Arbor for hole cutter and related method of use
CA 2531164 C · Owner: Irwin Industrial Tool Company · Inventors: O'Keefe, Charles M.; Korb, William B.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An arbor (10) , is provided for a hole cutter (12) having an outer surface defining , a threaded hole (16) and a pair of pin holes (18). The arbor body , (24) has a threaded end (26) for the hole cutter (12) and a pair of , bearing surfaces (36) located on opposite sides of the arbor body , (24). A pin ring (38) has a pair of drive pins (44) and an aperture , (40) having a pair of bearing surfaces (46) engageable on the , bearing surfaces (36) on the arbor body (24).
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 24, 2004 and granted September 11, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 24, 2024.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 24, 2026.
- 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.