Acoustics – Sound-modifying means – Muffler – fluid conducting type
Patent
1985-09-18
1986-10-28
Bell, James J.
Acoustics
Sound-modifying means
Muffler, fluid conducting type
181256, F02M 3500
Patent
active
046193448
ABSTRACT:
A composite sound and heat insulating board comprising a base layer consisting of a compacted mat of filaments, and an additional layer of a material which differs in hardness than the compacted mat, wherein one surface of the base layer is securely attached to one surface of the additional layer. The compacted fiber mat may be composed of filaments of an organic composition, filaments of an inorganic composition, or partially of filaments of an organic composition and partially of filaments of an inorganic composition. The additional layer of the composite board is constructed of a naturally occurring or synthetic resin such as, for example, a relatively hard thermosetting or thermoplastic synthetic resin, or a relatively soft material which is lower in hardness than the compacted fiber mat. The composite board is advantageous when used in association with a source of heat and noise such as, for example, an internal combustion engine of a power driven vehicle.
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patent: 4201823 (1980-05-01), Russell
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Suzuki Shoji
Uesugi Naomoto
Bell James J.
Honda Giken Kogyo Kabushiki Kaisha
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