Safety seal for sterilizable containers

Details Safety seal for sterilizable containers Safety seal for sterilizable containers

1991-08-09

1992-09-15

Moore, Richard E.

Closure fasteners

Hasps

Sliding catch

292DIG66, 292144, E05C 102

Patent

active

051473518

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.

REFERENCES:
patent: 1800818 (1931-04-01), Devereaux
patent: 3807779 (1974-04-01), Enders
patent: 4539929 (1985-09-01), Sestak et al.
patent: 4753465 (1988-06-01), Dalby
patent: 5050778 (1991-09-01), Carrado et al.

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