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Automation
Hysteresis Clutch HKD
Description:
This is a street sign which is placed on the entrance and exit of street car stations. If there is no street car arriving or departing the street sign shall stand, if a train is coming it shall foldaway. The magnetic clutch was meant as safety device in case a pedestrian or car would be in the way. Technically it was the perfect solution, but it was to expensive. |