Method of manufacturing a control wheel for the high- pressure rotor of a steam turbine
CA 1253810 A · Owner: Bbc Brown Boveri Ag · Inventors: Slepcevic, Paul; Barcella, Santino; Befeld, Manfred
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A control wheel intended for welding onto the high-pressure rotor of a steam turbine is manufactured from a ring of individual blades welded together. For this purpose, all the individual blades are provided with welding grooves (4) on the shrouds (2) and the root platforms (3). After welding together to a ring closed on all sides, the control wheel is annealed machined and, finally heat-treated.
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 May 9, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 9, 2006.
- 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.