A push button circuit breaker switch
CA 2297947 A1 · Owner: Yu, Tsung-Mou · Inventors: Yu, Tsung-Mou
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A circuit breaker switch essentially comprising a push button switch an alloy metal having one end connected to a contact of a circuit of the switch and the other end being mounted to the circuit of the switch. If the current to the switch does not exceed a predetermined current value the, switch functions as a normal switch. That is the original position of the, switch is in the "OFF" position and a depression to the push button changes its position to the "ON" state. A further depression of the push button restores the push button to the "OFF" state. When the current passed to the switch exceeds the predetermined current valve the alloy metal is thermally, deformed and curved upward which …
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 February 2, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended February 2, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 2, 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.