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Transvox S A
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Transvox S A
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Priority to ES1977227717UpriorityCriticalpatent/ES227717Y/en
Publication of ES227717UpublicationCriticalpatent/ES227717U/en
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Publication of ES227717YpublicationCriticalpatent/ES227717Y/en
Improved electronic door opener, characterized by incorporating, on traditional circuits for door opening, a logic circuit, normally forming a body with the general feeder and which is driven by a previously established key and which must be marked on the keyboard provided on the outer plate, added to the floor pushbuttons and with the marked sequence activates the memory of the logic circuit until the planned combination is made and when the last number is dialed, it closes the circuit activating the electromagnet of the door latch, which it will be open. (Machine-translation by Google Translate, not legally binding)
Security duct for transfering money from van to bank - consists of armour plated duct operated by hydraulic jacks and pushed through opening in van side
Improvements in, or related to, key-operated locks, which incorporate electrical switching means. (Machine-translation by Google Translate, not legally binding)