Apparatus for releasably coupling an attachment to an excavator
CA 2370307 A1 · Owner: Mclellan, Robin S. · Inventors: Mclellan, Robin S.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A quick, reliable and safe coupling device that is not mechanically complex is required for excavation equipment and more particularly for coupling an, attachment to a mounting bracket on an operating arm of an excavating machine. The present invention addresses the above needs by providing a, wedge member movable between a locked position and a released position; an extendable actuator that is movable between a collapsed position and an extended position to move the wedge member between the locked and released positions, respectively; and at least one guide member cooperating with the wedge member to guide movement of the wedge member between the locked and released positions. The wedge …
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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
- Filed February 4, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended February 4, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 4, 2024.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.