Matches 51 - 100 out of 158 < 1 2 3 4 >
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5858509 Attenuating vibrations in a mounting shelf for multiple disk drives  
A composite shelf in a shelf frame supports a plurality of disk drives and attenuates vibrations in the shelf. In the composite shelf, there is a double wall having an outer wall and an inner wall...
5823467 Passive damping wedge  
The passive damping wedge for reducing sound radiation from reinforced structures excited by fluid flow over the outer surface of the structure. The damping wedge is generally attached at the...
5814170 Manufacturing method for a wood composite layered material  
A multi-layered composite building material is provided which allows effective utilization of forest resources by using so-called low quality materials such as small-diameter wood, old wood, pieces...
5804775 Light weight shell acoustic enclosure  
A lightweight acoustic enclosure (1.1), for the reduction of noise transmission from monopole, quadrapole and higher order noise sources via airborne paths at frequencies lower than the approximate...
5771990 Shock absorbing foot means  
A shock absorbing foot adapted for supporting an audio equipment on a flat surface, including a base adhered to a flat surface and having a top screw hole, a mounting plate adhered to a bottom side...
5734133 Muffler for structure-borne noise of running wheels  
A muffler for structure-borne noise of running wheels of different diameters and/or different frequency spectrums of structure-borne sound vibrations has vibration absorbing elements in the form of...
5712447 Vibrationally and acoustically insulated structure  
A vibrationally and acoustically insulated structure includes a structure using enclosing a source of internally generated noise and vibrations. The structure further includes a vibration and...
5710396 Energy-dissipating vibration damping structure  
The invention is an improved apparatus for damping a wide range of oscillatory or wave motions in a plate, beam, shell or skin. The apparatus includes linearly-extending triangular hinged flexures...
5696360 Sound-absorbing motor mount for electric actuating drives in motor vehicles  
A motor mount is described for preventing the transmission of noisy vibration of the motor on vehicle body parts on which the motor is mounted by its motor housing. The motor housing is held by a...
5691037 Damped laminates with improved fastener force retention, a method of making, and novel tools useful in making  
The present invention relates to a vibration damped laminate articles having improved force (torque and/or pressure and/or stress) retention, a method of making one article type and novel tools...
5691516 Tunable vibration absorber  
A vibration absorbing device for a speaker enclosure is tuned upon installation to the speaker enclosure to achieve maximum attenuation of vibrations in a selected frequency range. The vibration...
5631451 Device for reducing noise produced by automotive vehicle components  
A retaining plate is disposed along and spaced apart by a predetermined distance from the surface of a noise source in an automotive vehicle component so as not to be displaced away from the...
5629503 Vibration damping device  
A vibration attenuating device for loudspeaker enclosures and other mechanical vibrating bodies includes one or more damping plates of viscoelastic material positioned to receive vibration energy...
5557078 Acoustical barrier  
An acoustical barrier having a central aperture that is defined by a flexible seal. The acoustical barrier has an inwardly directed flange circumscribing of the central aperture and spacing the...
5550335 Resonance absorber  
A resonance absorber for the damping of structure-borne vibrations has a number of freely swinging slats with different resonance frequencies. The slats are arranged on a common base which can be...
5531196 Oil pan noise enclosure and attachment system for same  
A vehicle oil pan assembly which is acoustically insulated for noise reduction includes an oil pan having a normal configuration with a base and enclosing sidewalls and further including a...
5528005 Oscillation absorber for the absorption of structure-borne sound  
The vibration absorber for the absorption of structure-borne sound has a wave conducting element made of mass-spring elements layered on top of each other and extending in the wave propagation...
5523530 Elastomeric acoustic insulator  
An acoustic isolator is incorporated between a noise generating device and a support structure, such as between a transmission housing and an airframe. The isolator has a first fitting which...
5506376 Apparatus for absorbing vibrations in an exhaust system of a vehicle  
The invention proposes an apparatus for damping or absorbing vibrations in an exhaust system of a vehicle, having two connection ends, at least one bellows and absorbing cushions, in which bellows...
5485053 Method and device for active constrained layer damping for vibration and sound control  
A new method and device for actively-controlled constrained layer (ACLD) treatment which can be used as an effective means for damping out vibrations and sounds from flexible structures are...
5453584 Acoustic insulation screen and its applications, particularly for protecting the payload compartment of a space launcher  
The invention relates to an acoustic insulation screen. The screen comprises a cushion (5) consisting of a flexible bag (4) inflated with a gas under pressure and allowing the gas to flow freely...
5446250 Fiberglass reinforced plastic damping material  
A method of forming a damping plate from a fiberglass reinforced plastic base plate and a layer of cushioning material by utilizing a restrainer plate on the other side of the layer of cushioning...
5444195 Sound insulating device  
A sound insulating device having a shock absorbing mechanism put between an upper material and a lower material, for absorbing vibrational impact sounds wherein the shock absorbing mechanism...
5396855 Underwater vehicle tailcone assembly  
There is presented an underwater vehicle tailcone assembly including a ford flange, a first tubular sheath extending rearwardly from the forward flange, and elastomer material bonded to inner and...
5331120 Method for acoustic absorption  
A method and article for damping acoustic energy caused vibrations comprises forming a damping surface comprising an alloy containing from about 13.5 to about 24.5 atom percent tin with the balance...
5308675 Flexible high damping structure  
A load bearing structural support for machinery which provides a mechanism or dissipating both mechanical and vibrational energy comprises a high damping flexible reinforcement of fiber preform...
5266856 Vibration reduction for electric motors  
A vibration reduction assembly for isolating the top cover from the machine, for use in combination with a dynamoelectric machine having a cover for guiding air into and out of the machine while...
5262599 Brake rotor silencer apparatus  
An elongate chain member having first and second ends is arranged for biased securement relative to the first and second ends for mounting peripherally about a brake rotor during a training...
5260522 Double-wall hollow body with interlayer and method for manufacturing same  
A double-wall hollow body comprises an inner hollow body and a cooperating outer hollow body. The outer hollow body is frictionally attached to the inner hollow body, and is radially spaced from...
5256223 Fiber enhancement of viscoelastic damping polymers  
A Viscoelastic medium with fibers dispersed throughout eliminates the need for a constraining layer, thus reducing the size and weight of a damping treatment.
5243153 Acoustical barrier with acoustical seal  
An acoustical barrier, an aperture and a pipe or cable passing therethrough wherein the aperture has a number of radially extending slits which define a plurality of radial sectors which also...
5193644 Pipeline vibration damper  
A vibration damper includes a suspended mass connected to a pipeline or similar structural member by a support ring and an assembly of interconnected, generally cylindrical damper members formed of...
5180298 Hydraulic pump with foamed elastomeric member in outlet chamber to reduce liquid-borne noise  
A noise-absorbing medium is provided as an insert within the inner volume of the outlet chamber of a displacement-type pump. In an axial-flow displacement pump, this is the chamber into which...
5110660 Rubber spring element  
In order to obtain a particularly soft spring characteristic the rubber spring element consisting of relatively hard material having good mechanical strength is traversed by cavities and hollow...
5033579 Sound-and/or vibration-damping coating, element provided with said coating and process for applying the latter  
A sound- and/or vibration-damping coating, which comprises a layer of a relatively hard substance (2) having pores, interstices, cavities (3) and/or hollows (12) containing a material (4) which has...
5005678 Method and apparatus for sensing and damping vibration  
A shape memory alloy used for both sensing and damping vibration of a structure. In one embodiment, a flat bar (12) is mounted from one end on its edge so that its other end vibrates from...
4976334 Noise reducing tool and method  
The present noise reduction system provides a tool and a method to dampen the vibration of sheet material such as a panel, a metal sheet or a skin while performing a manufacturing operation on it,...
4962826 Damping treatment for pipes and bodies  
A damping treatment for bodies where the temperature may rise above 150° C. consists of a number of stand-off cantilever, sandwich type dampers (1), consisting of a layer of viso-elastic material...
4953658 Seismic isolator  
A seismic isolator for absorbing earthquake vibrations is provided which comprises a laminated member arranged to be interposed between a structure and a foundation, the laminated member comprising...
4923034 Vibration-controlling member  
A vibration-controlling member is made by containing a flake-shaped powdery substance having vibration controlling action in a retainer adhered to one surface of a surface sheet. Any external shock...
4884656 Snap-in plate mount  
A mount capable of being pressed into an installed position in a hole in a plate. The mount has inner and outer concentric annular elements connected together by an intermediate flexible...
4860851 Dimensionally-recoverable damping article  
Acoustic damping is provided by a dimensionally-recoverable article, either in single layer or constrained-layer form. The single layer, or the damping layer of a constrained-layer article,...
4828202 Method and apparatus for wideband vibration damping of reinforced skin structures  
A method and apparatus for damping the vibration of a reinforced skin structure (e.g., the fuselage of an aircraft) over a wide frequency range (wideband) in order to reduce the vibration and...
4806953 Acoustic isolation timing belt pulley for drafting plotters  
Acoustic noises are suppressed in a large format drafting plotter (10) utilizing a paper drive motor (22) mechanically coupled to a paper drive shaft (20) by a geared timing belt (26) from the...
4778028 Light viscoelastic damping structure  
A light viscoelastic damping structure has a plurality of damping strips widely separated on the surface of a lightweight panel. The strips may be arranged parallel or at right angles to each...
4771860 Edge sealing means in a sound-absorbing cover for use in a sound-emitting body  
Adjustable packing strips (3, 4) are held on the inside of a carrying sheet (6) covered with sound-absorbing material (5), and are slidable by adjustment elements (7, 9), which can be actuated and...
4765436 Dry friction damper with damping force perpendicular to principal direction of a vibration  
In a body subject to a cyclic energy of such a nature as to cause the body to mechanically vibrate with a principal motion in a first direction, a dry friction damper has a first sliding element...
4734323 Vibration damping soundproof sheets for use in vehicles  
This invention is directed to a vibration damping soundproof sheet for use in vehicles, in which the surface of the soundproof layer is made flat irrespective of the or uneven configuration at the...
4727957 Rubber vibration isolator for muffler  
A rubber vibration isolator is used as a muffler hanger or muffler mount between a car body and a muffler to hang the latter from the former. The isolator includes a body made of rubber-like...
4724923 Vibration absorber with controllable resonance frequency  
Apparatus for reducing mechanical vibrations in a first part of a structure, in which these vibrations occur through its connection to a part of the structure which is the source of the mechanical...
Matches 51 - 100 out of 158 < 1 2 3 4 >