Rotary drill
CA 1071906 A · Owner: Sandvik Aktiebolag · Inventors: Faber, Kurt H. A. E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract of the Disclosure A drill comprising a shank is provided with two axially extending chip removal recesses and at least two cutting inserts, said inserts being provided radially and comprising one peripherally located insert adjacent one said chip removal recess, the edge of said insert extending radially such as to form the diameter of the hole and one insert, located adjacent the other said chip removal recess while being located radially inside the periphery of the drill said, inserts extending axially to basically the same extent. The innermost insert has such radial location and is angled away from the peripheral insert at an angle of such value that as seen radially, force …
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 February 19, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 19, 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.