Method and device for marking cracks in steel workpieces
CA 1080556 A · Owner: Centro-Maskin Goteborg Ab · Inventors: Gustafsson, Lennart
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Method and apparatus for marking surface cracks in steel workpieces prior to grinding for eliminating the cracks in, which the cracks are completely filled with ink supplied by a spray gun, excess ink being removed with a scraper. The ink which may, be fluorescent, makes it relatively easy for a grinding machine operator to observe a crack, as compared to present methods.
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 July 1, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 1, 1997.
- 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.