Solenoid operated variable bleed pressure control valve with integral shutoff feature
CA 2416774 A1 · Owner: Boddy, Douglas Ernst · Inventors: Boddy, Douglas Ernst
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A solenoid operated bleed type port pressure control valve having an operating rod with an annular valuing surface moveable with respect to a valve seat between the control pressure signal port and the exhaust port. An inlet valve seat is formed between the inlet port and the control pressure signal port, with a ball valve seated thereon to shut off the inlet. An operating rod connected, to the armature extends through the inlet valve seat and opens the ball valve and, thereafter the annular valuing surface on the operating control bleed flow to the, exhaust and consequently the pressure in the signal outlet port.
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 January 17, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended January 17, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 17, 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.