Dispenser with breath actuatable valve
CA 2764292 C · Owner: Clinical Designs Limited · Inventors: Mcderment, Iain Grierson; Bacon, Raymond John
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A dispenser for a gaseous, gas borne or droplet substance includes a breath actuatable valve for controlling the release of the substance. The valve includes a flexible tube having a portion which is kinkable for closure of the valve and movable to an open position in which the tube is un-kinked for opening of the valve. A member provided in a body of the dispenser is movable by inhalation to un-kink the flexible tube and open the valve. The movable member has a flap arranged in the body for action of breath on it on inhalation and opening of the valve. A number of operating components are made as a single injection moulding of plastics material thereby simplifying manufacture.
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 July 24, 2001 and granted April 2, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 24, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 24, 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.