Acoustics – Sound-modifying means – Housing or enclosure
Reexamination Certificate
2010-01-27
2011-12-27
San Martin, Edgardo (Department: 2832)
Acoustics
Sound-modifying means
Housing or enclosure
C181S148000, C181S151000, C181S292000, C156S245000, C156S285000, C381S345000
Reexamination Certificate
active
08083024
ABSTRACT:
A speaker enclosure having a substantially seamless rigid outer skin, a middle sound absorbing layer, and a substantially seamless inner skin results in a lightweight speaker having sound absorbing characteristics. The speaker enclosure is comprised of two basic parts, a box section and a baffle section where each of these sections include a rigid outer skin, the middle sound absorbing layer and a seamless inner skin and are made according to the same method. The outer skin is formed from a layer of sheet molding compound, the middle sound absorbing layer includes pieces of honeycomb material, and the inner skin is formed from a layer of sheet molding compound. The layers of material are placed into a mold and then cured through vacuum bagging and heating thereby producing a strong, lightweight speaker enclosure made of materials which attenuate the transmission and retransmission of errant sound waves in the enclosure thereby reducing distortion of the sound signal produced by the speaker.
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Knobbe Martens Olson & Bear LLP
Martin Edgardo San
Southern California Sound Image
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