Laminar flow elbow system
CA 2186254 C · Owner: Calafell, Dag O. Ii · Inventors: Mutsakis, Michael; Hsieh, Chang-Li; Calafell, Dag O. Ii
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An improved laminar flow elbow sys-, tem and method (10B) wherein the elbow system comprises a straight pre-pipe section (22) to define the flow path of a fluid; the pipe section included directly prior to the inlet of a curved pipe section (14) and having and comprising a plurality of vanes (30) to impart a rotation to the fluid before passing through a curved pipe section (14) to provide a generally flat velocity profile at the exit of the curved pipe section and to minimize turbulence of the fluid as it passes through the curved pipe section, and a substantially straight post-pipe section (24) to define a flow path exit pipe section included directly at the exit of the curved pipe …
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 March 21, 1995 and granted March 7, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 21, 2015.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 21, 2017.
- 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.