Appeal No. 1999-1080
Application No. 08/681,022
dispenser comprising: upper [14] and lower [12] sections, the
lower section containing at least two tubular containers [30,
32], each container being closed by a piston [40, 50] at a
lower end; a pair of pump means [42, 52] in the upper section,
the input to each pump means being aligned with a top of a
tubular
container; and conduit means [44, 46, 48, 54, 56, 58] in the
upper section aligned with the exit of each pump means and
providing a separate channel to an exit spout [16]. In
addition, claim 17 requires that each of the pump means
comprises: a pump chamber defined by a pump wall [43, 53]; a
first valve [49, 69] at a lower end of the pump chamber; a
second valve [45, 55] located in a pump piston [41, 51] which
is capable of moving inwardly and outward in the pump chamber;
each valve being capable of moving into and out of contact
with a valve seat [108 in Fig. 3A and 120 in Fig. 3B]; and a
spring means [23, 25, 35, 37] biasing each valve into a closed
position.
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