Optics: measuring and testing – By particle light scattering – With photocell detection
Reexamination Certificate
2009-02-03
2010-11-09
Punnoose, Roy (Department: 2886)
Optics: measuring and testing
By particle light scattering
With photocell detection
C356S339000
Reexamination Certificate
active
07830510
ABSTRACT:
The present disclosure has an apparatus for detecting fibers in a gas flowing along a passageway. A laser beam is provided at one end of the passageway and the beam is directed along a length of the passageway through which the gas flows. An electrode system, as disclosed, a quadrupole electrode system is mounted along the passageway to cause fibers carried in the gas to oscillate in a detection zone. A photo detector is positioned laterally of the passageway and detects light scattered by the oscillating fibers and projected through an opening in the passageway to provide an output signal that is a function of the light scattered by the fibers in the detection zone.
REFERENCES:
patent: 3692412 (1972-09-01), Chubb
patent: 4940327 (1990-07-01), Lilienfeld
patent: 5319575 (1994-06-01), Lilienfeld
patent: 6005662 (1999-12-01), Ence
patent: 6512583 (2003-01-01), Ence
Battista Mark J.
Dick William D.
Lilienfeld Pedro
Liu Benjamin Y. H.
Romay Francisco J.
MSP Corporation
Punnoose Roy
Westman Champlin & Kelly P.A.
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