Gas and liquid contact apparatus – Contact devices – Liquid tank
Patent
1977-03-14
1979-05-01
Lutter, Frank W.
Gas and liquid contact apparatus
Contact devices
Liquid tank
128187, 215250, 215DIG3, 220258, 220278, 222541, 261DIG65, A61M 1500
Patent
active
041523784
ABSTRACT:
A screw top closure for a container opening defining a helically threaded neck, and a rotatable screw top positioned to permit rotation by the screw top between outward and inward positions on the neck. A sealing partition is positioned across the opening of the neck. In accordance with this invention, an aperture is defined in the sealing partition, the aperture being positioned in off-center relation to the rotational axis of the screw top. A sealing cap member is positioned across the aperture, with a rupturable seal, facing the screw top. A projection is defined on the side of the screw top facing the partition, being positioned to be longitudinally spaced from the sealing cap member when the screw top is in the outward position, and to engage the sealing cap member when the screw top is rotationally advanced to its inward position. Accordingly, the seal between the cap member and the partition may be ruptured in aseptic manner by the projection, to open the aperture.
REFERENCES:
patent: 1850911 (1932-03-01), Barlow
patent: 3092291 (1963-06-01), Franck
patent: 3187918 (1965-06-01), Moore
patent: 3207375 (1965-09-01), Bereziat et al.
patent: 3314429 (1967-04-01), Boehm et al.
patent: 3401819 (1968-09-01), Salamone
patent: 3802604 (1974-04-01), Morane et al.
patent: 3844443 (1974-10-01), Cudzik
patent: 4011288 (1977-03-01), Assenheimer et al.
Vcelka John L.
Winchell David A.
Baxter Travenol Laboratories Inc.
Clements Gregory N.
Ellis Garrettson
Flattery Paul C.
Kirby, Jr. John P.
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