Movable backup bar assembly
CA 2239669 C · Owner: Bailey, Ronald L. · Inventors: Hook, Christopher A.; Bailey, Ronald L.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A movable backup bar assembly is disclosed which has two positions: a first position for holding a drive chain in engagement with a chain to be driven and a second position for holding the drive chain away from the driven chain and a manual actuator, for positively shifting the assembly between these two positions without using any tools or special skills.
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 4, 1998 and granted December 11, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 4, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 4, 2020.
- 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.