Filling machine and method for low particulate chemicals
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United States of America Patent
Stats
-
Jul 21, 1981
Grant Date -
N/A
app pub date -
Oct 5, 1979
filing date -
Oct 5, 1979
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A plurality of bottles (125) or other containers are delivered and aligned under a plurality of filler heads (110) each having a liquid feed channel (113) extending vertically downward to outwardly opening apertures (119) and also an inert gas feed channel (116) extending vertically downward to a lower end (117) below the apertures (119). The bottles (125) are moved upward (134) and chemicals are delivered into the bottles (125) through the liquid feed channel (113) and apertures (119). When the liquid level (127) of each bottle reaches the lower end (117), the back pressure in the inert gas feed channel (116) is sensed (123) and the liquid flow is shut off (120). Contamination of the bottles by particulates is minimized since no moving parts are required above the level of the bottles and because no contact is required between the filler heads and the bottles.
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