Protection system for devices connected to an alternating current electrical power supply
CA 2308977 A1 · Owner: Legatti, Raymond H. · Inventors: Legatti, Raymond H.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A protective arrangement for an electrical device energized from an alternating current power supply which de-energizes the electrical device when undesirable conditions, develop within the electrical device. The protective arrangement, when provided for an electrical device having protection for undesirable leakage currents, in the power cord supplying to electrical device utilizes the same circuit , Interrupting device to de-energize the electrical device upon the occurrence of an undesirable condition, other, than a leakage current within the device, or upon the occurrence of an undesirable, leakage current in the power cord supplying the electrical 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
- Filed May 16, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 16, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 16, 2022.
- 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.