Radiant energy – Photocells; circuits and apparatus – Optical or pre-photocell system
Patent
1982-08-19
1986-02-18
Nelms, David C.
Radiant energy
Photocells; circuits and apparatus
Optical or pre-photocell system
131284, 493 40, 493 4, 493 37, A24C 142, F16H 912
Patent
active
045714975
ABSTRACT:
Disclosed is a method of continuously determining the perimeter of an elongated object of generally uniform cross section which comprises wrapping the object with a sheet of flexible material having a pair of detectable parallel lines formed thereon, such that the lines extend axially parallel to the object, placing detection means in position to detect the lines, the detection means being capable of determining the distance between the lines, moving the object and the detection means relative to each other in a manner such that continuous detection of the lines and measurement of the distance therebetween occurs, and correlating the measured distance between the lines to the perimeter of said object.
REFERENCES:
patent: 3812349 (1974-05-01), Gugliotta et al.
patent: 4170003 (1979-10-01), Danielsson et al.
patent: 4291712 (1981-09-01), Koster et al.
patent: 4486186 (1984-12-01), Grumer
Henry James W.
Mumpower Robert C.
Brophy J. Jon
Eastman Kodak Company
Nelms David C.
Reece III Daniel B.
Stevens John F.
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