Process dehumidifier regeneration control method and apparatus
CA 2413652 A1 · Owner: Crawford, Robert R. · Inventors: Crawford, Robert R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method and an apparatus for controlling airflow in a desiccant drying system having two desiccant beds (10, 12). A first diverter valve (14) communicates with each of the desiccant beds, a regeneration air inlet (22) and a process , air outlet (20). A second diverter valve (16) communicates with each of the desiccant beds, a process air inlet (18) and a regeneration air outlet (28). , First and second regeneration air control valves (24 30) are also provided , which during a cooling phase of the regeneration cycle admit a cooling bleed stream of process air to the desiccant bed being regenerated and then convey the cooling air bleed stream from the desiccant bed and through a heat …
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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 June 18, 2001. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 18, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 18, 2023.
- 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.