Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Diaphragm and loudspeaker unit using the same










Image Number 4 for United States Patent #8135165.

A diaphragm, and a loudspeaker unit using the same, capable of providing better low-tone characteristics than conventional ones. A loudspeaker unit includes a base frame and a cover plate joined to each other to provide a flat casing. Arranged in the casing are a diaphragm and a drive mechanism for vibrating the diaphragm. The diaphragm consists of a rectangular area and a pair of semi-elliptic areas, spreading rightward and leftward from the rectangular area, and has an elliptic central portion having its major axis in the longitudinal direction of the diaphragm and a peripheral portion spreading around the central portion. The central portion includes an adhesive layer for fixing a coil, laid on a central area of a diaphragm body, and is formed thicker than the peripheral portion.








 
 
  Recently Added Patents
Creating three dimensional graphics data
Arbitration for memory device with commands
Method and system for encrypting data in a wireless communication system
Business flow processing method and apparatus
Linear jet ionizer
Female urine funnel
Solid-state imaging apparatus and imaging system
  Randomly Featured Patents
Carbon material and process of manufacturing
Print system and registration control method at print start time of the print system
User interface for a portion of a display screen
Method and apparatus for sorting timber
Motor vehicle braking apparatus using accelerator pedal
Recording/playback apparatus, recording/playback method, program, and storage medium
Construction machine control system
Round lock
Auction method and apparatus
Screw mixer, particulary for foundry molds