An improved rotary roller reamer
CA 2504775 C · Owner: Extreme Machining Australia Pty Ltd · Inventors: Kennedy, John Francis; Slattery, Michael Desmond; Kennedy, Mathew John
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to a roller assembly (20) for a rotary roller reamer (10). The roller assembly (20) includes a roller pin (22) and a crushing roller (24). The crushing roller (24) is arranged to be mounted on the roller pin (22) and to rotate thereabout. The roller assembly (20) is connected together so as to form a single cartridge which can be inserted into a pocket (18) of the rotary roller reamer (10) and secured thereto using a single fastener device.
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 7, 2003 and granted January 24, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 7, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 7, 2025.
- 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.