Expulsion type current limiting fuse device
CA 1052425 A · Owner: S And C Electric Company · Inventors: Harner, Robert H.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A current-limiting device is joined in series with an expulsion fuse to provide current interruption for a full range of fault currents. The expulsion fuse portion is joined to the current-limiting device in such a way as to reduce the overall length of the combination by allowing the operative elements of the expulsion fuse portion to move into the currentlimiting fuse portion upon operation of the expulsion fuse portion. Also in those instances where it is desirable to use an exhaust control device in conjunction with the expulsion fuse portion the exhaust control device can be positioned within the currentlimiting device to reduce the overall length of the device.
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
- Granted April 10, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 10, 1996.
- 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.