Direct-acting pressure regulator
CA 2416218 A1 · Owner: Hood, Mark E. · Inventors: Heald, Paul W.; Fitzwater, Loftus A.; Hood, Mark E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A pressure regulator has a plug (26) dividing the housing (12) into upper and lower chambers, which are connected by a vent (36). A yoke (42) is adapted to selectively close a fluid path (47) in the plug (26). A diaphragm (58) located in the upper chamber (61) responds to outlet pressure against a bias spring (64) to open the plug (26) as the outlet pressure decreases. A second bias spring (112) may also be included.
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 3, 2001. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 3, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 3, 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.