Device for closing, with a security seal, a container of a rigid material, such as glass, by means of a screw cap of rigid thermoplastics material
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Mar 30, 1993
Grant Date -
N/A
app pub date -
Sep 30, 1991
filing date -
Apr 13, 1989
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The end wall of a screw cap of rigid thermoplastics material is provided with a sealing ring of heat-polymerized plastisol and the cylindrical skirt of the cap has an internal multiple thread at its upper end, an intermediate opening tear-strip and a lower part with an internal annular engagement rib which snap-engages under an annular rib of triangular cross-section situated below the thread of the threaded neck of a rigid container. The annular rib of the cap is interrupted in a plurality of zones and the neck of the container has a corresponding plurality of projections which extend downwards from the base of the triangular rib and, upon completion of the first screwing on of the cap, are each positioned in one of the interrupted zones of the rib of the cap, so as to prevent both a limited accidental unscrewing of the cap and the overtightening of the cap, and thus prevent the seal of the closure from being compromised in both cases.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully