Overcurrent trip unit with indication of dependency of trip functions
CA 2128132 C · Owner: Eaton Corporation · Inventors: Matsko, Joseph Jacob; Saletta, Gary Francis
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A graphical representation (45) of the current/time trip characteristic displayed on the operator's panel (43) of an electronic trip unit for a circuit interrupter has different indicia (83, 85), such as different colors identifying the representation (73) of independent trip functions from those (79 81) of dependent trip functions, thereby making the operator aware that adjustment of one of the dependent trip functions will also affect and adjustment of the other dependent portions of the current/time trip characteristic.
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 July 15, 1994 and granted September 18, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 15, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 15, 2016.
- 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.