| 摘要 |
A brake shoe for spot-type disc brakes wherein a backing plate is formed with at least two projections, one extending further than the other, at the opposite lateral edges of the plate to which the friction lining is bonded. As a piston drives the backing plate and lining toward a brake disc, the lining is gradually worn away until the metal of the further extending projection comes into contact with the metal of the disc, thereby providing an audible squeal or warning signal to the vehicle operator while there is still enough brake lining remaining to provide adequate stopping power.
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