Inverter device
CA 2310212 A1 · Owner: Morishita, Takashi · Inventors: Morishita, Takashi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method and apparatus for conducting regenerative braking for a motor load is disclosed, wherein the load is driven by a plurality of power cells on each phase-line to the load, the plurality, of power inverters comprising at least one single phase power inverter and at least one 3-phase, inverter wherein the 3-phase inverter is connected across 3-phase lines. First, it is detected when the, motor load is regenerating a motor load voltage. Then each single phase , inverter in each phase line is shorted out after detecting the motor load regeneration. The motor load voltage is then supplied, to the 3-phase inverter. Finally the load motor voltage is lowered by , conducting regenerative …
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 29, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 29, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 29, 2022.
- 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.