Self-unloading magnetic coupler
CA 2452933 A1 · Owner: Brockman, John L. · Inventors: Merrill, Toby; Killen, Richard; Brockman, John L.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In a magnetic coupler, a pair of magnet rotors is slidably mounted on rods. Ferrous material on the conductor rotors attracts the permanent magnets in the magnet rotors. Under static or relative static conditions the attractive , force urges the magnet rotors toward the conductor rotors to create a minimum operational air gap therebetween. When there is a significant relative rotational velocity between the magnet rotors and the conductor rotors a , repulsion force urges the rotors apart. During start-up latch arms retain the , magnet rotors apart from the conductor rotors by a larger soft-start air gap. , During operation centrifugal force moves the latch arms out of their active …
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 May 30, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 30, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 30, 2024.
- 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.