Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Philips Gloeilampenfabrieken NVfiledCriticalPhilips Gloeilampenfabrieken NV
Priority to ES0258951ApriorityCriticalpatent/ES258951A1/en
Publication of ES258951A1publicationCriticalpatent/ES258951A1/en
Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups
(AREA)
Abstract
Permanent magnetic loudspeaker device showing little dispersion in which at least one permanent magnet is disposed on the back side on a high permeability material, characterized in that said material has the shape of a plate whose surface shields part of the loudspeaker and it forms an acute angle with the axis of the set of magnets of the loudspeaker, the magnet being magnetized which is secured to the plate in a direction perpendicular to the plate, so that at least part of the scattering field of the set of magnets is counteracted and deflected . (Machine-translation by Google Translate, not legally binding)
ES0258951A1960-06-151960-06-15A speaker device (Machine-translation by Google Translate, not legally binding)
ExpiredES258951A1
(en)
Improvements in the construction of magnetic groups to permanent magnet, especially intended for loudspeakers and analogue applications (Machine-translation by Google Translate, not legally binding)