Patent ID: 9588053
Date: 2017-03-07
CPC Classifications: B60C,B60G,F16F,G01K,G01N,Y10T

Claim:
1. A replacement indicator for use in cooperation with an associated elastomeric spring member having an associated exterior surface, said replacement indicator comprising a layer of material including a first side securable along the associated exterior surface of the associated elastomeric spring member and a second side facing opposite said first side such that said second side is exposable to one or more environmental agents to which the associated elastomeric spring member would be simultaneously exposed in an installed condition of said replacement indicator, said layer of material having a visually-observable characteristic that changes from a first color to a second color that is different from said first color upon exposure to a predetermined level of said one or more environmental agents with said change from said first color to said second color capable of being correlated to a change in a material characteristic of the associated elastomeric spring member.