Air-dust separator
CA 2043949 A1 · Owner: Belanger, Bernard · Inventors: Belanger, Bernard
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An air-dust separator is described in which the air current flows in a unidirectional fashion. The separator is made up of a separation chamber of circular-cross section where the cleaned air exits through a stack disposed at the same end as the dust exhaust. No particular device is necessary to reverse the air flow, and this separator can separate and collect particles of relatively large sizes from a mixture of air and dust.
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
- Filed June 5, 1991. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 5, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 5, 2013.
- 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.