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Expired Canadian patentCanada

Round bale conveyors and twine protectors therefore

CA 1308052 C · Owner: Greenbelt Farm Systems Inc. · Inventors: Rempel, Henry; Rempel, William

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

Conventionally, round bales bound with twine are conveyed by a pair of chain type conveyors running in U-shaped channels and the roller chain side plates of the conveyor chains rub and abrade the twine leading to breakage of the twine and possible dissolution of the bale. Shown are two embodiments to prevent this. Firstly a round sectioned rod may be welded to the outer edge of the inner side plates of the channels against which the bale slides and secondly, the preferred embodiment shows a die cast channel having at least the inner side plate flaring outwardly and over to present a relatively smooth rounded surface to the bale surface and twine sliding thereover. Both embodiments raise the …

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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 29, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 29, 2009.
  • 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 21, 1989
GrantedSeptember 29, 1992
Term endedSeptember 29, 2009
Patent numberCA 1308052 C
Classification (IPC)B65G19/22 +2 more

Timeline

Timeline From CIPO dates

1990199219941996199820002002200420062008Application filedMarch 21, 1989Patent grantedSep 29, 1992Term endedSep 29, 2009

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