| 摘要 |
A first wear feeler arranged in a brake lining slides within a borehole under the pressure of a spring in the direction towards a crown or disk. The feeler is immobilized at the level corresponding to the maximum wear of the lining. A second borehole which extends from the maximum wear level to the friction surface of the lining contains a second, licking feeler connected electrically to the first feeler. A line to an alarm is provided with a switch which is open upon braking maneuvers and closed otherwise. The closing of the alarm circuit other than during braking maneuvers is produced either in the case of licking of the lining on the disk or on the crown by the second feeler or in the case of maximum wear by the first feeler. |
