Dispensing – Motor operated outlet element
Reexamination Certificate
2007-11-20
2007-11-20
Jacyna, J. Casimer (Department: 3754)
Dispensing
Motor operated outlet element
C222S146500, C222S389000
Reexamination Certificate
active
10904662
ABSTRACT:
A device for dispensing a heated liquid, such as a hot melt adhesive, which includes a heated dispenser body having a liquid passage in communication with a liquid inlet and a liquid outlet. The dispenser body further includes a valve element having a circumferential groove therearound cooperating with a recessed portion of the dispenser body to define a cavity about the valve element. A flexible seal is situated within the cavity between the liquid passage containing the heated liquid and an upper area of the dispenser body. A first portion of the seal is configured to form a fluid tight seal within the recessed portion and a second portion is configured to form a fluid tight seal about the valve element during reciprocation thereof relative to the recessed portion, thereby preventing liquid from leaking out of the liquid passage past the flexible seal and into the upper area.
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EFD, Piston Valve Systems for Precise Deposits of Viscous Fluids, Brochure, 2006, 2 pgs.
EFD, Compact Diaphragm Valve for Fine Flow Control, Brochure, 2006, 2 pgs.
Jacyna J. Casimer
Nordson Corporation
Wood Herron & Evans LLP
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