Multiple ring guide for payout testing of optical fibers
CA 2026022 C · Owner: Stubbs, Scott F. · Inventors: Stubbs, Scott F.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A fiber optic canister (14) is tested by drawing an optical fiber (12) from a generally cylindrical bobbin (16) upon which it is wound in a, direction parallel to the longitudinal axis (18) of the bobbin (16). The optical fiber (12) is directed toward the drawing location (30) of the payout drive (20), and transverse vibrations in the optical fiber (12) are damped, by a guide (40) formed as a series of spaced-apart guide rings (42) having their centers aligned along a common axis (50) that is preferably coincident with the axis (18) of the bobbin (16). The guide rings (42) have central apertures (44) that decrease in diameter from the guide rings (42) nearest the canister (14) toward 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 September 24, 1990 and granted November 15, 1994. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 24, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 24, 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.