Pelton wheel for a turbine manufacture thereof
CA 2073538 A1 · Owner: Angehrn, Richard · Inventors: Schneebeli, Fritz; Angehrn, Richard
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The runner of a Pelton hydraulic turbine is manufactured in that the individual buckets (3) are welded to each other to form a collar and a ring (2) is formed on the inner side of the collar this ring being welded to the outer edge of the wheel disk (1) to form the runner. In one embodiment with two welded seams (4) that are adjacent to each other in the axial direction a closed, chamber (5) is formed between the ring (2) and the wheel disk (1), this chamber being filled with pressurized fluid. In the event that the pressure within the chamber (5) drops as a consequence of fatigue cracks, an alarm signal is triggered by means of a pressure sensor (9) and the machine is stopped before the …
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 July 9, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 9, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 9, 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.