Apparatus for compacting granular molding materials by pressurized gaseous mediums
CA 1205974 A · Owner: Fischer (Georg) Aktiengesellschaft · Inventors: Tanner, Hans; Fischer, Kurt
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An apparatus for compacting granular molding materials, particularly foundry molding materials has a, plurality of tubular hollow members arranged between the pressure chamber and the molding units in the pressure, surge flow direction, for conducting the gaseous medium to the top of the molding material. With distribution of the pressure medium flow through a plurality of independent and different cross sections the lifting, force required to open the packing element is greatly reduced and the packing element can be opened rapidly. - 11 -
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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 June 17, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 17, 2003.
- 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.