Centrifugal compressor having hybrid diffuser and excess area diffusing volute
CA 2011675 C · Owner: Evans, Alfred Peter · Inventors: Craig, Timothy David; Sentz, Ross Hughlett; Evans, Alfred Peter
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A centrifugal compressor having a two, section diffuser which has a tapered section having a constant diffusing area along its radial length and a straight section having an increasing diffusing area along its radial length and a, diffusing volute having a throat area significantly larger than conventional designs.
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 7, 1990 and granted February 22, 1994. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 7, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 7, 2012.
- 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.