Lens mounting arrangement for eyeglasses, and method of mounting eyeglass lens
CA 2430768 A1 · Owner: Tura Lp · Inventors: Nishihara, Iwao
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A lens mounting arrangement for eyeglasses includes an eyeglass frame component, an externally threaded stud projecting from the component, an eyeglass lens having a hole large enough to loosely accommodate the stud, and a plastic nut cooperable with the stud for securing the lens to the frame component. The nut has an axial bore including a side wall which is initially smooth and unthreaded. The diameter of the bore is such that as the nut is turned on to the stud, the threads of the stud produce a corresponding internal thread in the side wall of the bore. As a result, the interengagement of the threads of the stud and nut secure the lens to the frame component. The nut comprises a …
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 May 30, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 30, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 30, 2025.
- 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.