Dispensing – With discharge assistant – With biasing means for discharge assistant and/or its casing
Reexamination Certificate
2006-12-20
2009-08-11
Ngo, Lien T (Department: 3754)
Dispensing
With discharge assistant
With biasing means for discharge assistant and/or its casing
C222S383100, C239S333000
Reexamination Certificate
active
07571836
ABSTRACT:
A manually operated trigger sprayer includes U-shaped springs that bias the trigger sprayer trigger away from the trigger sprayer pump chamber, where the U-shaped springs are connected to a piston rod by a snap-fit connection. The connection includes a compressible forward end of the piston rod that is pressed through an opening on the forward end of the spring to connect the piston rod to the spring. The rearward end of the spring is connected to the sprayer housing by a curved surface that engages around an exterior surface of the pump chamber.
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Foster Donald D.
Nelson Philip L.
MeadWestvaco Calmar Inc.
Ngo Lien T
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