B - Operations – Transporting – 60 – C
Patent
B - Operations, Transporting
60
C
152/39, 116/47,
B60C 11/24 (2006.01)
Patent
CA 1047845
ABSTRACT OF THE DISCLOSURE A tread depth indicator for a vehicle tire consisting of a rod-like body having a head on one end and imbedded head end foremost into a blind hole in the tire tread with the outer end of the body substantially flush with the surface of the tire tread. The body of the indicator wears off at not less than the same rate as the tire tread when the tire rolls on a roadway and there is an outwardly facing region in the indicator located at about the maximum desired depth for the tread to wear down which provides an indication when the tread wears down to that depth. Advantageously, the body has a short pin of hard wear resistant material, such as cemented hard metal carbide material therein at the head end with the radially outer end of the pin forming the aforementioned region. The indication given by the indicator when the tread wears down to the aforementioned level is both visible by observation of the tire and is audible when the tire rolls on a roadway. Advantageously, the indicating means consists of a series of the tread depth indicators distributed laterally in one or two circumferentially spaced regions of the tire or, in the case of radial tires, in one or two circumferential regions of the tire in the side regions of the tire tread.
214573
Kennametal Inc.
Na
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