A method and an apparatus for measuring the output voltage on an electric fence and for producing electric pulses in said fence
CA 2119775 A1 · Owner: Eriksson, Lars-Arne · Inventors: Eriksson, Lars-Arne
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In an electric fence energising apparatus in which a chargeable , discharge capacitor is connected over the primary winding of a transformer, to the secondary winding of which the fence is connected to receive pulses at the discharge of the capacitor the, discharge time of the capacitor serves as a measure of the voltage of the corresponding output pulse on the fence. The primary winding of the transformer (T1) is divided into two oppositely connected windings (P1, P2), the discharge capacitor (C3) being arranged to be discharged through a first one (P2) of the primary windings. A voltage determined by the discharge of the capacitor is produced over the second of the primary windings …
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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 September 25, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended September 25, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 25, 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.
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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.