Classifying – separating – and assorting solids – Sorting special items – and certain methods and apparatus for... – Condition responsive means controls separating means
Patent
1996-02-29
1997-09-23
Milef, Boris
Classifying, separating, and assorting solids
Sorting special items, and certain methods and apparatus for...
Condition responsive means controls separating means
209582, 209587, B07C 500
Patent
active
056695101
ABSTRACT:
A method of selecting low-pressure mercury discharge lamps comprising a luminescent layer, the luminescent layer being excited and the low-pressure mercury discharge lamps being selected in dependence on the emission spectrum of the visible light emitted by the luminescent layer. The luminescent layer is excited by a light source arranged outside the low-pressure mercury discharge lamp and which generates ultraviolet radiation having a wavelength above 300 nm. This makes it possible to use the presence of a blue-luminescent substance in the luminescent layer as a selection criterion for both leaky and intact low-pressure mercury discharge lamps.
REFERENCES:
patent: 3305089 (1967-02-01), Fraenker
patent: 3650400 (1972-03-01), Warren
patent: 4435284 (1984-03-01), Heytmeijer
patent: 4759630 (1988-07-01), Yuasa et al.
patent: 5190163 (1993-03-01), Anzai et al.
De Hair Johannes T. W.
Kastelein Lukas
Lauwerijssen Petrus C.
Verhaar Henricus C. G.
Egbert, III Walter M.
Milef Boris
U.S. Phillips Corporation
Wieghaus Brian J.
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