Dispensing – With wick or absorbent material feed
Reexamination Certificate
2008-04-22
2008-04-22
Nicolas, Frederick C. (Department: 3754)
Dispensing
With wick or absorbent material feed
C222S081000, C222S541200, C137S583000, C137S587000, C220S367100, C220S745000, C239S034000, C239S044000, C239S145000
Reexamination Certificate
active
07360671
ABSTRACT:
A liquid reservoir comprising a container (20) forming a chamber for holding the liquid (27). The container has a top wall (23) that closes the upper end of the chamber, a liquid outlet (35) in fluid communication with a lower en d of the chamber, and an air supply duct (47) through which air can enter the lower end of the chamber. In use, the reservoir finds an equilibrium position in which, due to a reduction in pressure in an air space (29) formed above the liquid (27) at the closed, upper end of the chamber, the column of liquid in the chamber is supported by atmospheric pressure acting at the opening of the air supply duct (47) to the lower end of the chamber. This opening is achieved by breaking a frangible seal (32) across the duct (47) by the axial insertion of the liquid outlet (35). While the seal was unbroken the container offered a self-contained capsule of liquid for replacement fitting with the liquid outlet portion.
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patent: 0 203 744 (1986-12-01), None
patent: WO 01/23008 (2001-04-01), None
Nicolas Frederick C.
Pillsbury Winthrop Shaw & Pittman LLP
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