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End of Life Indicator

A technology of end-of-life and indicators, applied in the direction of analysis, instruments, scientific instruments, etc. using chemical indicators

Active Publication Date: 2020-09-11
HONEYWELL INT INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

One problem users are facing is determining when a dust mask has reached the end of its useful life

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0030] 1. An end-of-life indicator comprising:

[0031] an indicator material that reacts to environmental conditions and changes color in response to such indicator conditions;

[0032] a transparent protective film placed over the indicating material; and

[0033] A fastening system having an adhesive on the bottom side of the bottom, wherein the top of the fastening system supports a transparent protective film and has an opening through which the indicating material is visible through the transparent protective film, and wherein , the top including the clear protective film is removable to expose the indicating material.

[0034] 2. The indicator of embodiment 1, wherein the indicator material changes color to a color representing end of life of the device to which the indicator is coupled.

[0035] 3. The indicator of embodiment 2, wherein the device to which the indicator is coupled comprises a dust mask.

[0036] 4. The indicator of embodiment 2, wherein the device t...

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Abstract

An end of service life indicator including an indicating material that reacts to environmental conditions and changes color responsive to such indicator conditions, a transparent protective film disposed over the indicating material, and a fastening system having an adhesive on a bottom side of a bottom portion, wherein a top portion the fastening system supports the transparent protective film and has an opening through which the indicating material is visible through the transparent protective film, and wherein the top portion including the transparent protective film is removable to expose the indicating material.

Description

Background technique [0001] Due to air and water pollution, people are willing to care more and more about their health. For example, in smog people will wear dust masks to protect them from PM2.5 pollution. One problem that users are facing is determining when a dust mask has reached the end of its useful life. Contents of the invention [0002] The present invention relates to an end of service life indicator; the indicator comprising: an indicating material that reacts to environmental conditions and changes color in response to such indicator conditions; a transparent protective film disposed on the indicating material; and at the bottom A fastening system with adhesive on the bottom side of a , wherein the top of the fastening system supports a transparent protective film and has an opening through which the indicating material is visible through the transparent protective film, and wherein the transparent protective film is included The top of the is removable to exp...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N33/00
CPCG01N31/229G01N33/02
Inventor 王藜
Owner HONEYWELL INT INC