Operation-indicator device for fuse cartridges for electrical protection
CA 1292029 C · Owner: "Ferraz" A French Societe Anonyme · Inventors: Bonhomme, Christian
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This invention relates to an operation-indicating device for fuse cartridges for electrical protection, of the type comprising a plunger formed by a pusher element which is retained against elastic actuating means by a secondary fuse wire connected in parallel with the wire or wires or fusible elements of the cartridge, characterized in that it comprises at the level of the base of the plunger which cooperates with the conventional portion of reduced section of the secondary wire, an intermediate piece which is in contact with said wire on either side of said portion and which is arranged so as to behave on, the one hand, in non-conductive manner with respect to the low-voltage current …
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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
- Granted November 12, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 12, 2008.
- 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.