设计上，过载保护离合器结合型离合器，由弹簧作用的不可调离合器外加弹性离合器组成。
The overload clutch is designed as a clutch combination consisting of a spring-loaded non-shiftable clutch with an additional flexible clutch.
自动调速装置所界定的要求，1其中扭转弹簧连接到集线器的方式有弹性的部分构成了过载保护和阻尼装置。
Automatic speed regulating apparatus as defined in claim 1 in which the torsion spring is connected to the hub by means of a resilient portion constituting an overload protection and damping device.
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