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Expired Canadian patentCanada

Automatic miniature circuit breaker with z-axis assemblable trip mechanism

CA 2111959 C · Owner: Turner, Duane L. · Inventors: Edds, Thomas A.; Brune, Rodney J.; Winter, John M.

CIPO record

Overview

Drawings and full text

Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

An improved miniature circuit, breaker (1 2) is adapted to, improved automatic assembly of all components thereof. Key, components of the breaker are individually and collectively designed to be susceptible to total Z-axis, assembly. In particular the trip mechanism (6) including the trip, lever (31) and the associated, activation means (75) tension means, (43) and reset means (35) are defined by elements designed to, interact in a Z-axis assemblable fashion. The trip mechanism components (6) are also designed for, improved trip action and enhanced breaker performance in, repeated CLOSED and TRIP operations.

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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 December 11, 1992 and granted June 15, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 11, 2012.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 11, 2014.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledDecember 11, 1992
GrantedJune 15, 1999
Term endedDecember 11, 2012
Patent numberCA 2111959 C
Classification (IPC)H01H77/00 +2 more

Timeline

Timeline From CIPO dates

1993199519971999200120032005200720092011Application filedDec 11, 1992Patent grantedJune 15, 1999Term endedDec 11, 2012

Sources & verification

Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.