Securing device for knock-on earthworking tool
CA 2504073 C · Owner: Ralph Mckay Industries Inc. · Inventors: Yanko, Glen A.; Chychrun, Dwayne A.; Reinkens, Uwe F.W.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A retainer is disclosed for preventing accidental release of a knock-on earthworking tool from the tine of an agricultural implement. The retainer comprises a tapered adaptor to be secured to the agricultural implement and which is complementary with the hollow stem of the earthworking tool and further comprises a resilient spring element secured to the upper surface of the adaptor inside a longitudinal depression. The .spring element is integrally formed from a single piece of metal comprises an anchoring portion which is secured within the longitudinal depression in the adaptor which and a tail portion which catches in an aperture in the stem of the earthworking tool when the stem is …
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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 April 13, 2005 and granted January 10, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 13, 2025.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
- 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.