Rotary abrasive wheel
CA 2273653 A1 · Owner: Bailey, William K. · Inventors: Bailey, William K.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A rotary abrasive wheel is provided having a central hub at least one, generally flat abrasive sheet carried by the hub for co-rotation with the hub and means, retaining the sheet on the hub. The abrasive wheel preferably has a plurality of abrasive, sheets each with an opening through which a shank portion of the hub is received with, the ends of each sheet generally rotatably spaced or misaligned with the ends of each, adjacent sheet to provide a generally circular perimeter of the abrasive wheel. In one, embodiment, the hub preferably has an enlarged head at one end of a generally tubular, shank which has internal threads constructed to receive a threaded portion of a mandrel, …
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 June 4, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 4, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 4, 2021.
- 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.