Measurement of variation in flute profile height

Details Measurement of variation in flute profile height Measurement of variation in flute profile height

1987-08-10

1989-01-24

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

250227, G01N 2186

Patent

active

048002860

ABSTRACT:
Method and apparatus for determining the variation in the height of flute profile for corrugated material is obtained by passing the corrugated material in a predetermined space relationship across a beam of light projected toward the corrugated material in a direction substantially perpendicular to the flute tips and the bases of the valleys of the corrugated material and collecting the light reflected back directly from the material, i.e. in a direction substantially parallel to the light beam, determining the amount of light reflected back from each flute tip of the corrugated material to provide an indication of flute height.

REFERENCES:
patent: 4254331 (1981-03-01), Dorman et al.
patent: 4547668 (1985-10-01), Tsikos
patent: 4550377 (1985-10-01), Craemer
patent: 4572949 (1986-02-01), Bowers
patent: 4599711 (1986-07-01), Cuomo
patent: 4617460 (1986-10-01), Tokunaga et al.
patent: 4652744 (1987-03-01), Bowers
patent: 4701610 (1987-10-01), Hoogenboom
patent: 4701611 (1987-10-01), Kissinger
E. Schoene et al., "French Development Provides Continuous High/Low Measurement", Oct. 1983, pp. 35-46.

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