Axial fan
CA 1106331 A · Owner: Aktiebolaget Svenska Flaktfabriken · Inventors: Saterdal, Edgar
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In an axial fan having an impeller with settable blades and wherein the root end of each blade connects via a bearing permit-, ting rotation of the blade to the outer end of a blade-attachment shaft extending substantially radially relative to the impeller the blade-attachment shaft is rigidly connected at its inner end to an impeller hub. the blade-attachment shaft is abutted against the radial outer side of the hub and is pre-tensioned by compressing said shaft in the longitudinal direction thereof against said hub.
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
- Granted August 4, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 4, 1998.
- 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.