Rotary lock system for excavating tooth/adapter assembly
CA 2233745 A1 · Owner: Jusselin, Paul G. · Inventors: Jusselin, Paul G.; Robinson, Howard W.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An excavating tooth point is captively retained externally on an adapter nose with a specially designed lock structure removably received in a side wall opening of the tooth point and an underlying opening in the adapter nose. The rotary lock structure includes a cylindrical body having a side portion from which a resiliently biased force exerting member and a spring-loaded detent pin outwardly project. With the adapter nose received in the tooth pocket the lock structure body is axially inserted into the tooth and adapter openings in a first rotational orientation and then forcibly rotated to a second rotational orientation. The surfaces of the tooth and nose openings are configured to …
Read the whole patent
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 2, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 2, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 2, 2020.
- 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.