Safety seal for sterilizable containers
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United States of America Patent
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-
Sep 15, 1992
Grant Date -
N/A
app pub date -
Aug 9, 1991
filing date -
Aug 10, 1989
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A safety seal for sterilizable containers that is closed by the temperature prevailing in the sterilizer. The closed seal then indicates the integrity of the container. The sealing mechanism in the illustrated embodiment is a pushbutton 100 that is subject to the force of a spring 102. The spring is made of a memory-retaining alloy that provides tension at a temperature above a transition temperature and forces the pushbutton into a locking state. The container can be opened once the pushbutton has been forced back, but the pushbutton cannot be returned to its locking position until it attains the transition temperature again.
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