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
Image capturing apparatus, control method thereof, and program
Evaluation compiler method
Methods and systems for temporarily sharing position data between mobile-device users
Active matrix substrate, method for manufacturing same, and liquid crystal display apparatus
Planarizing agents and devices
Semiconductor device manufacturing method and device for same
Assigning runtime artifacts to software components
  Randomly Featured Patents
Conjugate, its preparation and use and a substrate prepared with the conjugate
Method and system for transferring delta difference data to a storage device
Ink stick for phase change ink jet printer
Adaptive network traffic shaper
Sealed lithium-reducible metal salt cell
Speed controller for drilling rig traveling block
Belt with wear-resistant anti-static fabric
Oligonucleotides and their use in an assay for encephalopathies
Independent front suspension for front wheel drive
System and method for revenue and authorization management