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Expired Canadian patentCanada

Armature rails and rail carrying arrangement for attraction type magnetically floated travelling body

CA 1090436 A · Owner: Japan Airlines Co. Ltd. · Inventors: Mihirogi, Kiyoshi; Nakamura, Shinji

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 structural arrangement for carrying armature rails of an attraction type magnetically floated travelling body comprising a plurality of carrying blocks which are fixed to bases and are arranged with spacing in the longitudinal direction of rails; and an armature rail which is carried along the side of the bases by the carrying blocks, said armature rail being provided with a groove and a flange formed on one side thereof confronting the carrying block, each carrying block being provided with a groove which engages with the tip of the flange of the armature rail and with an extruding arm which engages with the groove provided in the armature rail, the structural arrangement further …

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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 November 25, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 25, 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.
FiledApril 7, 1977
GrantedNovember 25, 1980
Term endedNovember 25, 1997
Patent numberCA 1090436 A
Classification (IPC)B61B13/08 +2 more

Timeline

Timeline From CIPO dates

1978198019821984198619881990199219941996Application filedApril 7, 1977Patent grantedNov 25, 1980Term endedNov 25, 1997

Sources & verification

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