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6749929 |
Heat-insulating and soundproofing lining for an engine compartment of a motor vehicle
A heat-insulating an soundproofing lining for an engine compartment is disclosed, and a method of manufacturing the same, are disclosed. According to one embodiment of the present invention, the...
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6713150 |
Acoustically effective rear parcel shelf
The invention relates to a component part, especially a rear parcel shelf, and to a method for the production thereof, whereby the component part is provided with a honeycomb-like core layer ( 2 )...
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6677034 |
Aerogels, piezoelectric devices, and uses therefor
In its first aspect the invention provides an electromechanical acoustic transducer ( 5 ) which is resistively terminated at the rear with a closely-coupled sound absorber ( 7 ) made from an...
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6666297 |
Acoustic shielding article
An acoustic shielding article which includes a shaped thermoplastic element that has a metal inlay element fixedly attached thereto, is described. More particularly, the acoustic shielding article...
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6648100 |
Method of tuning acoustical absorption in a vehicle interior
A vehicle seat cover is designed to facilitate acoustic energy absorption by forming in the cover an optimal size and arrangement of perforations based on at target noise frequency range, the...
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6631785 |
Sound attenuating composite articles incorporating scrim material and methods of making same
Sound attenuating composite articles for use within vehicles as floor coverings and other interior trim components are provided. A sound attenuating composite article includes a damping layer,...
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6630222 |
Acoustic media
An acoustic medium for temporary acoustic treatment of a room is formed from one or more continuous curtains, preferably, with pleated first and second major surfaces. Each pleated curtain...
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6613424 |
Composite structure with foamed cementitious layer
The present invention provides for an acoustically absorbent porous panel that is both rigid and resistant to sagging caused by moisture. The acoustically absorbent porous panel is comprised of at...
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6601672 |
Double layer acoustic liner and a fluid pressurizing device and method utilizing same
This invention relates to a double layer acoustic liner for attenuating noise and consisting of a plurality of cells formed in a plate in a manner to form an array of resonators, and a fluid...
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6598701 |
Shaped microperforated polymeric film sound absorbers and methods of manufacturing the same
Shaped, microperforated sound absorbers and methods of making the same are herein provided. In one embodiment, the sound absorber is produced from a polymeric, typically plastic, film having a...
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6596389 |
Foamed composite panel with improved acoustics and durability
An acoustical panel formed from a fibrous, open-celled material comprised of up to about 50% by weight fibers, between about 3% and about 10% by weight binder, between about 20% and about 75% by...
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6595321 |
Floor mats having peripheral apertures with acoustic absorbing material
A multi-layer acoustically absorptive mat includes a base layer having a peripheral portion with a plurality of apertures formed in the peripheral portion in adjacent, spaced-apart relationship. A...
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6568135 |
Sound absorbing structure
A sound absorbing structure including a sound absorbing member, an air layer, and a resonant sound absorbing structure. The air layer is formed in the rear of the sound absorbing member. The...
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6569509 |
Ultralight, sound and shock absorbing component set
The invention relates to an ultralight, sound and shock absorbing component set comprising at least one base layer ( 2 ), an intermediate layer ( 3 ) and a covering layer ( 6 ). The intermediate...
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6550574 |
Acoustic liner and a fluid pressurizing device and method utilizing same
This invention relates to an acoustic liner for attenuating noise and consisting of a plurality of cells formed in a plate in a manner to form an array of resonators, and a fluid processing device...
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6536556 |
Noise reduction sandwich panel, notably for aircraft turbojet engine
Noise reduction sandwich panel, notably for an aircraft turbojet engine. In order to produce a noise reduction sandwich panel having a structure with two degrees of freedom, inserted separative...
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6524691 |
Sound absorbing-insulating structure for vehicles
A sound absorbing-insulating structure for vehicles includes a sound absorbing layer which contains cellulose fibers containing cotton yarns, pulp fibers, etc. and synthetic resin as principle...
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6498700 |
Damping material, damping method and disc drive
A damping material is made of a porous member having an absolute characteristic impedance value of not less than 800 kg/m 2 ·S in the frequency range of from 1.0 to 3.0 kHz. A damping method has...
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6457554 |
Acoustic absorber for absorbing noises in buildings
An acoustic absorber includes an enclosure having a front opening and having a chamber communicating with the front opening for receiving an acoustic absorbing member which includes a housing...
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6454048 |
Acoustic insulating vehicle component
A vehicle component has a vehicle body part in combination with an acoustic insulating structure which interacts therewith. The acoustic insulating structure has an outer covering having a shield....
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6450289 |
Noise attenuation device
A noise attenuation device having an array of quarter wave resonators which have varying mouth widths disposed adjacent an aperture or ventilation opening having a predefined width. The resonators...
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6443257 |
Acoustical panel having a calendered, flame-retardant paper backing and method of making the same
Disclosed is a multi-layered, substantially rigid and self-supporting acoustical panel. Preferably, the panel includes an acoustically absorbent semi-rigid core having a substantially continuous...
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6443256 |
Dual layer acoustical ceiling tile having an improved sound absorption value
An acoustical ceiling tile having an improved sound absorption value and having a dual layer of acoustical materials. The base mat layer has either no mineral wool or a low mineral wool content....
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6443258 |
Durable porous article of manufacture and a process to create same
An acoustically absorbent porous panel formed from a cured aqueous foamed cementitious material comprising on a wet basis of about 53% to about 68% by weight cement, about 17% to about 48% by...
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6439340 |
Acoustically treated structurally reinforced sound absorbing panel
An acoustically treated structurally reinforced sound absorbing panel having particular application for use at the inlet cowl of a jet engine to reduce engine noise leaked into the environment. The...
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6435303 |
Sound absorbing structure
A panel-like sound absorbing structure comprising an upper surface, a lower surface separated from said upper surface and a side surface connecting said upper surface to said lower surface. In the...
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6309026 |
Method and arrangement for sound-suppression in wheels
A method and a device for sound suppression, in wheels, of natural frequency sound originating from an air cavity which is inside the wheel between the tire and the rim, which includes at least one...
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6305494 |
Device for absorbing and/or damping sound waves
A device for absorbing and/or damping sound waves has a system for damping and/or silencing sound waves provided with a thin vibratory layer (1) on the side facing the sound waves. In order to...
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6296076 |
Acoustical insulating barrier and method of making the barrier
A needled composite acoustical barrier is provided. The barrier has a non-woven first layer (13) of needleable textile first fibers (13a); the layer (13) has a thickness of between about 0.01 inch...
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6290022 |
Sound absorber for sound waves
The broadband surface-like absorber of the invention is used, in particular, for absorbing troublesome airborne noise in the acoustic frequency range. The broadband surface-like absorber, which...
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6260660 |
Aircraft cabin interior noise treatment
A noise reducing blanket for use in an aircraft cabin for reducing acoustic noise transmission from an aircraft airframe to a cabin interior. The blanket includes a mass barrier portion, a foam...
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6257366 |
Exhaust device for a turbine engine
The invention relates to an exhaust device for a turbine engine, comprising a liner made of a fiber-reinforced ceramic matrix composite. The liner is preferably fitted some distance away from the...
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6248423 |
Acoustical and structural microporous sheet
A microporous sheet having both acoustical and structural functionality and a process for producing the sheet. Construction of the sheet requires, first of all, providing a sheet capable of...
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6209680 |
Acoustic diffuser panels and wall assembly comprised thereof
A panel which diffuses sound incident thereupon is provided having a rectangular perimeter and wedge-shaped configuration wherein the front surface of the panel is angularly disposed with respect...
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6202786 |
Absorber to absorb acoustic sound waves and method for its production
In a so-called "hollow chamber absorber" comprising chamber-shaped intermediate cavities (7) between a supporting body (1), spacers (2) and a covering layer (5) acting as a covering unit (11),...
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6196352 |
Sound attenuating relocatable partition wall panel
A sound attenuating relocatable partition wall panel. A substantially rigid first skin is secured, in a spaced apart relationship to a substantially rigid second skin generally opposite thereto....
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6196488 |
Sound-absorbing material and a cable reel including the same
A sound-absorbing material and a cable reel including the same are produced inexpensively and are able to attenuate sliding noise and vibration noise. A sound-absorbing material 20 is made of a...
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6186270 |
Layered sound absorber for absorbing acoustic sound waves
A layered absorber for absorbing acoustical sound waves comprising a plurality of layers with at least one layer being spaced apart from another layer by spacers, and at least one layer having a...
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6167985 |
λ/4 absorber with an adjustable band width
λ/4-absorber with an adjustable band width comprising at least one λ/4-resonator (2) whose opening region (4) comprises a perforated head part (5). A further development of this λ/4-absorber is...
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6152259 |
Sound deadening laminate
A noise-deadening laminate board configured for noise deadening having a bituminous layer more than 1 mm thick, bonded to one side of a thermal insulation layer of foam, felt or the like, and an...
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6145617 |
Ultra-light, multifunctional sound-insulating kit
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6123171 |
Acoustic panels having plural damping layers
An acoustic panel having at least two compressible, flexible, acoustic foam damping layers separated by at least two rigid layers. In one preferred embodiment, a first rigid layer has a second...
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6112851 |
Partition wall panel
In a partition wall panel of the present invention, a panel is formed by arranging a plurality of plates at an interval in the direction of the thickness of the plates and by joining the plates...
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6112849 |
Sound protection device for railroad track system
A sound protection device for reducing the propagation of airborne sound comprises a track system and an elastically deformable, low sound-protecting wall made of rubber or plastic and extending in...
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6109388 |
Sound absorbing mechanism using a porous material
A sound absorbing mechanism using a porous material has a sound absorbing plate of a thin plate porous material made by partially heating for welding plastic particles and a supporting member for...
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6102465 |
Noise insulating structure for automotive vehicle passenger compartment
A noise insulating structure for a passenger compartment of an automotive vehicle. The noise insulating structure comprises first, second and third sound absorbing materials which are disposed...
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6085865 |
Soundproofing panel and method of producing said panel
A soundproofing panel comprises a honeycomb core sandwiched between a solid skin and a porous skin, the cells of the honeycomb being divided in the direction of its thickness into at least two...
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6082489 |
Sound isolation plate structure
A sound isolation plate structure comprises a sheet of perforated board in which a plurality of holes are formed, and cylindrical portions provided on one surface side of the perforated board to...
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6035965 |
Sound absorbing body, sound absorbing board, and sound absorbing unit
To provide a sound absorbing structure having a superior sound absorbing characteristic and an external appearance of the sound absorbing structure which does not cause flicker or the like, by...
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6033756 |
Apparatus for and method of attenuating acoustic energy
A sound attenuating element is provided which comprises a closed cell foam layer (2) having a plurality of channels (4) formed therein. The element is, in use, placed adjacent a surface such that...
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