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| Application No. | Application Title | Issue Date |
| 20100296687 | Diaphragm and Speaker The present invention provides a dome diaphragm having high strength wholly and uniformly while maintaining a small thickness of a dome portion. A diaphragm 1 according to the present invention is a dome diaphragm including a dome portion 2. The dome porti... | 11/25/2010 |
| 20100092023 | SPEAKER MOTOR AND SPEAKER A diaphragm for a speaker includes two portions. The first portion is made of metallic material for producing a high frequency tone. The second portion is made of a non-metallic material for producing a low frequency tone. The first portion is joined at a first peripher... | 04/15/2010 |
| 20090304225 | DOME-SHAPED DIAPHRAGM AND LOUDSPEAKER USING THE SAME The present invention provides a dome-shaped diaphragm fabricated based on a film base of polyethylene terephthalate resin film. The diaphragm includes a first vibrating part of a dome shape or a flat shape, and a second vibrating part of an annular shape. The second vi... | 12/10/2009 |
| 20090200101 | Acoustic transducer made of pure beryllium with directed radiation, with a concave-shaped diaphragm, for audio applications, in particular for acoustic enclosures A loudspeaker for acoustic enclosure, in particular a tweeter or a medium-frequency loudspeaker, which consists of a spherical diaphragm with direct radiation, with a front side that is concave in relation to the spool, and onto which is attached at a certain level, for... | 08/13/2009 |
| 20060113144 | Direct radiation pure beryllium acoustic transducer having a concave membrane , used for audio applications, especially for loudspeaker cabinets A loudspeaker for acoustic enclosure, in particular a tweeter or a medium-frequency loudspeaker, which consists of a spherical diaphragm with direct radiation, with a front side that is concave in relation to the spool, and onto which is attached at a certain level, for... | 06/01/2006 |
| 20050257999 | Bobbin integrated type magnesium diaphragm, manufacturing method thereof, and speaker device using the diaphragm In the rolling process, a rolling amount at each time of rolling by a rolling machine is set to 1 μm to 20 μm, and a magnesium substrate is heated by a constant temperature oven and rolled by rollers. Thus, a magnesium sheet of 30 μm to 100 μm is produced. This magn... | 11/24/2005 |
| 20050211499 | Loudspeaker diaphragm A loudspeaker diaphragm for converting fluctuating electric energy into acoustic energy is made of a composite of paper, fiber material, plastic, laminate, metal foil, or a combination of the afore-mentioned materials, and elastic plastic foam he composite may hereby be... | 09/29/2005 |
