Method and devices for controlling loads connected to a power line
CA 2452270 C · Owner: Vlaamse Instelling Voor Technologisch Onderzoek (Vito) · Inventors: Weyen, Dominique; Van Tichelen, Paul
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention is related to a method and devices for controlling at least one load connected to an AC power line. The method is based on the introduction of interruptions in the line voltage which correspond to data , being sent. The method centres on interruptions of variable length yielding , the opportunity of sending more data with a reduced number of interruptions. The invention is further related to a particular design of the transmitter and receiver. The transmitter is equipped with a means for measuring the line current. The receiver is equipped with a comparator with a feedback connection. The receiver is also capable of increasing momentarily the line current, which …
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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 June 26, 2002 and granted January 3, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 26, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 26, 2024.
- 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.