| 摘要 |
An electromagnetic clutch-brake with wear compensating means having mating frusto-conical friction members for transmitting torque and a ferromagnetic armature threaded to one of such friction members for clutch engagement. When the clutch is energized, the armature, which is not in the drive train, comes into contact with the pole faces of the electromagnet, causing the freely mounted armature to rotate with the input member. The relative rotational motion between the armature and the driven friction member causes the driven friction member to advance on its helical thread until engagement with the driving friction member. The output member is driven through a flexible member connected to the driven friction member. As a safety feature, the driven friction member biased by the flexible torque transmitting member is caused to bear against a stationary braking body to achieve braking whenever the driven friction member is not in torque transmitting contact with the input member.
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