Screw closures for containers
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United States of America Patent
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-
Apr 14, 1992
Grant Date -
N/A
app pub date -
Mar 7, 1991
filing date -
Mar 10, 1990
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A screw closure for a container has a metal body shell (30) into which a plastics moulding (44) is snap-engaged. The moulding provides a screw thread (52) for the closure; in addition, it extends below the body shell to provide a security ring (50) which is attached by rupturable bridges (62). Relative rotation of the moulding and body shell when the closure is being fitted onto a container is prevented by teeth (58) formed around the top edge of the moulding, which deeply indents the sealing gasket (38) of the body shell.
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