Chemical apparatus and process disinfecting – deodorizing – preser – Control element responsive to a sensed operating condition
Reexamination Certificate
2007-06-19
2007-06-19
Warden, Jill (Department: 1743)
Chemical apparatus and process disinfecting, deodorizing, preser
Control element responsive to a sensed operating condition
C422S105000, C347S046000
Reexamination Certificate
active
11186150
ABSTRACT:
Devices useful in liquid transfer applications and in particular, devices for controlling the free surface of a source liquid in acoustic liquid ejection systems are disclosed. The devices advantageously maintain a source liquid to be transferred at a constant height and reduce disturbances formed in the liquid due to droplet ejection. In one variation, a well plate includes a plurality of wells each having a capillary. Source liquid in a well moves up the capillary due to capillary action and arrives at a certain height. The height arrived at remains constant despite the source liquid depleting from the well during the ejection process. The capillary can be separately joined or integral with the well plate. An acoustic wave emitter positioned adjacent to the well plate emits a focused acoustic beam that causes at least some of the liquid in the capillary to be ejected.
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Chow Humphrey W.
Reichel Charles A.
Williams Roger O.
EDC Biosystems, Inc.
Handy Dwayne K.
Pagel Donald J.
Warden Jill
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