Cutting bit for percussion tool
CA 1064253 A · Owner: Kango Electric Hammers Limited · Inventors: Forster-Cooper, Clive J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A percussive tool is provided with a bit which comprises a shank, by which the bit is held in the tool and, a flexible blade made from a springy metal such as bainitic steel or phosphor bronze. 1.5mm has been found to be a particularly satisfactory thickness for the tip portion of the blade. Deposits of plaster, cement, caked oil and other deposits all of which can be highly resistant to removal by rigid-bladed bits from surfaces on which they have become hardened have proved surprisingly easy to remove using a springy metal blade. The new blade is also very effective in removing tiles which have been cemented to a surface.
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 October 16, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 16, 1996.
- 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.