Optical sensor for detecting quantity of protective coating
CA 2032496 A1 · Owner: Weniger, Richard J. · Inventors: Bartlett, Glynn R.; Weniger, Richard J.; Franke, Ernest
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An optical sensor which can be used in conjunction with an automatic stripping apparatus (10). A plurality of sensing elements are placed in a predetermined geometrical relationship with respect to a plurality of nozzles which deliver paint stripping material. Each of the sensing elements comprises a lens system which optimizes inspection of the desired field of view while minimizing the effects of light from outside the desired field of view. The sensing elements produce optical signals which are converted into electrical signals (22) by a plurality of optical detectors (18). The signal output of the plurality of detectors is analyzed using a programmable digital computer (24) which is …
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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 9, 1990. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 9, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 9, 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.