Fluid-directing multiport rotary valve
CA 2393419 A1 · Owner: Ahlgren, Brad Kevin · Inventors: Ahlgren, Brad Kevin; Snyder, Charles B.; Fawaz, Ismail
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A rotary valve (200) for directing fluid streams which has a circular stationary head (400) having at least one and desirably multiple primary ports for connection with fluid streams at least one secondary port. The stationary head includes a number of first circular concentric channels (411) formed therein and at least one second concentric channel (412). The first and second channels are associated with the primary and secondary ports respectively. A , rotatable head (500) is provided having radial chambers each having a first , and second port for connection between a first channel and a secondary port. The rotatable head rotates against the stationary head and channels in a fluid …
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 November 22, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 22, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 22, 2022.
- 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.