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41. 发明授权

US4130175A Fluid-impervious acoustic suppression panel 失效
标题翻译：流体不透水声抑制面板
公开(公告)号：US4130175A
公开(公告)日：1978-12-19
申请号：US779776
申请日：1977-03-21
申请人： Horst W. W. Hehmann
发明人： Horst W. W. Hehmann
IPC分类号： G10K11/16 , G10K11/04
CPC分类号： G10K11/16 , Y10T428/24149 , Y10T428/24322 , Y10T428/31725
摘要： An acoustic suppression panel is provided with a perforated plate covering a layer of a bulk absorber. A flexible, fluid-impervious membrane is placed between the plate and the bulk absorber, and supported in a manner so as to permit the membrane to become essentially acoustically transparent. An acoustically hard backing plate is disposed adjacent the bulk absorber, the backing plate being provided with perforations to allow pressure equalization for flight applications. A facing sheet of sintered metal covers the perforated plate to provide an aerodynamically continuous flow surface for the plate which is highly resistant to foreign object impact.
摘要翻译：声抑制面板设置有覆盖体吸收体层的多孔板。柔性的，不透液体的膜被放置在板和块体吸收体之间，并以这样一种方式被支撑，以允许膜变得基本上在声学上是透明的。声学上坚硬的背板邻近体吸收体设置，背板设置有穿孔以允许飞行应用的压力均衡。烧结金属板的表面覆盖多孔板以提供用于板的空气动力学连续流动表面，其高度抵抗异物冲击。

42. 发明授权

US4111081A Low non-linearity factor sound attenuating laminate 失效
标题翻译：低非线性因子声音衰减层压板
公开(公告)号：US4111081A
公开(公告)日：1978-09-05
申请号：US646347
申请日：1976-01-02
申请人： Lonnie George Hilliard , Juris Verzemnieks
发明人： Lonnie George Hilliard , Juris Verzemnieks
IPC分类号： G10K11/168 , G10K11/04
CPC分类号： G10K11/168 , Y10T428/24149 , Y10T428/24826
摘要： A sound attenuating laminate exhibiting a relatively low change in acoustic resistance with respect to particle velocity is disclosed. The laminate includes a gas permeable mat of randomly arranged, small diameter filaments interleaved between two layers of resin impregnated, open weave web or cloth. A predetermined pattern of adhesive applied to the filamentous mat penetrates the mat to bond the laminate into an integral structure. The laminate can be easily fabricated to form sound attenuating panels having a variety of contours by curing the composite within a mold.

43. 发明授权

US4109108A Attenuation of sound waves in ducts 失效
标题翻译：声音波动的衰减
公开(公告)号：US4109108A
公开(公告)日：1978-08-22
申请号：US831289
申请日：1977-09-07
申请人： Brian Coxon , Hubert Geoffrey Leventhall
发明人： Brian Coxon , Hubert Geoffrey Leventhall
IPC分类号： G10K11/178 , E04B1/99 , G10K11/04
CPC分类号： G10K11/1782 , G10K2210/112 , G10K2210/3011 , G10K2210/3044 , G10K2210/3214 , G10K2210/3219
摘要： Apparatus for attenuating a sound wave propagating in a given direction along a fluid-containing duct comprises two sound sources spaced along the duct in a given direction; a sound detector between the two sources at a null point at which sound emanating only from the two sources substantially cancels; and means for utilizing the output of the sound detector including a phase-shifter and a frequency-sensitive amplifier to control the operation of the sound sources so that they emit sound in relative antiphase and at equal amplitudes and at such phases relative to the phase of the detected sound that the resultant of the sound radiations emitted in the given direction substantially attenuates the sound wave propagating along the duct.

44. 发明授权

US4106588A Mode canceling composite panel for greater than mass-law transmission loss in the principal speech bands 失效
标题翻译：在主要语音频带中大于质量传播损耗的模式消除复合面板
公开(公告)号：US4106588A
公开(公告)日：1978-08-15
申请号：US709822
申请日：1976-07-29
申请人： James A. Moore , Richard H. Lyon
发明人： James A. Moore , Richard H. Lyon
IPC分类号： E04B1/74 , E04B1/84 , E04B1/86 , E04C2/34 , E04B1/99 , G10K11/04
CPC分类号： E04C2/34 , E04B1/86 , E04B2001/747 , E04B2001/748 , E04B2001/8461
摘要： A composite panel is described in which the face sheets and the core have properties such that the panel produces a double wall resonance near the low frequency end of the principal speech bands and in which the panel produces interaction between the symmetric and antisymmetric mode in the principal speech bands, thereby providing greater than mass-law transmission loss over a substantial portion of the audio frequency spectrum. At frequencies above the principal speech bands effects are determined primarily by the properties of the individual face sheets.
摘要翻译：描述了复合面板，其中面板和芯具有使得面板在主要语音频带的低频端附近产生双壁共振的特性，并且其中面板产生主体中的对称和反对称模式之间的相互作用语音频带，从而在音频频谱的大部分上提供大于质量法的传输损耗。在主要语音频带以上的频率下，效果主要由个体面板的性质决定。

45. 发明授权

US4097633A Perforated, embossed film to foam laminates having good acoustical properties and the process for forming said 失效
标题翻译：穿孔压花膜具有良好的声学性质的泡沫层压板和形成所述的方法
公开(公告)号：US4097633A
公开(公告)日：1978-06-27
申请号：US743664
申请日：1976-11-22
申请人： Bruce E. Focht
发明人： Bruce E. Focht
IPC分类号： B32B5/18 , B29C59/00 , B29C69/00 , B32B27/00 , B32B37/00 , E04B1/84 , B32B3/24 , B32B5/32 , E04B1/86 , E04F13/00 , G10K11/04
CPC分类号： B32B27/00 , E04B1/8409 , E04B2001/8414 , E04B2001/8461 , E04B2001/848 , Y10T156/1023 , Y10T156/1039 , Y10T156/1041 , Y10T156/1057 , Y10T428/24331 , Y10T428/24496 , Y10T428/24504 , Y10T428/24512 , Y10T428/24521 , Y10T428/24537 , Y10T428/24545 , Y10T428/2457 , Y10T428/24694 , Y10T428/249988 , Y10T428/24999
摘要： An embossed film-to-foam laminate is provided having minute perforations through the film selectively distributed essentially along the sidewalls and valleys of the embossed pattern. The integrity of the laminated film material is retained on the crowns of the embossed patterned surface, since the perforations in the film material are mainly distributed on the sidewalls and valleys of the embossed pattern. The laminated product has a water-resistant and abrasion-resistant upper surface imparted by the film material on the crowns while the small perforations in the sidewalls and valleys permit sound to pass through the film and be exposed to the acoustical matrix of the open cell foam component of the laminate while impeding the penetration of liquids (e.g. water) through the film into the foam under the action of gravity. The film and/or the foam material are heated to supply adhesive material by melting or softening which serves to bond the film material to the foam.
摘要翻译：提供了压花的薄膜 - 泡沫层压板，其具有穿过薄膜的微小穿孔，所述薄膜选择性地基本上沿着压纹图案的侧壁和谷部分布。由于膜材料中的穿孔主要分布在压纹图案的侧壁和谷部上，所以层压薄膜材料的完整性被保留在压花图案化表面的顶部上。层压产品具有由冠状物上的薄膜材料赋予的耐水和耐磨的上表面，而侧壁和谷中的小穿孔允许声音通过膜并暴露于开孔泡沫的声学基质同时阻止液体（例如水）在重力作用下通过膜渗透到泡沫中。加热膜和/或泡沫材料以通过熔化或软化来供应粘合剂材料，其用于将膜材料粘合到泡沫上。

46. 发明授权

US4096756A Variable acoustic wave energy transfer-characteristic control device 失效
标题翻译：可变声波能量转移特性控制装置
公开(公告)号：US4096756A
公开(公告)日：1978-06-27
申请号：US812706
申请日：1977-07-05
申请人： Gerard Argant Alphonse
发明人： Gerard Argant Alphonse
IPC分类号： B06B1/06 , G01N29/24 , G10K11/04 , G01N29/00 , H01L41/10 , H03H9/26
CPC分类号： G01N29/2437 , B06B1/0614 , G10K11/04 , Y10S367/903
摘要： The effective thickness of a piezoelectric unit comprising a plurality of contiguous layers is varied by selectively short circuiting one or more layers with switch means. This varies the electro-acoustic properties at an operating frequency that is exhibited between the respective acoustic ports of the unit and an electrical circuit coupled across the electric port of the unit. Specific embodiments of such a unit, switch means and electrical circuit are useful in a control device for acoustic-wave propagating systems.
摘要翻译：包括多个连续层的压电单元的有效厚度通过用开关装置选择性地短路一个或多个层来改变。这改变了在单元的相应声学端口和耦合在单元的电气端口之间的电路之间出现的工作频率处的电声特性。这种单元，开关装置和电路的具体实施例在用于声波传播系统的控制装置中是有用的。

47. 发明授权

US4064961A Slanted cavity resonator 失效
标题翻译：倾斜谐振腔
公开(公告)号：US4064961A
公开(公告)日：1977-12-27
申请号：US673398
申请日：1976-04-05
申请人： Gudin Tseo
发明人： Gudin Tseo
IPC分类号： F02K1/82 , G10K11/172 , G10K11/04 , B64D33/06 , F02K1/26
CPC分类号： F02K1/827 , G10K11/172
摘要： A combination fan jet engine nozzle plug and muffler. The combination comprises a nozzle plug structure formed from a plurality of inwardly slanted spaced apart elements. The elements form outwardly open and inwardly closed cavities. The cavities' openings are covered by porous skin material attached to the elements.
摘要翻译：组合风机喷气发动机喷嘴塞和消声器。该组合包括由多个向内倾斜的间隔开的元件形成的喷嘴塞结构。这些元件形成向外开放和向内封闭的空腔。空腔的开口由连接到元件的多孔表皮材料覆盖。

48. 发明授权

US4056161A Sound attenuation material 失效
标题翻译：声衰减材料
公开(公告)号：US4056161A
公开(公告)日：1977-11-01
申请号：US627278
申请日：1975-10-30
申请人： Ralph W. Allen, Jr.
发明人： Ralph W. Allen, Jr.
IPC分类号： B29C43/28 , B29C43/48 , G10K11/16 , G10K11/04
CPC分类号： G10K11/168 , B29C2043/483 , B29C43/28 , B29C43/48 , B29K2105/06 , B29K2995/0002 , B29L2031/3041
摘要： The sound attenuation material disclosed in this application comprises, in its basic aspects, an outer layer, a sound absorption layer, and a sound barrier layer disposed between the sound absorption layer and outer layer and bonding them together.Over the years there have been developed a number of compositions, and laminated and coated articles, for use as vibration dampening and sound attenuation means. One such a sound and shock absorbing means is in the form of an adhesive tape and is shown in U.S. Pat. No. 3,217,832. The tape is manufactured by coating a woven webbing of plastic material such as nylon with a viscoelastic, tacky, filled composition comprising, inter alia, polybutene, petroleum oil, and barytes. The density of the composition is increased if vibration dampening is of prime importance and decreased for better sound absorption.In U.S. Pat. No. 3,265,154 there is disclosed an acoustical panel comprising a first and second layer of sound absorbing material of different densities, each comprising glass fibers bonded together. The outer layer is provided with dimples and serves also as a decorative layer in certain applications. A septum layer, e.g., of metal foil or plastic screen, is disclosed to be provided between the sound absorbing layers where it is desired to provide even greater sound absorption qualities to the sound absorption layers.An acoustic foam panel is disclosed in U.S. Pat. No. 3,196,975 comprising a flexible polyurethane foam having both open and closed cells. In some instances, as disclosed, a preformed plastic facing sheet is laminated to the acoustic foam layer.The invention disclosed in U.S. Pat. No. 3,298,457 is an acoustical barrier treatment. In accordance with that invention, a structural sheet metal member, which is subject to high intensity acoustic vibration from a source located to one side of the member, has applied thereto an adherent first layer of relatively stiff viscoelastic material having a Young's modulus of elasticity that is substantially less than that of the metal sheet. To the outer surface of the first layer is adhered a second layer of a relatively soft, compliant material having a modulus of elasticity that is substantially less than that of the first layer and having dispersed or suspended therein particulate material of high density.In U.S. Pat. No. 3,489,242 there is disclosed an acoustical panel comprising viscoelastic material filled with dense particulate material. The viscoelastic material can be any viscoelastic polymeric material capable of being compounded with the particulate solid as defined. There are a number of polymers disclosed including natural or synthetic rubbers such as nitrile rubber, vinyl or vinylidene chloride copolymers, and polyurethane elastomers, and EPDM polymers such as ethylene/propylene/nonconjugated diene in which the diene is 1.4 hexadiene, dicylopentadiene, 5 methylene-2-norbornene or 5-ethylidene-2-norbornene. The filled viscoelastic material is applied to a substrate to be damped and functions not only to dampen vibrations but also as a sound transmission barrier.The invention in U.S. Pat. No. 3,424,270 involves a viscoelastic sound-blocking material with filler of high density particles. The viscoelastic material can be, for example, a polyvinyl chloride plastisol. Among the fillers disclosed is barium sulfate (barytes). Various laminated products can be made wherein a dense viscoelastic cores is backed on one side with, e.g., mineral fibers or particle board, and on the other side with a thin facing of, e.g., vinyl film or decorative wood veneer. The structures provided are characterized, according to the disclosure, by excellent sound transmission loss.In U.S. Pat. No. 3,909,488, which issued on Sept. 30, 1975 and is assigned to Tillotson Corporation, the assignee of the present invention, there is disclosed a highly filled vinyl plastisol composition which, among other uses, can be employed to form tile such as wall tile used for noise abatement. The disclosure of this patent is herein incorporated by reference.While many of the sound attenuating materials disclosed heretofore, as exemplified by the above patents, provide satisfactory performance in certain applications, none of them, of course, meet the requirements of vibration dampening and sound attenuation in all applications. This is because the requirements differ depending upon the particular environment, e.g., airplane, factory building, office, car, truck, etc.In more recent years, protection against the effects of occupational noise exposure has become of even more critical concern. Rules and regulations on permissible noise exposure have been established by the Occupation Safety and Health Act of 1970 (OSHA). Accordingly, the demand for sound attentuation means to reduce noise levels in various environments to an acceptable level has increased since these standards were established.SUMMARY OF THE INVENTIONThe present invention is a sound attenuation material which comprises, in its basic aspects, an outer layer, a sound absorption layer, and a sound barrier layer disposed between the sound absorption layer and outer layer and bonding them together.The outer layer in a more preferred embodiment is provided with reinforcing material so as to make the outer layer more wear resistant for some applications. It can also be provided with decorative features, if desired.The sound attenuation material of this invention will be found useful in a variety of applications; for example, in trucks or other vehicles in the floor, and side or roof panels to decrease noise levels in the cab, and as a pipe wrap.The sound attenuating material in some applications can, if desired, be provided with suitable pressure-sensitive adhesive on the exposed, or free side, of the sound absorption layer so that the material can be applied to, and will remain in relatively permanent contact with, some desired surface.Quite advantageously, the invention provides a three prong approach to control of unwanted sound or noise: first, random incident sound is absorbed by the sound absorption layer; secondly, unwanted sound is blocked by the sound barrier layer and results in reduced sound transmission; and thirdly, vibration in surfaces to which the material is applied is reduced thereby tending to further help to lower sound levels in the environment in which it is used.A further advantage in the use of sound attenuating material according to the invention is that the outer layer thereof permits the exposed surface of the material to be washed clean. Moreover, it permits the material to be used in relatively dusty areas in that it aids to prevent, as does the sound barrier layer, dust from the sound absorption layer which over a period of time could adversely affect its sound attenuation qualities.
摘要翻译：本申请中公开的声音衰减材料在其基本方面包括设置在吸声层和外层之间的外层，吸声层和隔音层，并将它们结合在一起。

49. 发明授权

US4023642A Soundproof earcovers 失效
标题翻译：隔音耳罩
公开(公告)号：US4023642A
公开(公告)日：1977-05-17
申请号：US590094
申请日：1975-06-25
申请人： Bernard Korn
发明人： Bernard Korn
IPC分类号： A61F11/08 , A61F11/14 , A01F11/02 , G10K11/04
CPC分类号： A61F11/08 , A61F11/12 , A61F11/14
摘要： A pair of shells filled with foam and ear plugs to cover the ears and exclude all sound.
摘要翻译：一双充满泡沫和耳塞的外壳，覆盖耳朵，排除所有的声音。

50. 发明授权

US3966013A Multi-ply woven article having acoustical elements between double plies 失效
标题翻译：在双层之间具有声学元件的多层编织物
公开(公告)号：US3966013A
公开(公告)日：1976-06-29
申请号：US507771
申请日：1974-09-20
申请人： Donald M. Hatch , George D. Lee
发明人： Donald M. Hatch , George D. Lee
IPC分类号： E04B1/84 , E04B1/86 , G10K11/04
CPC分类号： E04B1/86 , E04B2001/8423 , E04B2001/8428 , E04B2001/8471 , E04B2001/8476 , Y10T428/24149 , Y10T428/24157 , Y10T428/24165 , Y10T428/24182 , Y10T428/24744
摘要： A multi-ply woven article has elements positioned within pockets formed by double plies of the article to provide the article with desirable acoustical properties as well as considerable strength and rigidity. The double plies may comprise a generally parallel pair of rib plies which extend between the opposite faces of the article in generally zig zag fashion to form a plurality of intermediate rib portions, or a pair of generally parallel, spaced apart face plies forming each of the opposite faces of the article, or both. Some of the pockets formed by the double plies are filled with acoustical elements having a selected number of holes of appropriate size so as to pass sound waves therethrough at a controlled rate, while still other pockets are filled with non-acoustical elements which are generally impervious to sound waves. By appropriate location of the acoustical and non-acoustical elements the article is effectively provided with a plurality of chambers which trap and dissipate sound wave energy entering from outside the article.
摘要翻译：多层编织物具有定位在由制品的双层形成的袋内的元件，以使制品具有期望的声学性质以及相当大的强度和刚性。双层可以包括大致平行的一对肋层，其以大致Z字形的方式在制品的相对面之间延伸，以形成多个中间肋部分，或一对大体上平行的间隔开的面层，形成每个物品的相对面，或两者。由双层形成的一些口袋填充有具有选定数量的适当尺寸的孔的声学元件，以便以受控的速率通过声波，同时还有其他口袋填充有通常不透过的非声学元件到声波。通过声学和非声学元件的适当位置，制品被有效地设置有多个室，其捕获并消散从制品外部进入的声波能量。

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