Fluid handling – With heating or cooling of the system – With electric heating element
Reexamination Certificate
2006-04-11
2006-04-11
Chambers, A. Michael (Department: 3753)
Fluid handling
With heating or cooling of the system
With electric heating element
C137S338000, C137S828000, C222S146500
Reexamination Certificate
active
07025081
ABSTRACT:
Apparatus for dispensing viscous liquid, such as hot melt adhesive, includes a manifold, a dispensing module, a heater thermally coupled to the manifold, and thermally insulating cover structure secured around both the module and the manifold. Air gaps are formed between the cover structure and the heated components inside to further reduce heat transfer. The cover structure may also include heat dissipating fins. A supply connector associated with the manifold includes an interior flow passage, an exterior annular recess and at least one port communicating therebetween. A valve includes a valve seat having an orifice and a sealing surface located around the orifice. The valve further includes a valve stem movable between open and closed positions and having a recess in one end and a sealing edge located around the recess. A valve module includes an integrated heating element for providing localized heat to the adhesive immediately prior to dispensing.
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Colangelo Paul K.
Petrecca Peter J.
Ramspeck Alan
Walker Michael
Chambers A. Michael
Nordson Corporation
Wood Herron & Evans L.L.P.
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