ES208973A1 - Improvements in audible acoustic vibration devices, presence or crossing of vehicles, operated by electromagnetic control, with double simultaneous tone in a single body (Machine-translation by Google Translate, not legally binding)
- Google Patents
Improvements in audible acoustic vibration devices, presence or crossing of vehicles, operated by electromagnetic control, with double simultaneous tone in a single body (Machine-translation by Google Translate, not legally binding)
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Shielding Devices Or Components To Electric Or Magnetic Fields
(AREA)
Soundproofing, Sound Blocking, And Sound Damping
(AREA)
Abstract
Improvements in warning devices by acoustic vibration signaling of presence or crossing of vehicles driven by electromagnetic control with simultaneous double tone in a single body characterized by having arranged a metal body appropriately provided on its back with a cylinder-shaped circular chamber whose the interior walls have a threaded thread and whose base in a slightly concave or frustoconical shape has a perforation that communicates with an air inlet duct and another perforation that communicates with an air outlet duct. (Machine-translation by Google Translate, not legally binding)
ES0208973A1953-04-251953-04-25Improvements in audible acoustic vibration devices, presence or crossing of vehicles, operated by electromagnetic control, with double simultaneous tone in a single body (Machine-translation by Google Translate, not legally binding)
ExpiredES208973A1
(en)
Improvements in audible acoustic vibration devices, presence or crossing of vehicles, operated by electromagnetic control, with double simultaneous tone in a single body (Machine-translation by Google Translate, not legally binding)
Improvements in audible acoustic vibration devices, presence or crossing of vehicles, operated by electromagnetic control, with double simultaneous tone in a single body (Machine-translation by Google Translate, not legally binding)
Improvements in audible acoustic vibration devices, presence or crossing of vehicles, operated by electromagnetic control, with double simultaneous tone in a single body (Machine-translation by Google Translate, not legally binding)
Improvements in audible acoustic vibration devices, presence or crossing of vehicles, operated by electromagnetic control, with double simultaneous tone in a single body (Machine-translation by Google Translate, not legally binding)
Improvements introduced in the manufacture of appliances electroacºsticos de aspiraciºn. (Machine-translation by Google Translate, not legally binding)
Improvements introduced in the simultaneous double-tone speakers that work by air pressure (Machine-translation by Google Translate, not legally binding)