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Expired Canadian patentCanada

Bus-to-plug interlock

CA 1311540 C · Owner: Square D Company · Inventors: Wittmer, Daniel L.

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

OX-30, Abstract Of The Disclosure, A plug-in apparatus for use with an electrical busway containing a plurality of bus bars includes an enclosure with an electrical accessory disposed therein. A plurality of plug-in jaws are connected to the electrical accessory and extend through a rear wall of the enclosure for engaging the bus bars. An operating handle is mounted outside of the enclosure. An interlock assembly includes an elongated interlock arm movably connected to the enclosure and extending in a generally horizontal direction across a plane of the rear wall of the enclosure. The interlock arm is movable relative to the enclosure between an unlocked position and a locked position. A …

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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 December 15, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 15, 2009.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledSeptember 21, 1989
GrantedDecember 15, 1992
Term endedDecember 15, 2009
Patent numberCA 1311540 C
Classification (IPC)H01R13/63 +2 more

Timeline

Timeline From CIPO dates

1990199219941996199820002002200420062008Application filedSep 21, 1989Patent grantedDec 15, 1992Term endedDec 15, 2009

Sources & verification

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