Drawout switchgear with levering-in mechanism
CA 1079334 A · Owner: Westinghouse Electric Corporation · Inventors: Salemi, Nicholas A.; Rexroad, James O.; Schweinebraten, Raymond H.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A drawout switchgear characterized by a circuit interrupter unit movable into and out of a cell between disconnected and connected positions of stationary primary terminal means supported in the cell and on said unit retractable second contact means engageable at an intermediate position between the disconnected and connected positions, and a levering-in mechanism for moving said unit between disconnected, intermediate, and connected positions of said terminal and contact means, the levering-in mechanism comprising a cam having a slot of two segments one of which has a higher mechanical advantage and the other for moving the unit into the connected position.
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
- Granted June 10, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 10, 1997.
- 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.