Sanitary fill tube and piston valve assembly for a pouch packaging machine
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United States of America Patent
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-
Oct 20, 1998
Grant Date -
N/A
app pub date -
Jun 2, 1997
filing date -
Jun 2, 1997
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A sanitary fill tube assembly includes an oval fill tube connected between an oval inlet tube and an oval spreader having a hollow interior with a piston valve member reciprocally mounted therein. The piston valve member is actuated by a plunger rod and is guided by a pair of arcuate guide slots formed in the spreader to accurately move the piston valve between open and closed position. The plunger rod and the piston valve member may include elongated internal passages therein and the piston valve member closely fits into a discharge outlet from the hollow interior of the spreader to accurately control and meter material being fed into a pouch. The piston valve member may be provided with a sharpened leading edge to cut off particulate material contacted thereby.
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