Vapor emitting wear indicator

Details Vapor emitting wear indicator Vapor emitting wear indicator

1984-06-29

1986-08-05

Crosland, Donnie L.

Communications: electrical

Selective

Having indication or alarm

340590, 116206, 116208, 116211, 116214, B60Q 100, G01D 2100

Patent

active

046046046

ABSTRACT:
A material wear indicator for a disc brake lining or clutch pad or any other erodible part comprises a vapor substance. Erosion of the part to a predetermined level exposes the substance to an ambient environment or other chemical means. The substance begins to exude an invisible vapor with a specific scent or oder. Alternatively or in combination with a scent emission, visible vapor can be color coded for a fretted part identification or erosion level thereof. The presence of the vapor immediately alerts service personnel of the danger and necessity to replace the worn-out part. The vapor emitting wear indicator does not require any electrical, hydraulic, sound or mechanical connection to any gauge or system and therefore represents one of the cheapest, reliable and most effective ways to indicate the selected level of material abrasion.

REFERENCES:
patent: 1755642 (1930-04-01), Gannon
patent: 2552271 (1951-05-01), Faus
patent: 3138224 (1964-06-01), White
patent: 4338097 (1982-07-01), Turner et al.

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