Bimodal fast transfer off-line uninterruptible power supply
CA 2114507 A1 · Owner: Earanky, Vijaya · Inventors: Sivakumar, Seshadri; Earanky, Vijaya
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention is directed to a single phase offline uninterruptible power supply system for direct and continuous supply of an AC signal with in-tolerance voltage and in-tolerance frequency to an electrical load connected to an output node of the system the system, comprising: a transfer switch connected between an AC mains node and the output node, controlled for switching between a mains mode and a backup mode; a backup circuit connected between the output node and a backup battery node, for receiving the AC mains power supply signal and generating a battery charge signal on the battery node while maintaining a high AC mains power factor in the, mains mode, and receiving a battery …
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 January 28, 1994. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended January 28, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 28, 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.
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.