Venting closure
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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-
Jan 20, 2004
Grant Date -
N/A
app pub date -
Jun 6, 2001
filing date -
Aug 22, 1998
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A closure cap (1) with a cap base (2) and with a cap skirt (3) comprises an inner seal (4). The inner seal is provided with bleeding reliefs (11) which lift the sealing effect as soon as the cap base (2) is displaced axially upwards. The closure cap (1) comprises a first abutment and a second abutment (8). On screwing-on firstly the second abutment (8) comes into engagement with the container opening. By way of this a weakening zone (9) in the region of the cap base (3) is pretensioned to a predeterminable value. On account of the predeterminable pretensioning of the weakening zone (9) a bleeding at an exactly defined excess pressure is possible.
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