Dispensing – With discharge assistant – With movable nozzle interconnected therewith
Reexamination Certificate
2011-02-15
2011-02-15
Nicolas, Frederick C. (Department: 3754)
Dispensing
With discharge assistant
With movable nozzle interconnected therewith
C222S001000, C222S207000, C222S257000, C222S260000, C222S380000, C222S494000
Reexamination Certificate
active
07886937
ABSTRACT:
A dispenser has a housing, and a variable-volume storage chamber formed within the housing and defining a substantially fluid-tight seal between the chamber and exterior of the housing for storing a substance to be dispensed. A piston is mounted within the housing, and a one-way valve is mounted within the housing and coupled in fluid communication with the variable-volume storage chamber. A compression chamber is coupled in fluid communication between the piston and one-way valve, and at least one of the piston and valve is manually depressible relative to the other between (i) a first position in which the piston is located at least partially outside of the compression chamber for permitting substance to flow from the variable-volume storage chamber into the compression chamber, and (ii) a second position in which the piston is located at least partially within the compression chamber for pressurizing substance within the compression chamber above a valve opening pressure and, in turn, dispensing substance through the one-way valve and out of the dispenser.
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McCarter & English LLP
Medical Instill Technologies Inc.
Nicolas Frederick C.
LandOfFree
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