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Publication of ES212521A1publicationCriticalpatent/ES212521A1/en
Air aspirator for moving material characterized in that it mounts in front and behind the nozzle possibly flared of a tube joining the aspirator to the space to be ventilated and covers the tube of a protective hood with deflector vanes that leave side openings between each other whose edges front and rear they are provided with deflection fins or profiles by projecting laterally so that the wind produced by the vehicle creates a zone of depression in the free spaces between the vanes. (Machine-translation by Google Translate, not legally binding)
ES0212521A1952-12-121953-12-04Air vacuum cleaner for mobile material (Machine-translation by Google Translate, not legally binding)
ExpiredES212521A1
(en)