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Expired Canadian patentCanada

Apparatus for connecting a switch operator to a switch

CA 1138505 A · Owner: S & C Electric Company · Inventors: Rogers, Edward J.

CIPO record

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

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Abstract From the Canadian patent

A high-voltage switch is operated by a reciprocable link. The link is reciprocated by a rotatable driven member. A rotatable drive member is rotated by a switch operator. It is desired to lock the members together for conjoint rotation after each is placed in a predetermined position for example, when the, switch is closed and the operator is in the switch-closed position. The members are intended to be locked together by a fastener which passes through a hole in each member, but normal tolerances often lead to the holes being misaligned in an unpredictable manner. Accordingly an elongated slot is formed through, one member. A hole is formed through the other member. The hole is so formed …

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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 28, 1982. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 28, 1999.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledApril 1, 1980
GrantedDecember 28, 1982
Term endedDecember 28, 1999
Patent numberCA 1138505 A
Classification (IPC)H01H9/24 +1 more

Timeline

Timeline From CIPO dates

1981198319851987198919911993199519971999Application filedApril 1, 1980Patent grantedDec 28, 1982Term endedDec 28, 1999

Sources & verification

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