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
Scalable security services for multicast in a router having integrated zone-based firewall
Arcuate motion control in electrostatic actuators
Method and apparatuses for solving weighted planar graphs
Remote ignition system for a vehicle and method for securing a remote ignition function
Stretchable elastic laminate having increased CD elongation zones and method of production
Washing-up bowl
Distortion compensation device, distortion compensation method, and radio transmitter
  Randomly Featured Patents
Method of packaging and shipping roast and ground coffee
Capacitive displacement sensor for measuring thin targets
Dahlia plant named `Ruicaro`
Method and apparatus for providing multi-path I/O in non-concurrent clustering environment using SCSI-3 persistent reserve
Decorative toilet tissue storage unit
Treatment of human infertility
Modular, all season multi-compartment clothing
Coupled benzotriazole and benzophenone UV absorbers
Common protection architecture for optical network
Biatrial pacing optimization for biventricular pacing