Operating device for at least one electric lamp with a control input, and an operating method for electric lamps connected to such an operating device
CA 2360200 A1 · Owner: Huber, Andreas · Inventors: Huber, Andreas
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to an operating method and an operating device for at least one electric lamp (11), which device has a control input (13 14) for, prescribing a setpoint for the brightness control of the lamp (11), and a transformer (15) for transmitting the voltage impressed on the control input (13 14) to, an evaluation device (16) which serves to evaluate the voltage impressed on the control input (13 14). According to the invention, the evaluation device (16) comprises a sample-and-hold element (22) and means (19 21, 24) are provided for matching the frequency of the sequence signal of the sample-and-hold element (22) to the frequency of a periodically varying voltage which excites …
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 October 26, 2001. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 26, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 26, 2023.
- 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.