Apparatus and method for air drying with reduced oxygen enrichment
CA 2047328 A1 · Owner: Schoofs, Gregory R. · Inventors: Schoofs, Richard J.; Schoofs, Gregory R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Adsorbers used to dry air frequently contain 4A or 13X molecular sieve zeolites, which are intermittently reactivated by thermal regeneration. When a thermally regenerated adsorber is repressurized, nitrogen adsorbs preferentially relative to oxygen in activated 4A and 13X molecular sieve zeolites. This produces an oxygen-enriched high pressure gas within the adsorber vessel which emerges immediately after the adsorber is brought on line. The oxygenenriched, high pressure gas can cause fires explosions, and, other deleterious effects in and downstream of such adsorber vessels. This invention provides thermally regenerated air driers, adsorbent chambers and air drying processes using …
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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 July 18, 1991. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 18, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 18, 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
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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.