Appeal No. 1999-0615
Application No. 08/786,974
that a single bottle of compressed gas, which is normally air,
will be sufficient to pump several tanks of water, "or some
other fire extinguishing liquid." The gas pressure-operated
pumps of the various embodiments in Good are described (col.
2, lines 49-54) as having the common feature of being able to
"produce a high pressure stream of water or other
extinguishing liquid from the nozzle of the hand-held gun,
without requiring the fireman to exert himself and become
fatigued" (emphasis added). As recognized by the examiner
(answer, page 4), nothing in the Good patent discloses or
suggests an apparatus and method for generating fire
suppressant foam and consequently this patent lacks most of
the recited components necessary for generating such a fire
suppressant foam.
Farison addresses a foam generating apparatus, e.g., for
foams used in industrial cleaning applications (col. 2, lines
21-22), which apparatus is specifically designed to be used
with an open drum (4) of foamable liquid. The apparatus
includes a source of compressed gas (not shown) capable of
supplying, via supply conduit (1), compressed gas (such as air
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