Lock nut and attaching removing tool for same
CA 2293794 A1 · Owner: Kioka, Hiromichi · Inventors: Kioka, Hiromichi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A lock nut characterized in that a plurality of flexible vanes are formed by forming an elastic plate material to have a concave-shape at a central cross section such that its outer peripheral side plate portion is polygonal in shape like nut and its lower, flat plate portion is divided in a circumferential direction of a central nut hole of a nut warping respective , tips of the flexible vanes toward inside of a concave-shaped cross section to provide a nut thread in which the vane tips engages a bolt for integration therewith, and forming downwardly extending portions downwardly of roots of the respective flexible vanes in a fastening direction so that contact pressures on the …
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 June 12, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 12, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 12, 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.