Flow control device
CA 2153238 A1 · Owner: Sharp, John · Inventors: Sharp, John
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A flow control device (1) for insertion into a conduit to control the flow rate of fluid flow therethrough. The device (I) includes two opposed dished baffle plates (2) and (3) defining a chamber (4) therebetween. Each baffle plate has a generally centrally located orifice (6) and (7) respectively. The device (1) is adapted for positioning substantially transverse to the longitudinal extent of the conduit by means of for, example, flanges (10) and (11) or a pre-connected threaded sleeve (15) such that fluid, flow along the conduit is diverted through the orifices (6) and (7). Additional spaced baffle plates (5) may be added on the downstream side to fine tune the flow rate.
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 4, 1994. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended January 4, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 4, 2016.
- 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.