Radiant energy – Invisible radiant energy responsive electric signalling – With means to inspect passive solid objects
Patent
1989-09-14
1991-06-04
Hannaher, Constantine
Radiant energy
Invisible radiant energy responsive electric signalling
With means to inspect passive solid objects
2503601, 250308, 250341, G01T 700, G01B 704, G01N 2316
Patent
active
050216660
ABSTRACT:
A pass-line independent measuring device for producing thickness related measurements (e.g., thickness, basis weight, density, etc.) of a moving web. The thickness measurements themselves are based on a nuclear source and detector mounted on one or both sides of the web, the source emitting radiation and the detector detecting emitted radiation from the web as an uncorrected measure of web thickness. An ultrasonic distance measuring means is fixedly associated with either the source, the detector, or both and continuously directs ultrasonic pulses in a direct path to the web, measures reflections in substantially a similar direct path, and by means of the time delay between a pulse and its reflection determines the actual pass-line of the web between the source and detector. The pass-line is used with a correcting function to correct the nuclear readings and provide a substantially accurate measure of web thickness corrected for pass-line. The very direct paths for both types of radiation and the rugged nature of the assembly assures reliable operation in industrial environments.
REFERENCES:
patent: 3828190 (1974-08-01), Dahlin et al.
patent: 4276480 (1981-06-01), Watson
patent: 4845730 (1989-07-01), Mercer
Sep. 1985, "Indev Web Measurement, Control and Process Management", Published by Barber-Colman Indev.
"Betamike.RTM. O-Frame Measurement Subsystem", published by Barber-Colman Indev.
Barber-Colman Company
Eisenberg Jacob M.
Hannaher Constantine
LandOfFree
Pass-line independent web measuring method and apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Pass-line independent web measuring method and apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Pass-line independent web measuring method and apparatus will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1028418