Flow valve operated by flow transfer means which regulate small flows of control
CA 2229659 A1 · Owner: Perez Corbalan, Sergio · Inventors: Perez Corbalan, Sergio
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A flow valve operated by flow transfer means which regulate a small control flow in order to produce a pressure differential between the sides of the sealing wall of a piston able to axially move between an opened position far from the valve seat, and a closed position in contact with the valve seat. The valve of the invention basically consists in a rigid valve body with a flow inlet opening and one flow outlet which are oriented in a substantially cross way to said inlet opening. The body of the valve has a main cavity between the flow inlet and outlet with a valve seat in the limit of the main cavity and the flow inlet. In addition the body of the, valve has one or more ducts for the …
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 20, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 20, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 20, 2019.
- 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.