High-precision adjustable injection molding of single-mode fiber optic connectors
CA 2022245 A1 · Owner: Bell Communications Research, Inc. · Inventors: Briggs, Paul R. Jr.; Varachi, John P. Jr.; Kiss, Gabor D.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
of the Invention, An injection-molded connector for single-mode optical fibers includes two mating plugs having aligned fiber-receiving holes. To keep transmission losses in the connector at an acceptable level, the eccentricity of each hole relative to its-plug profile must be maintained within a fraction of a micron. In accordance with the invention, the mold utilized to form the plugs includes a dual-eccentriccam adjustment mechanism that comprises nested conically shaped cams Rotation of the cams serves to move a part of the mold that positions a hole-forming pin. By means of this mechanism the eccentricity of the, fiber hole relative to the profile of the molded plug can be established …
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 July 30, 1990. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 30, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 30, 2012.
- 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.