Suction regulator and fluid drainage system
CA 2428941 A1 · Owner: D'Antonio, Nicholas F. · Inventors: D'Antonio, Nicholas F.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A low cost suction regulator is disclosed in. conjunction with a fluid drainage, system that includes a suction chamber and a collection chamber. The suction regulator is comprised of an atmospheric chamber and a suction chamber separated by, a divider. An opening in the divider has a variably biased closing member associated, therewith for opening or closing the opening according to operator-selected pressure, differentials between the chambers. The closing member is movable along an axis, that differs from the direction of airflow thus eliminating the need for , damping the forces applied to the closing member. The dividing means and its closing member, will operate over the full …
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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 May 14, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 14, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 14, 2025.
- 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.