Acoustics inventions 09/06

20060207826 - Composite muffler for use with airborne auxiliary power unit: The present invention provides a composite muffler for use with an auxiliary power unit. The composite muffler comprises a composite outer can, an annular baffle, an acoustic liner, and a thermal barrier. The composite outer can is disposed substantially symmetrically about a longitudinal axis and has an inner peripheral surface...

20060207827 - Support means for an acoustic liner used in an auxiliary power unit exhaust muffler: The present invention provides support means for an acoustic liner in an APU exhaust system, where the acoustic liner has a tubular sidewall with an outer surface, a first longitudinal edge, a second longitudinal edge, and an axial gap formed between the first and the second longitudinal edges. The APU...

20060201738 - Stethoscope with identifying-personalizing ring: A medical stethoscope head (1) comprises a body (2) with an inlet pipe and at least one diaphragm portion (4) provided with a diaphragm (5) at its lower surface. At least one identifying-personalizing ring (11) provided with identifying-personalizing means (14) is mounted in any area of an upper surface (10)...

20060201739 - Bass reflex type loudspeaker apparatus, loudspeaker box and image display apparatus: A bass reflex type loudspeaker apparatus is provided in which a long route of a bass reflex duct is obtained in the case where a loudspeaker box is made thin. The bass reflex duct is provided in the loudspeaker box such that the route thereof is extended in a direction...

20060201740 - Pot-plant-shaped loudspeaker cabinet: A pot-plant-shaped loudspeaker cabinet mainly includes a flowerpot-shaped and open-topped hollow enclosure, at least one speaker received in the enclosure, a cover closing a top opening of the enclosure, a decorative pot plant fixed to the cover and including a plurality of optical fibers and a light source connected to...

20060201741 - Ultralight soundproof material: A sound insulator of the invention includes a sound absorption layer 202 and an air-impermeable resonance layer 203, which are bonded to each other via an adhesive layer 204. The sound absorption layer 202 has a thickness in a range of 5 to 50 mm and an area-weight of not...

20060201742 - Motorcycle exhaust system: A motorcycle has an exhaust system configured to extend below the engine while providing a sufficient length and a sufficient angle of through which the motorcycle can lean. A muffler unit comprises a first muffler connected with the exhaust pipe unit and disposed between the engine and a rear wheel....

20060196723 - Balloon speaker asembly: A balloon speaker assembly has a magnet and coil adjacent thereto connected with electrical signal input, and a supporting structure....

20060196723 - Balloon speaker asembly: A balloon speaker assembly has a magnet and coil adjacent thereto connected with electrical signal input, and a supporting structure....