Fill sensor for paint gun
CA 2070748 A1 · Owner: Weigert, Norman Joseph · Inventors: Meuleman, Ronny; Weigert, Norman Joseph; Genereaux, Ron James
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
C-4,350, FILL SENSOR FOR PAINT GUN, Abstract of the Disclosure A fill sensor for a paint gun provides a light sensor opposite a light source in a housing surrounding a transparent portion of paint gun overflow line so that reception by the light sensor of light radiated from the light source through the transparent portion of the overflow line is blocked when the paint gun is filled and the paint enters the overflow line as, indicated by a change from a first signal to a second signal from an electric circuit including the light sensor. A preferred embodiment of the invention uses a CdSe4 photo-resistor with a large aperture which is not blocked by small objects in the transparent portion …
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 June 9, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 9, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 9, 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.