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Expired Canadian patentCanada

Transfer of electrolytic starting sheets from horizontal to vertical position by guide rails

CA 1111802 A · Owner: Wennberg (C J) Ab · Inventors: Norberg, Gustav S.I.; Segerstrom, Kjell E.L.

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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 method and a machine for continuously transferring starting sheets for the electrolytic refining of metals particularly copper, from, the horizontal into the vertical position for introduction into a stand in which the starting sheets are stored for subsequent suspension at equal intervals in the electrolytic refining baths. The sheets are taken up by cathode bars attached thereto and are advanced continuously at a substantially uniform speed along a path of movement which changes continuously from the horizontal to the vertical. The sheets are successively raised over the transition in the path of movement from the horizontal to the vertical. Moveable supports in the form of rollers …

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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 3, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 3, 1998.
  • 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 22, 1977
GrantedNovember 3, 1981
Term endedNovember 3, 1998
Patent numberCA 1111802 A
Classification (IPC)C25C1/00 +2 more

Timeline

Timeline From CIPO dates

1978198119841987199019931996Application filedSep 22, 1977Patent grantedNov 3, 1981Term endedNov 3, 1998

Sources & verification

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