Electric heating – Heating devices – Combined with container – enclosure – or support for material...
Patent
1978-04-20
1980-10-07
Bartis, A.
Electric heating
Heating devices
Combined with container, enclosure, or support for material...
219214, 219296, 219523, 219530, 222146HE, 239135, B67D 562, H05B 378
Patent
active
042270693
ABSTRACT:
A hot melt pumping and dispensing apparatus for heating and pumping a heat liquefiable product from a barrel includes a platen movable into the barrel and having a plurality non-perforated, sector-shaped cast heater segments, each provided with an electric heater, arranged in a circle on the lower face of the platen and having inner ends defining a central space at a common apex thereof. The segments are spaced from each other to define narrow radial passageways between adjacent segments opening into the central space for delivery of liquefied product thereinto. A cartridge-type pump carried by the platen communicates with the central space. The lower face of each heater segment is provided with depending heat conducting cylindrical projections which extend in advance of the segments into the product in the barrel to preheat and soften the product. The segments may each have a truncated inner end or may each be pointed and have a truncated upper portion spaced radially outwardly of the point for defining the central space.
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Gardner James J.
Koppehele Hugh P.
Bartis A.
Nordson Corporation
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