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Expired Canadian patentCanada

Apparatus and method automatically for moving elongated objects into and out of a hot dip galvanizing kettle

CA 1065698 A · Owner: Wheatland Tube Company · Inventors: Saloom, Joseph T.

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

Apparatus and method automatically for moving elongated objects into and out of a hot dip galavanizing kettle or the like includes a screw feed conveyor system that continually maintains control over the elongated objects while feeding and removing the objects at a uniform predetermined rate. The screw feed conveyor system includes at least two generally U-shape screws which are rotated about their axes to feed elongated objects horizontally placed thereon at opposed diametrical sides thereof thought the galvanizing kettle, said screws, if desired having flights with, selectively varying pitches to tilt the objects for entry into the kettle and drag out from the kettle.

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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 6, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 6, 1996.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Filed—
GrantedNovember 6, 1979
Term endedNovember 6, 1996
Patent numberCA 1065698 A
Classification (IPC)C23C2/38 +1 more

Timeline

Timeline From CIPO dates

198019821984198619881990199219941996Patent grantedNov 6, 1979Term endedNov 6, 1996

Sources & verification

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