Abrasive wheel for hand-guided grinding machines, in particular abrasive cutting-off wheel
CA 2114582 A1 · Owner: Ruggeberg, August · Inventors: Sinram, Diethard; Schneider, Theodor; Alfer, Peter
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An abrasive wheel in particular an abrasive cutting-off wheel comprises, an annular cylindrical inner support of metal and an abrasive ring surrounding the latter, both being connected with each other. The abrasive ring projects on both sides from the support in the direction of the common axis. The abrasive ring can be ground off completely. The support is re-usable or at least recyclable.
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 January 31, 1994. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended January 31, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 31, 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.