ES302587A1 - Improvements in the manufacture of acoustic membranes for loudspeakers of wide range of frequencies. (Machine-translation by Google Translate, not legally binding)
- Google Patents
Improvements in the manufacture of acoustic membranes for loudspeakers of wide range of frequencies. (Machine-translation by Google Translate, not legally binding)
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ROSELLE OLIVE RAMEN
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ROSELLE OLIVE RAMEN
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Diaphragms For Electromechanical Transducers
(AREA)
Abstract
Improvements in the manufacture of acoustic membranes for wide-frequency loudspeakers, essentially characterized in that the membranes are obtained by molding composite sheets, formed by the superposition of a thin sheet of polyterephthalate, a sheet of polyester fiber and another thin sheet of polyterephthalate, precisely in this order, and performing the molding operation under certain conditions and critical pressure, temperature and duration, conditions dependent on the diameter of the membranes to be made. (Machine-translation by Google Translate, not legally binding)
ES0302587A1964-07-211964-07-21Improvements in the manufacture of acoustic membranes for loudspeakers of wide range of frequencies. (Machine-translation by Google Translate, not legally binding)
ExpiredES302587A1
(en)
Improvements in the manufacture of acoustic membranes for loudspeakers of wide range of frequencies. (Machine-translation by Google Translate, not legally binding)
Improvements in the manufacture of acoustic membranes for loudspeakers of wide range of frequencies. (Machine-translation by Google Translate, not legally binding)
Improvements in the manufacture of acoustic membranes for loudspeakers of wide range of frequencies. (Machine-translation by Google Translate, not legally binding)
Improvements in the manufacture of acoustic membranes for loudspeakers of wide range of frequencies. (Machine-translation by Google Translate, not legally binding)
Improvements in the manufacture of vibratory membranes for motors of high frequencies loudspeakers. (Machine-translation by Google Translate, not legally binding)
Procedure for the manufacture of a laminar material of microporose structure, permeable and hydrofugo. (Machine-translation by Google Translate, not legally binding)
A procedure for the production of quiltings of elastic material in expansion poroso moldeado (Machine-translation by Google Translate, not legally binding)