Method of detecting load current
CA 2084466 A1 · Owner: Ishihara, Manabu · Inventors: Nakae, Tsugio; Ishihara, Manabu; Funagoshi, Tomohide
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In order to increase the capacity of an electric load by relatively accurately detecting an operating current flowing in the electric load without a delay and setting a preset value, at which the supply of power to the load is cut, to be close to an permissible current value, this invention includes a current transformer for detecting a current flowing in the load an A/D, converting section for converting an output voltage from the secondary side of the current transformer into digital data, and a calculating section for obtaining the average value of the digital data, whereby a current value corresponding to the average value is output as a current flowing in the load. - 29 -
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 December 3, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 3, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 3, 2014.
- 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.