Measuring and testing – Gas analysis – Detector detail
Reexamination Certificate
2008-02-29
2010-11-30
Fitzgerald, John (Department: 2856)
Measuring and testing
Gas analysis
Detector detail
Reexamination Certificate
active
07841226
ABSTRACT:
The present invention provides an apparatus for the detection of volatile and semi-volatile chemicals using the olfactory abilities of honey bees that are trained to respond to the presence of a specific chemical in a sample of gas with the proboscis extension reflex (PER). In particular, the geometry and arrangement of the parts of the apparatus are such that the amount of surface area in contact with the sample of gas prior to its introduction to the bees is minimized to improve the detection of particular volatile and semi-volatile that have a tendency to “stick” to contacting surfaces, especially certain chemicals associated with explosives and narcotics. According to another aspect of the present invention, a pre-concentrating means is incorporated with the device to effectively increase the concentration of “sticky” chemicals presented to the insects.
REFERENCES:
patent: H145 (1986-10-01), James
patent: 7237504 (2007-07-01), Davis et al.
Haarmann Timothy K.
McCabe Kirsten J.
Wingo Robert M.
Devito Alex
Durkis James C.
Fitzgerald John
O'Dwyer Thomas S.
U.S. Department of Energy
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