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Expired Canadian patentCanada

Power switch assembly

CA 1237755 A · Owner: Mitsubishi Denki Kabushiki Kaisha · Inventors: Saito, Toru

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

A power switch assembly has a horizontal supporting base, a circuit disconnector including a first supporting porcelain insulator vertically disposed on the supporting base, a stationary contractor supported by the free end of the first insulator, and a rod-shaped movable contractor separably engaged by the stationary contactor and pivotally secured to an operating mechanism located within a hollow terminal disposed at the free end of a second supporting porcelain insulator vertically disposed on the supporting base, and a circuit breaker disposed on the hollow terminal to be tilted to be remote from the movable contactor while, two driving rods extend through the second insulator and are …

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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

  • Granted June 7, 1988. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 7, 2005.
  • 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 15, 1983
GrantedJune 7, 1988
Term endedJune 7, 2005
Patent numberCA 1237755 A
Classification (IPC)H02B5/00 +2 more

Sources & verification

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