Apparatus for operating respective single lamps among multiple lamps coupled to the same ballast
CA 2393815 A1 · Owner: Flory, Isaac L. Iv · Inventors: Flory, Isaac L. Iv
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An apparatus and method are provided for operating one of a plurality of lamps employed within a luminaire via a single ballast thereby extending the , operational, life of the luminaire. The operating lamp disables the lamps downstream from itself by, preventing current from conducting through lamps other than the operating lamp. The, lamps upstream from the operating lamp typically lack a sufficient voltage for ignition, and operation. However, if any of the upstream lamps begin to operate the , lamps, operating downstream cease to operate. In the event that two lamps begin to operate in, an asymmetric manner, a capacitor is preferably provided to maintain a reverse voltage, with …
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 July 16, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 16, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 16, 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.