Apparatus intended for classifying the quantity of a fatty produ

Details Apparatus intended for classifying the quantity of a fatty produ Apparatus intended for classifying the quantity of a fatty produ

1981-04-08

1983-07-12

Apley, Richard J.

Surgery

Truss

Pad

128664, A61B 500

Patent

active

043924980

ABSTRACT:
Measurements of the greasiness of skin are made by applying a plate against a region of skin to be studied and then inserting the plate in a recess of the casing, in register with a photodiode and a phototransistor. A series of n (in this case 5) indicator lamps is connected to a set of n-1 (in this case 4) comparators each comparing a respective voltage threshold level with the voltage delivered by the photoresistor, so that the voltage of the transistor, and hence the greasiness of the deposit on the plate through which luminous flux from the photodiode to the phototransistor passes by reflection from the upper side of the plate, can be determined by observing which lamps are illuminated.

REFERENCES:
patent: 3927317 (1975-12-01), Liedholz
patent: 3927571 (1975-12-01), Athey
patent: 3995959 (1976-12-01), Shaber
patent: 4027981 (1977-06-01), Steinbatz
patent: 4333016 (1982-06-01), Bilstad et al.

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