Method and apparatus for the removal of sand bales containing castings from molding boxes of poured foundry molds
CA 1101186 A · Owner: Buhrer, Erwin · Inventors: Buhrer, Erwin
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method for removing sand bales containing castings from molding boxes of poured foundry molds comprising the steps of: clamping the molding boxes together in a horizontal position; supporting the sand bales from below with a predetermined supporting force independently of the molding boxes said, predetermined supporting force being provided for at least a portion of the weight of the sand bales; applying to the molding boxes accelerative forces acting in a vertical direction while maintaining the supporting force for the sand bales,the accelerative forces being applied temporarily in a direction only which is opposite to a force resulting from the weight of said sand bales and said …
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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 May 19, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 19, 1998.
- 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.