Fan with integrated fan motor
CA 2374096 A1 · Owner: Voith Paper Patent Gmbh · Inventors: Hannu, Esa
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The revolving fan impeller of a fan includes a fan blade ring which is used , to produce an, air current as well as a turbine blade ring, which is used to drive the impeller an,d which may be, impinged upon by a pressurized fluid. The fan casing includes a feed channel for the pressurized, fluid as well as several nozzles to carry the pressurized fluid from the feed channel to the turbine , blade ring. The number of active nozzles may be varied. For this purpose the , nozzles are, arranged on a stator ring which may be rotated around the fan axis.
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 1, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 1, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 1, 2024.
- 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.