Method for detecting localized defects present in a mineral...

Details Method for detecting localized defects present in a mineral... Method for detecting localized defects present in a mineral...

2011-08-23

2011-08-23

Porta, David (Department: 2884)

Radiant energy

Invisible radiant energy responsive electric signalling

With means to inspect passive solid objects

C324S639000

Reexamination Certificate

active

08003946

ABSTRACT:
The invention concerns a method for detecting localized defects, such as hot spots or wet spots, present in a mat of mineral fibers bonded by a binder, including using a microwave radiation of frequency ranging between 1 and 50 GHz, preferably between 5 and 10 GHz, the total power of the emitted electromagnetic wave ranging between 0.1 and 5 watts, preferably of the order of 1 watt. The invention also concerns a device for implementing said method as well as an installation for continuously making mineral fiber mats containing said device.

REFERENCES:
patent: 4203155 (1980-05-01), Garst
patent: 5625293 (1997-04-01), Marrelli et al.
patent: 2006/0019024 (2006-01-01), Freeman et al.
patent: 100 53 112 (2002-05-01), None
patent: 2 300 483 (1996-11-01), None
patent: 2006 023137 (2006-03-01), None

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