Appeal No. 2005-1159 Page 4
Application No. 09/760,189
purge rod 270 and flows radially out through ports 234, 236 and then downwardly along
the outer surface of mixing chamber defining member 218 and downwardly through the
bore within the mixing chamber defining member 218 to the lower tip of the mixing
chamber defining member 218.
The appellants argue that Sperry ‘848 lacks outlet ports “capable of directing
cleaning solvent radially outwards from said bore against said interior of said discharge
port” as called for in claim 1 and we agree. The only ports in the mixing chamber
defining member 218 of Sperry ‘848 capable of directing cleaning solvent radially
outwards from the bore are injection ports 234, 236. These ports are located above the
chemical internal passageways 176, 178 through which chemicals A and B are
introduced into the interior of the housing (main body 148) of the dispenser and cannot
reasonably be considered to be directing cleaning solvent radially outwardly against the
interior surface of the discharge port through which the chemicals may exit the housing.
The examiner reads the “discharge port” on opening 153 of main body 148 and the
appellants do not challenge this. We note, however, that the chemicals never enter
opening 153 but, rather, flow from passageways 176, 178 directly into the bore within
the mixing chamber defining member 218 through ports 234, 236. Accordingly, the
“discharge port” of claim 1 would appear to read on the exit end of said bore, not the
opening 153. As illustrated in Figure 28, the solvent is directed longitudinally
downwardly along the interior surface of the bore at its exit end, not radially outwardly
as called for in claim 1.
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