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Expired Canadian patentCanada

Coupling device for a power transmission shaft

CA 1048804 A · Owner: Jean Walterscheid G.M.B.H. · Inventors: Von Allworden, Wilhelm

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

Abstract of the Disclosure, A coupling device for making a driving connection between a power take-off shaft and a transmission shaft has a coupling hub mounted upon the power take-off shaft and a coupling drum which co-axially surrounds the coupling hub may be journalled upon the hub or attached to the tractor. A coupling sleeve on a power transmission shaft is detachably connected to the coupling hub by a quick release fastener means. The outer surface of the coupling drum has a pivot support upon which an actuating member is pivotally supported. The actuating member has one arm connected to the coupling sleeve and the other arm defines an operating lever such that pivoting of 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 February 20, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 20, 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—
GrantedFebruary 20, 1979
Term endedFebruary 20, 1996
Patent numberCA 1048804 A
Classification (IPC)F16D1/11 +1 more

Timeline

Timeline From CIPO dates

198019821984198619881990199219941996Patent grantedFeb 20, 1979Term endedFeb 20, 1996

Sources & verification

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