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
Scoring users of network based users
Collaborative system for capture and reuse of software application knowledge and a method of realizing same
Techniques for accessing a parallel database system via external programs using vertical and/or horizontal partitioning
Support member, rotation device comprising such a support and rolling bearing assembly including such a detection device
Intrinsic absorber layer for photovoltaic cells
Anti-phishing system and method
Electronic badge
  Randomly Featured Patents
Corrosion inhibiting EMI/RFI shielding composition and method of its use
Methods and compositions for the inhibition of thrombus formation
Typewriting device
Methods and apparatus for geo-collaboration
Utilizing a scoreboard with multi-bit registers to indicate a progression status of an instruction that retrieves data
Device and method for managing access requests
Intake manifold structure for a V-type internal combustion engine
Apparatus and method for editing three dimensional objects
Components and methods for use in electro-optic displays
Manufacture of non-CFC cellular resol foams using perflurinated ethers