Speciality closures for bottle necks
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Apr 25, 1989
Grant Date -
N/A
app pub date -
Feb 25, 1987
filing date -
Feb 25, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A closure for a bottle neck having a tubular upper portion internally having an upstanding post having at least one axially extending passage. The base has an upstanding portion having an external screw thread. The cap has a skirt rotatively surrounding the upper portion, and the skirt has at least one internal protuberance in screw threaded engagement with that screw thread. The cap has a closed top in which a hole is formed and which is closed by the upper end of the post formed by the base, the hole being closed by this upper end when the cap is screwed downwardly and opened when the cap is screwed upwardly.
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