Power conversion unit and method of providing power to a window covering
CA 2443544 A1 · Owner: Hunter Douglas Industries B.V. · Inventors: Osinga, Anne J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A power conversion unit and a method of providing power to a powered movable window covering using a conversion circuitry with a transformer to obtain relatively, low voltage supply from main supply the method including (a) providing in the conversion circuitry a snubber circuit for the transformer the snubber , circuit, absorbing power from the transformer and supplying power absorbed from the transformer back to the conversion circuitry such that heat generation from the, conversion circuitry with the transformer is minimised and (b) mounting the conversion circuitry in the headrail of the window covering so as to reduce the, overall size of the window covering.
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 September 30, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended September 30, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 30, 2025.
- 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.