Dispensing – With heating or cooling means – Cooling only
Patent
1980-10-06
1982-04-06
Rolla, Joseph J.
Dispensing
With heating or cooling means
Cooling only
222146HE, 222413, B67D 562
Patent
active
043231748
ABSTRACT:
Apparatus for dispensing mastic material such as butyle mastic sealant consists of a hopper for receiving cold mastic material and which is arranged to be heated to soften the material for feeding towards an outlet by a feed screw in a lower longitudinal receptacle. A pre-heating coil is provided in the hopper and a lower part of the latter and the lower receptacle and an outlet barrel are housed in a tank containing a heating fluid such as oil heated by thermostatically controlled immersion heaters to maintain the mastic material in the required softened condition in the hopper receptacle and barrel. Heated oil from the tank is circulated through the pre-heating coil. A reduced continuation of the feed screw operates in the barrel for force feed of the heat softened mastic material to the outlet. In use an applicator nozzle or gun is connected by a hose to the outlet. Both the hose and gun are heated to maintain the mastic material in a required softened condition up to the point of issue from the gun. Operation of the gun may also control operation of the feed screw drive.
REFERENCES:
patent: 3598282 (1971-08-01), Phillips et al.
patent: 3910323 (1975-10-01), Harding et al.
patent: 4096973 (1978-06-01), Checko
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