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
Hand-held optical probe based imaging system with 3D tracking facilities
Removable storage device and method for identifying drive letter of the removable storage device
Color variation control process for molding plastic and composite multi-color articles
Depth estimation apparatus and method
Optimizing federated and ETL'd databases with considerations of specialized data structures within an environment having multidimensional constraint
Method and system for placing an emergency call
Crystalline form of (R)-7-chloro-N-(quinuclidin-3-yl)benzo[b]thiophene-2-carboxamide hydrochloride monohydrate
  Randomly Featured Patents
Wall covering
Systems and methods for adaptive bit loading in a multiple antenna orthogonal frequency division multiplexed communication system
Driving method of plasma display panel and plasma display device
Arc fault detector with circuit interrupter
Solenoid antenna
Toy helicopter
Detecting anomalous trajectories in a video surveillance system
Automated termination station and method of using same
Collocational grammar system
Solid-state imaging device and method for manufacturing the same