Article of manufacture having non-uniform thermochromic display

Details Article of manufacture having non-uniform thermochromic display Article of manufacture having non-uniform thermochromic display

2005-12-27

2005-12-27

Verbitsky, Gail (Department: 2859)

Thermal measuring and testing

Temperature measurement

Nonelectrical, nonmagnetic, or nonmechanical temperature...

C374S157000, C116S216000

Reexamination Certificate

active

06979120

ABSTRACT:
A beverage container has a wall with a thickness that progresses from relatively thinner to relatively thicker in a selected direction that travels around the container. A permanent graphics pattern is applied to the outer surface of the wall to progress in the same direction across the container. A layer of thermochromic ink is applied to the outer surface of the container wall to initially mask the graphics pattern (or at least portions thereof) progressing across the container wall. The thermochromic ink layer is of a composition that reacts to heat or cold and changes from opaque to transparent when the temperature transferred to it through the wall of the container changes to a relatively higher or relatively lower transition temperature. The gradient in wall thickness of the container causes a non-uniform transfer of thermal energy to the thermochromic layer, causing the thermochromic mask to disappear at a controlled rate, thereby causing the graphics pattern underneath to be revealed in a time-delayed sequence that reveals elements of the graphics pattern that progress across the container wall in a left-to-right, or right-to-left, or down-to-up, or up-to-down time-related sequence.

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