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
Wire guide
Wireless communication system, wireless communication device, wireless communication method, and program
Method and system for automatically hiding irrelevant parts of hierarchical structures in computer user interfaces
Method and system for Bluetooth low power link layer connection setup
Damage resistant antenna
Memory device and method for repairing a semiconductor memory
Method and apparatus for providing spin-home function for mobile communication terminal
  Randomly Featured Patents
Optimizing non-preemptible read-copy update for low-power usage by avoiding unnecessary wakeups
Piezo-electric assembly
Capillary electrophoresis method using initialized capillary and polyanion-containing buffer and chemical kit therefor
Loading and transport vehicle
Emergency seat belt cutter
X-ray backscatter system for imaging at shallow depths
Housing for a communication device
Memory device and method of reading data from a memory cell
Computer-control medical care system
Water treatment system