Multi-pole circuit breaker with multiple trip bars
CA 2316073 A1 · Owner: Eaton Corporation · Inventors: Sumpman, Wayne C.; Mueller, Robert W.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This concerns a four pole molded case circuit breaker having separable main contacts and an operating mechanism utilized to cause the separable main contacts to open and close. A trip unit is provided to actuate the operating mechanism in desirable circumstances. The circuit breaker in this case has four-poles, one of which is a neutral pole. The circuit breaker trip unit has rotatable trip bars therein one of which is associated, with the three-line terminals and one of which is associated with the neutral terminal. If the line terminal trip bar is actuated to move because of a fault to, overload in one of the line terminals only the line terminals will open, because the neutral trip bar …
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 August 16, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended August 16, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 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.