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Expired Canadian patentCanada

Quick release hydraulic hitch for construction equipment and excavators

CA 1329627 C · Owner: Essex, Stuart Alexander · Inventors: Essex, Stuart Alexander; Essex, Wendy Pamela

CIPO record

Overview

Drawings and full text

Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

A hitch assembly for mounting onto the articulated arm of a hydraulic excavator, backhoe or the like comprising remotely operable means (14) for releasibly grasping the hinge pins (15, 16) of a bucket, rock hammer or other device whereby such implements can be quickly and easily interchanged without removal of said pins.

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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 May 17, 1994. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 17, 2011.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJune 7, 1988
GrantedMay 17, 1994
Term endedMay 17, 2011
Patent numberCA 1329627 C
Classification (IPC)E02F3/96 +1 more

Timeline

Timeline From CIPO dates

19891992199519982001200420072010Application filedJune 7, 1988Patent grantedMay 17, 1994Term endedMay 17, 2011

Sources & verification

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