Resources Contact Us Home

Image Number 3 for United States Patent #6522759.

A reduced-size speaker for generating sound waves in wide low frequency audio region includes a cylindrical main body which is open at the top and bottom surfaces, a top lid being provided on the top surface of the main body and a circular ring-shaped base, which has a hole in its center, being provided on the bottom surface of the main body. A circular sound pipe is provided approximately in the center of the top lid and extends from the upper surface of the main body through the inside of the main body. A disc-like film is provided over the opening of the hole of the base, which is located at the outer side with respect to the main body, the disc-like film being held between the base and a circular ring-shaped bottom lid. A disc-like sound generator is provided in the opening of the hole of the base, which is located at the inner side with respect to the main body, with a circular ring-shaped damper provided in between. A plurality of supporting members are attached to the bottom lid in order to mount the speaker on a mounting surface.

  Recently Added Patents
Method and apparatus for editing a program on an optical disc
Triple-trim reference voltage generator
Electronic component mounting machine and operating instruction method for the same
Formwork release composition and use thereof
Solid-state imaging device, method for manufacturing solid-state imaging device, and electronic apparatus
Pressing mold for optical lenses and method for manufacturing glass optical lenses
Electronic dispersion compensation within optical communications using reconstruction
  Randomly Featured Patents
Video projector
Micro-curvature adjustable device for curve screen printing presses and ironing presses
Demultiplexing photodiode sensitive to plural wavelength bands
Semiconductor device with a transistor having different source and drain lengths
Method of treating the products of combustion of landfill gas
Mounting panel, system and method for high density fiber optic applications
Arrangement for analysis of substances at the surface of an optical sensor
Bulging element on printed circuit board
Device for heating a biotissue employing a strong light