Radiant energy – Photocells; circuits and apparatus – Optical or pre-photocell system
Patent
1991-06-25
1992-11-17
Nelms, David C.
Radiant energy
Photocells; circuits and apparatus
Optical or pre-photocell system
2502221, G01N 1506, G01N 2149, G01N 2185
Patent
active
051646072
ABSTRACT:
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 snesor. A preferred embodiment of the invention uses a CdSe.sub.4 photo-resistor with a large aperture which is not blocked by small objects in the transparent portion of the overflow line and has a comparatively slow response for inherent signal low pass filtering. The electric circuit is adapted to operate through an intrinsically safe barrier for use in a manufacturing environment.
REFERENCES:
patent: 3908441 (1975-09-01), Virloget
patent: 4106671 (1978-08-01), Sharples
patent: 4223231 (1980-09-01), Sugiyama
patent: 4299495 (1981-11-01), Sawakata et al.
patent: 4396911 (1983-08-01), Motsinger et al.
Genereaux Ron J.
Meuleman Ronny
Weigert Norman J.
Allen S.
General Motors of Canada Limited
Nelms David C.
Sigler Robert M.
LandOfFree
Fill sensor for paint gun used in an electrically isolated area does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Fill sensor for paint gun used in an electrically isolated area, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Fill sensor for paint gun used in an electrically isolated area will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1173812