Radiant energy – Photocells; circuits and apparatus – Optical or pre-photocell system
Patent
1984-05-24
1986-10-07
Nelms, David C.
Radiant energy
Photocells; circuits and apparatus
Optical or pre-photocell system
131905, 209536, G01N 2188, B07C 500
Patent
active
046161392
ABSTRACT:
A portion of the path for a moving cigarette or filter rod in a cigarette rod making or filter rod making machine is surrounded by a ring-shaped carrier for a polygonal light-transmitting rod guide and a set of radiation conducting units, one behind each facet of the guide. Each unit receives a beam of radiation from a discrete source and directs such radiation radially of and at right angles to the axis of the moving rod. Radiation which is reflected by the exterior of the rod is caused to pass through the respective unit and is directed against a discrete photoelectric transducer which generates signals denoting the characteristics of reflected radiation. Such signals are used to evaluate the condition of the exterior of the rod and, if necessary, for segregation of corresponding (defective) plain cigarettes or filter rod sections from satisfactory cigarettes or filter rod sections.
REFERENCES:
patent: 3914989 (1975-10-01), Reuland et al.
patent: 4037608 (1977-07-01), Wahle
patent: 4208578 (1980-06-01), McLoughlin et al.
patent: 4215939 (1980-08-01), Miller et al.
patent: 4350170 (1982-09-01), Baier
patent: 4377743 (1983-03-01), Bolt et al.
Hauni-Werke Korber & Co. KG.
Kontler Peter K.
Messinger Michael
Nelms David C.
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