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Expired Canadian patentCanada

Conical guide for a coupling pin on an agricultural implement

CA 1049830 A · Owner: Jean Walterscheid G.M.B.H. · Inventors: Kunze, Dieter; Von Allworden, Wilhelm

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

Abstract of the Disclosure A conical guide for mounting on a coupling pin of an implement or the like which can be coupled to a three-point connection of a tractor may comprise a semi-conical member or a complete conical member divided to form two semi-conical members. The single semi-conical member is positioned about the coupling pin and has a clamp also positioned about the coupling pin so that the clamp and semi-conical member completely enclose the pin and are secured against axial displacement on the coupling pin by radially inwardly directed projections received within a notch in the pin. With a full conical member one of the semi-conical guide members functions as a clamp. -1-

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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 March 6, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 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—
GrantedMarch 6, 1979
Term endedMarch 6, 1996
Patent numberCA 1049830 A
Classification (IPC)B60D1/00

Timeline

Timeline From CIPO dates

198019821984198619881990199219941996Patent grantedMarch 6, 1979Term endedMarch 6, 1996

Sources & verification

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