Instrument for measuring uniformity of tire

Measuring and testing – Tire – tread or roadway – Tire inflation testing installation

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384476, G01M 1702

Patent

active

051036690

ABSTRACT:
A tire uniformity measuring instrument which does not suffer from a temperature drift and assures accurate measurement of uniformity of a tire. The instrument includes a spindle to which a tire is removably mounted for coaxial integral rotation, a holder, a bearing for supporting the spindle for rotation around the spindle axis, and a driven drum supported for rotation around a fixed axis parallel to the axis of the spindle. The holder is movable in a direction perpendicular to the axis of the spindle until a tire connected to the spindle is contacted with the drum to allow the tire to be rotated by the drum when the drum is driven to rotate. A detector is held on the holder for measuring uniformity of a tire fixed to the spindle when the tire is rotated by the drum. The holder has a cooling water passage formed therein in the proximity of the bearing, and cooling water is circulated in the cooling water passage in the holder and cools the holder and the bearing.

REFERENCES:
patent: 4541738 (1985-09-01), Leibensperger et al.
patent: 4848143 (1989-07-01), Ushikoshi
patent: 4852398 (1989-08-01), Cargould et al.
patent: 4948269 (1990-08-01), Hamilton
patent: 4971128 (1990-11-01), Koga et al.

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