Turbine blade repair
CA 2178006 A1 · Owner: Turbine Blading Limited · Inventors: Fraser, Michael James
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method of repairing a turbine blade in which damaged material around a lacing wire hole is removed by machining or chemical etching. New metal is then added by welding such that the lacing wire hole is much smaller or completely eliminated and prior to re-forming the lacing wire hole, flats may be formed either by the addition or removal of metal in the region of the lacing wine hole so that a lacing wire hole forming drill or machine bit can enter the turbine blade at a surface substantially normal to its direction of travel thereby minimising, any tendency of the lacing wire hole forming drill or machine bit to snatch or for the blade to vibrate.
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 December 1, 1994. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 1, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 1, 2016.
- 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.