Multiple inverters for motors
CA 2529705 C · Owner: Kumar, Ajith Kuttannair · Inventors: Kumar, Ajith Kuttannair
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A non-highway vehicle including an engine a DC power source (Vdc) driven by , the engine and providing DC power via a DC bus (42 44), a traction motor , (46), a circuit for connection to the DC bus (42 44) for providing power to , the traction motor (46) and a controller. The circuit includes at least two inverters (40x, 40y) which share the power supplied to the traction motor (46). A first inverter (40x) connects between the DC bus (42 44) and the , traction motor (46) and a second inverter (40y) connects between the DC bus (42, 44) and the traction motor (46). The second inverter (40y) is in parallel connection with the first inverter (40x.) The controller (Figs. 2 5) , coordinates …
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 9, 2004 and granted July 24, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 9, 2024.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 9, 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.