Remote fiber optic electrical switch
CA 2124567 A1 · Owner: Mulally, Daniel J. · Inventors: Mulally, Daniel J.; Lefevre, Donald Keith
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A remote switch (12) system for controlling electrical devices such as electrical lights, from a remote switch (12) location using a single optical fiber to communicate the controlling signal from the remote switch (12) to the device. Typically the remote, switch (12) may be added to a normal switch (12) near the device during modification or remodeling of a building automobile or the , like or installed in during original construction. The fiber (24) optic system includes both an emitter and a detector (58) at the first end of a fiber optic (24). The emitter sends a light signal through the fiber (24) and the detector (58) detects a reflected signal coming back through the fiber. …
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 December 24, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 24, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 24, 2014.
- 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.