Locking nut for a threaded shaft
CA 2091695 A1 · Owner: Gordon, Jerry H. · Inventors: Gordon, Jerry H.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A locking nut for a bicycle axle includes a cylindrical nut having a threaded bore and an end having a recessed portion, a casing rotatably receiving the nut, and a key having an offset protruding portion matched to the recessed portion. The casing extends beyond the nut. Upon rotation of the key when the key is mated to the nut the nut is, rotated. The key is prevented from rotating about the protruding portion by the extension of the casing.
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 March 15, 1993. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 15, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 15, 2015.
- 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.