Circuit breaker with latch and toggle mechanism operating in perpendicular planes
CA 2336766 A1 · Owner: Mccormick, James · Inventors: Mccormick, James; Wellner, Edward Louis; Walz, Michael Frederick
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The toggle mechanism of a circuit breaker is connected at one end to the pivoted, contact arm and at the other end to a pivoted latch lever which is engaged to latch the toggle, mechanism by a latch member pivoted for movement in a plane perpendicular to the plane of, the toggle mechanism. The latch member serves as an armature for a trip motor energized by, a trip circuit responsive to an arc fault and/or a ground fault to unlatch the toggle mechanism, and trip the circuit breaker open. The latch member is also tripped by a helical bimetal, responsive to persistent overcurrents and coupled to the latch member through an ambient, compensator bimetal cantilevered from the latch …
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 14, 2001. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended February 14, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 14, 2023.
- 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.