Method and apparatus for testing a forward-moving strand

Patent · Tue Jan 01 00:00:00 EST 1980

OSTI ID:863611

Ducommun, Joel ^[1]; Vulliens, Philippe ^[2]

---

1. Chavannes, CH
2. Palezieux-Gare, CH

In a method for testing a continuously forward-moving strand a light beam which passes along a plane that extends approximately perpendicularly to the longitudinal axis of the strand is introduced into the strand. The brightness value is measured on a place of the strand exterior which is distal from the light incidence place by means of at least one photoelectronic element disposed directly on the strand exterior and the measured result is evaluated in a gating circuit which is electrically connected to the photoelectronic element.

• Research Organization: General Atomics, San Diego, CA (United States)
• DOE Contract Number: EY-76-C-03-0167
• Assignee: Baumgartner Papiers S.A. (Crissier, CH)
• Patent Number(s): US 4212541
• OSTI ID: 863611
• Country of Publication: United States
• Language: English

Related Subjects

method
apparatus
testing
forward-moving
strand
continuously
light
beam
passes
plane
extends
approximately
perpendicularly
longitudinal
axis
introduced
brightness
value
measured
exterior
distal
incidence
means
photoelectronic
element
disposed
directly
result
evaluated
gating
circuit
electrically
connected
light beam
longitudinal axis
electrically connected
approximately perpendicular
element disposed
light incidence
forward-moving strand
/356/250/