Tamper evident closure
First Claim
1. A tamper evident closure comprising:
- a. a blister pack disposed within a housing, the blister pack containing a first reagent visible prior to first opening of the closure; and
b. a substrate disposed within the housing, the substrate containing a second reagent, such that a first opening of the closure ruptures the blister pack thereby exposing the first reagent to the second reagent and effects a reaction causing a visual change that signals that the closure has been opened.
1 Assignment
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Accused Products
Abstract
A tamper evident closure (1) includes a housing (5) containing a blister pack (2) and a substrate (3), wherein the blister pack (2) contains a first reagent which is visible prior to first opening and the substrate (3) contains a second reagent. First opening of the closure ruptures the blister pack thereby exposing the first reagent to the second reagent and effecting a reaction that causes a visual change that signals the closure has been opened. The tamper evident closure of the present invention is primarily intended to be used as an anti-counterfeit measure on a spirit or pharmaceutical bottle. In the preferred embodiment, the closure incorporates a liquid that when brought into contact with a reagent chemical contained in an absorbent pad, effects an irreversible color change. This color change will indicate to a consumer the bottle has been previously opened or tampered with. The design makes it very difficult for a counterfeiter to cover up or eradicate the visible effects. In particular, the only way a counterfeiter could do this would be to put in a replacement blister and an absorbent pad. Filling a blister pack with a liquid is a highly specialist task which makes replication very difficult. The ability to control the color change to complement the branded goods provides a way of building up consumer recognition of the product and thereby establishing confidence in those products that carry the tamper evident closure of the present invention.
30 Citations
31 Claims
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1. A tamper evident closure comprising:
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a. a blister pack disposed within a housing, the blister pack containing a first reagent visible prior to first opening of the closure; and
b. a substrate disposed within the housing, the substrate containing a second reagent, such that a first opening of the closure ruptures the blister pack thereby exposing the first reagent to the second reagent and effects a reaction causing a visual change that signals that the closure has been opened. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31)
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Specification