Low current fuse cartridge for circuit interrupter
CA 2452507 A1 · Owner: Warszawa, Martin A. · Inventors: Stavnes, Mark W.; Montante, Jorge R.; Borchardt, Glenn R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A fuse cartridge is provided having improved tensile strength via the provision of, a mechanical strain wire that is in parallel with a fusible element mechanically but not, electrically, thereby increasing the tensile strength of the fusible element without, altering the electrical time-current characteristics of the fusible element. In a preferred, embodiment, the stain wire is provided by looping a fusible element wire from a first, terminal around a second terminal and back near the first terminal but electrically, insulated therefrom.
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 December 9, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 9, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 9, 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.