Classifying – separating – and assorting solids – Sorting special items – and certain methods and apparatus for... – Condition responsive means controls separating means
Patent
1982-10-07
1984-10-16
Reeves, Robert B.
Classifying, separating, and assorting solids
Sorting special items, and certain methods and apparatus for...
Condition responsive means controls separating means
250226, 356406, 356425, B07C 5342
Patent
active
044769822
ABSTRACT:
Method and apparatus for grading articles, particularly lemons, according to their surface color. The apparatus measures each lemon's reflectance in infrared, red and green wavelength bands, and computes the ratio of the red and infrared measurements and the ratio of the red and green measurements. If the red/infrared ratio is less than a prescribed crossover threshold, the apparatus compares the red/infrared ratio to a first set of thresholds, to grade the lemon into either a very dark green, dark green or light green color grade. Conversely, if the red/infrared color ratio is greater than the crossover threshold, the apparatus compares the red/green ratio to a second set of thresholds, to grade the lemon into either a silver, tree-ripe or bronzy color grade.
REFERENCES:
patent: Re29031 (1976-11-01), Irving et al.
patent: 2881919 (1959-04-01), Bartlett
patent: 2933613 (1960-04-01), Powers
patent: 3206022 (1965-09-01), Roberts, Jr. et al.
patent: 3867039 (1975-02-01), Nelson
patent: 4095696 (1978-06-01), Sherwood
patent: 4105123 (1978-08-01), Irving et al.
patent: 4203522 (1980-05-01), Fraenkel et al.
patent: 4205752 (1980-06-01), Malvick et al.
Conway Tim D.
Krage William G.
Paddock Paul F.
Reeves Robert B.
Sunkist Growers Inc.
Wacyra Edward M.
LandOfFree
Method and apparatus for grading articles according to their sur does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and apparatus for grading articles according to their sur, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for grading articles according to their sur will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1942622