lower end (24), and a discharge wall (26) is positioned adjacent the base lower end (24) to define a sand outlet adjacent a sand end of the mill. A resilient support (32) is attached to the housing and a vibratory , drive (34) is attached to the housing (12) and includes first and second …
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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 April 30, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 30, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 30, 2025.
- 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
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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.