Expired Canadian patentCanada
Power and free conveyor utilizing a pair of swinging hooks
CA 2126998 C · Owner: Song, Young-Su · Inventors: Kwon, O-Won; Song, Young-Su
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This invention relates to a power and free conveyor where the chain dog of the power line should be able to move without contacting with the swinging hook or cam thereby reducing the noise and also reducing the load.
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 29, 1994 and granted December 15, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 29, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 29, 2016.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJune 29, 1994
GrantedDecember 15, 1998
Term endedJune 29, 2014
Patent numberCA 2126998 C
Classification (IPC)B61B10/00 +1 more
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.