Fused disconnect
CA 2060286 C · Owner: Happ, Lawrence · Inventors: Marach, David R.; Happ, Lawrence; Alfaro, Conrad
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A fused disconnect device constructed according to the present invention comprises a housing, a line side terminal a, load side terminal, a protection fuse holder assembly removably installed in a cavity of said housing, and a separate alarm fuse removably installed in said housing. The alarm fuse may remain installed in the housing regardless of the presence of the protection fuse holder assembly, so that an alarm will be generated whenever the inventive device has interrupted power to the load. The fuse holder assembly comprises a cavity for holding at least one spare protection fuse and one spare alarm fuse. A cover retains the spare fuses in the cavity until they are required. The cover …
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 January 29, 1992 and granted December 26, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 29, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 29, 2014.
- 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.