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Expired Canadian patentCanada

Round baler apron tensioning system

CA 1261200 A · Owner: New Holland Inc. · Inventors: Jennings, Richard E.

CIPO record

Overview

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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 system for tensioning the bale forming apron of a round baler includes first and second pairs of drive sprockets for moving the apron. The first pair of drive sprockets are driven at a first speed, and the second pair of drive sprockets are driven at a second speed which is slightly slower than the first speed. This differential in sprocket speeds tensions the inner course of the apron extending between the first and second pairs of drive sprockets. The system also includes a slip clutch assembly for temporarily disengaging the second pair of drive sprockets from being driven at the second speed whenever the differential between the first and second speeds reaches a preset limit.

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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 September 26, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 26, 2006.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMarch 26, 1987
GrantedSeptember 26, 1989
Term endedSeptember 26, 2006
Patent numberCA 1261200 A
Classification (IPC)A01F15/00 +1 more

Timeline

Timeline From CIPO dates

1988199019921994199619982000200220042006Application filedMarch 26, 1987Patent grantedSep 26, 1989Term endedSep 26, 2006

Sources & verification

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