Gas-cooled electric machine
CA 2080892 A1 · Owner: Pongracz, Sandor · Inventors: Zimmermann, Hans; Pongracz, Sandor
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In gas-cooled electric machines having a stator (3) and a rotor (6) on which an axial ventilator (9) is arranged, the cooling gas flows unevenly into the endwinding cavity (13) seen in the circumferential direction. By providing upstream of the axial ventilator (9), when seen in the direction of flow of the cooling gas, and coaxially with said ventilator an annular air guide member (1) having baffles (17), and reducing the flow cross section for the cooling gas flowing through the air guide member (1) in the main direction of the approach flow on a part of the outer circumference of the air guide member (1) by means of a covering (23) the cooling effects becomes more even and the axial …
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 October 19, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 19, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 19, 2014.
- 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.