Appeal No. 95-1908
Application 07/890,620
Claims 1 and 18 are representative and are reproduced
below:
1. A device discrete from and usable with protective
clothing or equipment worn by a user for detecting the
breakthrough of the protective clothing or equipment by a
contaminant, said device comprising: a reaction pad having
obverse and reverse sides, reagent means carried by said
reaction pad and responsive to the presence of the contaminant
for producing a visible indication, a barrier layer impervious
to said reagent means covering said reverse side of said
reaction pad, and attachment means coupled to said reaction
pad for removably mounting it between the user and the
protective clothing or equipment being tested so that in use
said obverse side is adjacent to the inside of the protective
clothing or equipment for exposure to a contaminant which
breaks through the protective clothing or equipment.
18. A method for detecting the breakthrough by a
contaminant of protective clothing or equipment worn by a
user, said method comprising the steps of: providing a pad
having obverse and reverse sides and carrying a reagent
responsive to the presence of the contaminant for producing a
visible indication, sealing the reverse side of the pad to
prevent escape of chemicals therefrom, and removably mounting
the pad between the user and the protective clothing or
equipment being tested so that the obverse side is adjacent to
the inside of the protective clothing or equipment for
exposure to a contaminant which breaks through the protective
clothing or equipment.
The reference of record relied upon by the examiner is:
Cukier 4,910,803 Mar. 27, 1990
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