Tamper-proof quality management barcode indicators

Patent metadata

Field	Value
Publication number	US-9122963-B2
Application number	US-201414461778-A
Country	US
Kind code	B2
Filing date	Aug 18, 2014
Priority date	Oct 22, 2012
Publication date	Sep 1, 2015
Grant date	Sep 1, 2015

Abstract

A tamper-proof barcoded quality indicator operative to provide a machine-readable indication of exceedance of time and temperature thresholds following actuation thereof, including a first barcode including a first colorable area and being machine-readable before exceedance of the time and temperature thresholds, a second barcode including a second colorable area and not being machine-readable before exceedance of the time and temperature thresholds, a coloring agent located at a first location on the indicator, a coloring agent pathway operative to allow the coloring agent to move, at a rate which is at least partially a function of time, from the first location to the first and second colorable areas simultaneously for simultaneous coloring thereof upon exceedance of the time and temperature thresholds, thereby causing the first barcode to become unreadable and at the same time causing the second barcode to become machine-readable, and a tamper-proof actuator element operative to actuate the indicator.

First claim

The invention claimed is:

1. A barcoded quality indicator operative to provide a machine-readable indication of exceedance of at least one time and temperature threshold following actuation thereof, said indicator comprising:
a first barcode including at least one first colorable area, said first barcode being machine-readable before exceedance of said at least one time and temperature threshold;
at least a second barcode including at least one second colorable area, said second barcode not being machine-readable before exceedance of said at least one time and temperature threshold;
a coloring agent located at a first location on said indicator;
a coloring agent pathway operative, following actuation of said quality indicator, to allow said coloring agent to move, at a rate which is at least partially a function of time, from said first location to said first and second colorable areas simultaneously for simultaneous coloring thereof upon exceedance of said time and temperature threshold, thereby causing said first barcode to become unreadable and at the same time causing said second barcode to become machine-readable;
an actuator element operative to actuate said quality indicator upon removal thereof from said quality indicator; and
a sealing element operative to seal said coloring agent pathway subsequent to removal of said actuator element, said sealing element comprising a foldable sealing tab operative to prevent damage to said barcoded quality indicator.

2. A barcoded quality indicator according to claim 1 and wherein said actuator element is disposed between said coloring agent and said coloring agent pathway prior to actuation of said quality indicator, thereby preventing passage of said coloring agent to said coloring agent pathway.

3. A barcoded quality indicator according to claim 1 and wherein said actuator element comprises a pullable actuator tab which protrudes from said quality indicator prior to actuation of said barcoded quality indicator.

4. A barcoded quality indicator according to claim 1 and wherein said actuation of said quality indicator comprises irreversibly removing said actuator element from said quality indicator, thereby irreversibly enabling passage of said coloring agent to said coloring agent pathway.

5. A tamper-proof barcoded quality indicator according to claim 1 and wherein said quality indicator also comprises a release layer which is adhered to an adhesive back surface of said quality indicator.

6. A tamper-proof barcoded quality indicator according to claim 5 and wherein removal of said release layer is operative to expose said adhesive back surface which is operable for adhering said quality indicator to a product for which quality is to be monitored.

7. A tamper-proof barcoded quality indicator according to claim 5 and wherein said release layer comprises a release tab operable for enabling release of said release layer from said adhesive back surface.

Assignees

• Varcode Ltd

Inventors

• Nemet Yaron

Classifications

• G06K19/06046

  Constructional details · CPC title

• G06K19/06028 Primary

  using bar codes · CPC title

• G06K19/0615 Primary

  the marking being of the rewritable type, e.g. thermo-chromic barcodes · CPC title

• G01D7/005

  Indication of measured value by colour change · CPC title