Dispensing apparatus for viscous liquids
US7025081B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 5, 2002 |
| Grant date | Apr 11, 2006 |
| Priority date | — |
| Expiry date | Apr 7, 2023 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/6606
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.