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
Cell surface display, screening and production of proteins of interest
Organic elelectroluminescent display
Process for recovering and recycling an acid catalyst
Alleviation of laser-induced damage in optical materials by suppression of transient color centers formation and control of phonon population
Accessing a base station
Protecting information written to recording medium
Routing of data including multimedia between electronic devices
  Randomly Featured Patents
Chemiluminescence sensor array
Air inlet and automatic pressure adjustment device for a tire
Method of locating wellbore casing collars using dual-purpose magnet
Spatial separation of spectral components
Fire hydrant shaped dog biscuit baking tray
System and method for transacting purchases with a cash vendor using points
Method for the integrated series-interconnection of thick-film solar cells and method for the manufacture of tandem solar cells
Apparatus for forming a confectionary rope having a viscous center
Polypeptides having beta-glucosidase activity and polynucleotides encoding same
Biometric token for authorizing access to a host system