Sheath filtered conveyor for packaging pulverulant materials
CA 1205434 A · Owner: Carlsson, Sune · Inventors: Carlsson, Sune
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The disclosure relates to a method and an apparatus for transferring a pulverulent material from a store to a site of use or a container, for example, a large sack, in which the material is fed to a nozzle by means of a screw conveyor, air in which the material floats during its conveyance through the screw conveyor being removed by suction by the intermediary of a filter surrounding the screw conveyor and material being urged past a damper arrangement by means of the screw conveyor.
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
- Granted June 3, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 3, 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.