Electrolytic finishing method of finishing a bevel gear and a method of machining an electrode used for the electrolytic finishing method
CA 2067097 A1 · Owner: Moriya, Masayoshi · Inventors: Kuwabara, Youhei; Moriya, Masayoshi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An intermediate electrode is molded by using a model gear as a mold, and finished by electrolytic machining with the model gear for forming an electrode. The electrode and a work are positioned in an electrolyte tank to form a predetermined gap between the electrode and the work, and the work is finished.
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 3, 1991. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 3, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 3, 2013.
- 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.