Resources Contact Us Home
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
Storage device, data processing device, registration method, and recording medium
Wild card auto completion
Hepatitis C virus inhibitors
Method and system for constructing a customized web analytics application
Tray for microwave cooking and folding of a food product
Lateral double diffused metal oxide semiconductor device and method of manufacturing the same
System, method and computer program product for monitoring and controlling network connections from a supervisory operating system
  Randomly Featured Patents
Implantable blood pump
Photoelectric energy transducing apparatus
Binary parallel adder employing high speed gating circuitry
Saturation limiting system for a vertical, isolated collector PNP transistor and monolithically integrated structure thereof
Hard/soft spoon products
Diamond films and methods of making diamond films
Disc chucking apparatus and disc player having the same
Cage production
Packaging and storage container
Oil exchange timing indicating apparatus for vehicles