Group operated circuit disconnect apparatus for overhead electric power lines
CA 2136924 C · Owner: Bridges Electric, Inc. · Inventors: Bridges, Ronald P.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A group operated switching apparatus for overhead electric power lines has a box-like elongated housing which mounts on a pole and supports threedisconnect switches. Three operating shafts are journalled on the housing and are operatively connected to the disconnect switches so that axial rotation of the operating shafts alternately opens and closes the disconnect switches. An upright control shaft extends through the housing. A transverse rod assembly is enclosedwithin the housing and defines a mechanical connection between the control shaftand the operating shafts so that axial rotation of the control shaft causes axial rotation of the operating shafts. Each disconnect switch includes a …
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 November 29, 1994 and granted December 29, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 29, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 29, 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.