Indicator device

Details Indicator device Indicator device

A - Human Necessities

42

B

A42B 3/04 (2006.01) G01N 33/44 (2006.01)

Patent

CA 2535377

The disclosure relates to an indicator device (5) for determining the ageing of an object of plastic, which is degradable by UV radiation. The indicator device is fixedly disposed on or integrated in the object, and includes pigment which is degradable by UV radiation. The degradation of the pigment either follows the degradation of the plastic included in the object or corresponds to a predetermined interval of time in compliance with legislation or other regulations. The disclosure also relates to a safety helmet which includes an indicator device (5) displaying properties in accordance with the foregoing.

Cette invention se rapporte à un dispositif indicateur (5) permettant de déterminer le vieillissement d'un objet en plastique, dégradable sous l'effet d'un rayonnement UV. Ce dispositif indicateur est disposé en position fixe sur l'objet ou intégré à l'objet, et il contient un pigment dégradable sous l'effet d'un rayonnement UV. Soit la dégradation du pigment suit la dégradation du plastique contenu dans l'objet soit elle correspond à un intervalle de temps prédéterminé conformément à la législation ou à d'autres régulations. Cette invention concerne également un casque de protection qui contient un dispositif indicateur (5) possédant les propriétés exposées dans ce qui précède.

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