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Priority to ES1971194946UpriorityCriticalpatent/ES194946Y/en
Publication of ES194946UpublicationCriticalpatent/ES194946U/en
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Publication of ES194946YpublicationCriticalpatent/ES194946Y/en
Safety device for electric motors, characterized essentially by the fact that in the input conductors comprise the start-up contactor and for each phase, a bypass for respective warning bulbs connected to the input neutral and which turn off when their phase fails respective, said bulbs being facing respective photoelectric cells that through a circuit comprising from the line a rectifier and trigger that by light beam drives a relay that sends the opening of the input contactor to the motor. (Machine-translation by Google Translate, not legally binding)
ES1971194946U1971-02-131971-02-13
SAFETY DEVICE FOR ELECTRIC MOTORS.
ExpiredES194946Y
(en)
Improvements in electrical control devices to automatically control the operation of a fuel burner. (Machine-translation by Google Translate, not legally binding)