Sanitary fill tube and piston valve assembly for a pouch packagi

Details Sanitary fill tube and piston valve assembly for a pouch packagi Sanitary fill tube and piston valve assembly for a pouch packagi

1997-06-02

1998-10-20

Moon, Daniel B.

Package making

Progressively seamed cover web or web folds

With closing of web between package units

137240, 251339, 251324, 251123, 222559, 222630, B65B 906

Patent

active

058229582

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.

REFERENCES:
patent: 466633 (1892-01-01), Stevens
patent: 3719021 (1973-03-01), Rosenberg
patent: 4480789 (1984-11-01), Kemper
patent: 4608810 (1986-09-01), Bordini
patent: 4703776 (1987-11-01), Rumney
patent: 4769974 (1988-09-01), Davis
patent: 4838325 (1989-06-01), Bordini
patent: 5074470 (1991-12-01), Rosenplanter et al.
patent: 5097993 (1992-03-01), Davis
patent: 5119991 (1992-06-01), Divers

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