Deburring tool with cutting blades
CA 2003735 C · Owner: Heule, Heinrich · Inventors: Heule, Heinrich
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A deburring tool with blades is described for, deburring both sides of the edges of boreholes with at least, one blade, consisting of a rectangular edged cutting body, with conically shaped cutting edges with undercut ground, open surfaces and with a contact surface on the front of the cutter head for contact with the interior of a borehole. The deburring tool produces bevels of a precisely defined size on the front and rear sides of boreholes. For this purpose a slide section is formed, departing from the angle of the cutting edge, which extends in the direction of the axial exterior part of the cutter blade and continues into a slide radius formed on the front of the cutting blade.
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 November 23, 1989 and granted January 11, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 23, 2009.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 23, 2011.
- 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.