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DE488641C
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Automatic friction clutch
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GB253933A
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Method and apparatus for starting electromotors by means of an automatic starting coupling
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DE455502C
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Automatic friction clutch
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DE535235C
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Clutch with time delay when switching
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DE593319C
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Starting device for electric motors that start freely before the load, with a single-stage voltage reduction
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DE603516C
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Starting device for electric motors that start freely before the load, with a single-stage voltage reduction
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DE457263C
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Starting procedure for with an automatic clutch provided, electrically multi-stage switchable electric motors
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DE470157C
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Starting device for short-circuit armature motors that start with reduced voltage using automatic mechanical clutches
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