Tamper indicating closure
First Claim
1. A tamper indicating closure for a container, said closure including an upper wall, a peripheral wall and means for securing said closure to said container, the improvement comprisinga display window in one of said walls,electronically controlled display means within said closure and adjacent said display window for displaying a signal visible through said display window indicating whether the closure has been opened,a source of electric power,electric circuit means for controlling said display means, said source and electric circuit means being physically retained within said closure and in an electric circuit with said display means, anddetecting means within said closure for detecting engagement of said closure and container and for producing an electrical signal depending on such engagement, said electric circuit means being responsive to said detecting means for determining the signal to be displayed by said display means.
1 Assignment
0 Petitions
Accused Products
Abstract
A device for indicating whether a container having a cap has been opened. The device includes a switch or pressure transducer for detecting the engagement of the cap to the container and disengagement therefrom. A display, which is visible through the top of the cap, provides a plurality of messages which are in an irreversible and nonrepeatable sequence for indicating whether or not the cap has ever been removed from the container.
55 Citations
18 Claims
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1. A tamper indicating closure for a container, said closure including an upper wall, a peripheral wall and means for securing said closure to said container, the improvement comprising
a display window in one of said walls, electronically controlled display means within said closure and adjacent said display window for displaying a signal visible through said display window indicating whether the closure has been opened, a source of electric power, electric circuit means for controlling said display means, said source and electric circuit means being physically retained within said closure and in an electric circuit with said display means, and detecting means within said closure for detecting engagement of said closure and container and for producing an electrical signal depending on such engagement, said electric circuit means being responsive to said detecting means for determining the signal to be displayed by said display means.
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10. In combination, a tamper indicating closure and container, said closure including an upper wall, a peripheral wall and means for securing said closure to said container, the improvement comprising
a display window in one of said walls, electronically controlled display means within said closure and adjacent said display window for displaying a signal visible through said display window indicating whether the closure has been opened, a source of electric power, electric circuit means for controlling said display means, said source and electric circuit means being physically retained within said closure and in an electric circuit with said display means, and detecting means within said closure for detecting engagement of said closure and container for producing an electrical signal depending on such engagement, said electric circuit means being responsive to said detecting means for determining the signal to be displayed by said display means.
Specification