Disclosed is a system and method for decreasing airflow and improving ventilation within a tunnel, such as a railroad tunnel, including a path for movement of a vehicle (e.g., train) therethrough. The system has a plurality of air baffles mounted within the tunnel, each device comprising a body and a mounting device. Each mounting device positions each body inside and along the length of the tunnel between the entrance and the exit. The air baffles are configured to restrict airflow at least in part in a longitudinal direction of the tunnel, thereby increasing a relative difference between a vehicle speed and air speed in a tunnel annulus when the vehicle passes through the tunnel. The restriction (e.g., decrease) of airflow in the tunnel reduces the piston effect resulting from the vehicle or train passing through, thus reducing emissions and heat generated by the locomotives in the tunnel.

A speaker diaphragm of the present invention is formed by mixing polylactic acid as a plant-derived resin, bamboo fibers and a natural binder. It is thereby possible to realize a speaker diaphragm capable of obtaining sufficient sound velocity, while having low environmental load and high sound quality.

An aircraft nacelle including a pipe (32), a peripheral wall (34), a lip (36), and a front frame (38) connecting the peripheral wall (34) and the pipe (32) and forming with the lip (36) a space (50) in which the hot air that is provided for frost treatment can circulate, with the pipe (32) including a coating (44) for the composite material acoustic treatment, is characterized in that the nacelle includes at least one element (52) made of a heat-conducting material inserted between the lip (36) and the pipe (32) ensuring the continuity of the aerodynamic surfaces of the lip (36) and the pipe (32) and the propagation of heat from the space (50) toward the rear of the nacelle, whereby the at least one element (52) includes a coating (54) for acoustic treatment that is made of a heat-resistant material.

A fluid line includes a resonator having an inner part and a blow-molded outer part defining an inner surface. The inner and outer parts are fixedly connected. The inner part is an injection-molded part having first and second radial collars spaced axially apart from each other. The inner part defines a radial circumference with a plurality of orifices formed therein. The inner and outer parts are axially one within the other so that there is no throughflow of secondary air between the first and second radial collars and the inner surface of the outer part. The inner and outer parts have a common end whereat they are airtightly connected to each other. The inner part, the radial collars and the inner surface of the outer part conjointly define two resonant chambers operatively connected to fluid in the fluid line via the orifices.

A silencer (1) for an exhaust gas installation of an internal combustion engine, particularly of a motor vehicle includes a housing (2), with a circumferential shell (3) closed in the peripheral direction (5) and an end base (6) at each of two longitudinal ends, spaced apart in an axial direction (4). A silencer insert (15) is arranged in the housing (2) and has an inlet pipe (8) for exhaust gas and an outlet pipe (10) for exhaust gas. The shell (3) has, in the peripheral direction (5) has at least one inlet shell-segment (11) and one outlet shell-segment (12). The inlet shell-segment has at least one inlet opening (7), into which such an inlet pipe (8) is inserted from the inside. The outlet shell-segment (12) has at least one outlet opening (9) into which such an outlet pipe (10) is inserted from the inside.

The attenuation and other optical properties of a medium are exploited to measure a thickness of the medium between a sensor and a target surface. Disclosed herein are various mediums, arrangements of hardware, and processing techniques that can be used to capture these thickness measurements and obtain dynamic three-dimensional images of the target surface in a variety of imaging contexts. This includes general techniques for imaging interior/concave surfaces as well as exterior/convex surfaces, as well as specific adaptations of these techniques to imaging ear canals, human dentition, and so forth.

A honeycomb structure dial includes cells in which septums are located to provide acoustic dampening. The cells are formed by at least our walls wherein at least two of the walls are substantially parallel to each other. The septums include warp fibers and weft fibers that are substantially perpendicular to each other. The septums are oriented in the honeycomb cells such that the weft fibers and/or warp fibers are substantially perpendicular to the parallel walls.

Measurement data is received from first and second seismic sensors, where the first and second seismic sensors are oriented in opposite directions. Each of the first and second seismic sensors has a sensing element responsive to pressure and particle motion. The signals can be combined to remove the particle motion component of the measurement data and obtain pressure-only data. Alternatively, the signals can be combined to deghost the received measurement data.

A bone conduction hearing aid device comprising a vibrator configured to vibrate in response to sound signals received by the device. The device further comprises a housing mass forming a housing for one or more operational components of the device, wherein the housing mass is attached to the vibrator so as to move in response to the vibration. The device also comprises a coupling configured to attach the device to a recipient so as to deliver the generated mechanical to the recipient's skull.

A directable sound-absorbing panel comprising a sound-absorbing panel, a fixing member which can be fixed to said sound-absorbing panel, an arm and an articulated joint between said fixing member and said arm, is described. An assembly of directable sound-absorbing panels is also described, said assembly comprising a plurality of sound-absorbing panels, a corresponding plurality of fixing members, a corresponding plurality of arms, a corresponding plurality of articulated joints between each arm and each fixing member, and a fixing bar to which at least a part of said plurality of arms is fixed.

An image forming apparatus includes a drive source configured to drive a member for forming an image on a recording material, a frame of the image forming apparatus including a planar portion on which the drive source is mounted, wherein a plurality of through holes is formed on the entire planar portion of the frame, and a sheet member configured to cover at least a portion of the plurality of through holes.

Systems and methods for optimizing low frequency output of marine sources are described. The marine source arrangements and associated methods disclosed herein seek to fully frequency lock bubbles emitted by airguns in close proximity to one another. In this manner, larger effective bubble volumes can be achieved, thus increasing low frequency output.

A device and attendant method to assist the hearing of a user by being removably connected to and disposing a user's ear in an enhanced hearing orientation. The device includes an elongated base, which may be disposable, and has a sufficient length to be disposed in an operative position behind the user's ear. Opposite ends of the base include an adhesive material secured to a common side thereof, wherein different ones of said opposite ends are respectively disposed and maintained in confronting engagement with a rear surface of the ear and adjacently disposed portion of the user's head. The base further includes biasing capabilities disposed and structured to exert a sufficient, forwardly and outwardly directed force on the user's ear to dispose and maintain it in the enhanced hearing orientation, when the base is in the operative position.

The present invention relates to an assembly structure of a diaphragm for a microspeaker. The present invention discloses a bonding structure of a diaphragm for a microspeaker, the boding structure comprising: a suspension including a central portion, an outer peripheral portion, and a connecting portion connecting the central portion and the outer peripheral portion; and a side diaphragm including an inner peripheral portion and an outer peripheral portion, which are attached to the central portion and outer peripheral portion of the suspension, respectively, and a dome portion, which projects between the inner peripheral portion and the outer peripheral portion, wherein the suspension and the side diaphragm are attached by thermal compression.

A protective enclosure for an electronic device can include a waveguide to direct and enhance sound waves emanating from a speaker of an electronic device when installed in the protective enclosure. The waveguide can include a first end and a second end. The first end of the waveguide can be located proximate the speaker of the electronic device. The waveguide can increase in cross-sectional area between the first end and the second end.

A coating composition has a natural fiber-bearing dry matter mixture, as well as cellular plastic grains, mixed into water. By spreading this composition onto any base, particularly by spraying, and by hardening it, particularly through drying, the coating is formed from the coating composition, which coating provides extremely good acoustic properties. If a special fiber base plate based on chemical pulp is used as the base of the coating, the plate-like acoustic element is obtained.

There is provided a sound absorbing member lamination structure in which the functions by the sound field adjustment can effectively be achieved by preventing the sound reflection against an intension of design in a boundary between the sound absorbing member and the other layer, when the sound absorbing member and the other layer are laminated into a united body. When the sound absorbing member and the other layer are placed in a stacked state, they are bonded with the use of a pressure-sensitive adhesive, so that the sound absorbing member and the other layer are combined together, with the pressure-sensitive adhesive kept uncured in a stacked state of the sound absorbing member and the other layer. Thus, such an uncured pressure-sensitive adhesive does not become a reflection portion of a sound. It is therefore possible to cause the sound to pass through appropriately the boundary between the respective layers.

The invention relates to a loudspeaker mounting and adjustment system and method for installing and operating a professional audio system used in a stadium, concert hall or the like. The system comprises a vertical array of loudspeaker cabinets that can be suspended from a ceiling and that enables the horizontal and vertical angle of the sound dispersion field to be adjusted remotely and/or automatically while the system is suspended. Each loudspeaker cabinet is connected to a vertically adjacent loudspeaker cabinet via a pair of levers located on either side of the cabinet that control the angle between adjacent loudspeaker cabinets. A linear actuator is connected to each lever for controlling the lever position. Each loudspeaker cabinet also comprises a waveguide with at least one actuator for modifying the waveguide angle and thus the horizontal angle of the sound dispersion field.

A protective enclosure for an electronic device can include a waveguide to direct and enhance sound waves emanating from a speaker of an electronic device when installed in the protective enclosure. The waveguide can include a first end and a second end. The first end of the waveguide can be located proximate the speaker of the electronic device. The waveguide can increase in cross-sectional area between the first end and the second end. The second end of the waveguide can be located proximate a front surface of the protective enclosure and can direct sound waves toward a user of the electronic device.

A sound suppressor device for an air drying unit of a compressed-air supply system having a sound suppressor housing on which is arranged an inlet opening for the supply of condensate-laden compressed air to be discharged from the air drying unit and at least one outlet opening for the discharge of the condensate-laden compressed air to the outside, wherein the inlet opening issues into at least one pre-chamber of the sound suppressor housing, which pre-chamber issues into post-chambers which are connected in parallel and which are arranged around a heating rod arranged centrally in the sound suppressor housing.

Described embodiments relate to a method of manufacturing a sound absorption material. The method comprises: forming a low density fibrous web to act as porous bulk absorber, the fibrous web containing a proportion of bi-components fibers, each bi-component fiber having a core material and a sheath material around the core material; applying a thin facing later to the low density fibrous web, wherein the facing layer is adhesively compatible with the sheath material; heating the fibrous web to a temperature sufficient to soften the sheath material of at least some of the bi-component fibers; and pressing the facing layer and fibrous web together under low pressure such that at least part of the facing layer contacts the softened sheath material of at least some of the bi-component fibers to form an adhesive bond between the facing layer and the fibrous web.

An acoustic damping article includes a substrate, wherein the substrate has a surface area S. The acoustic composition further includes a polymer resin. The polymer resin coats partially the surface area with a set of areas. The ratio of the coated areas over the surface area S is less than 1 and the polymer resin coverage is not greater than about 500 g/m2.

An adaptive speaker panel is provided. The speaker panel can have a speaker opening and a pair of concentric sealing ribs proximate to the speaker opening, the pair of sealing ribs having a first sealing rib and a second sealing rib towards a center of the speaker opening from the first sealing rib. The first sealing rib is first sealing rib dimensioned to seal against a first speaker basket and the second sealing rib dimensioned to seal against a second speaker basket that is smaller than the first speaker basket. Also, the first sealing rib and the second sealing rib are operatively arranged such that without modification to the speaker panel the first speaker basket or the second speaker basket can be attached to and sealed against the panel.

A sound absorbing body includes a fibrillated part fibrillated into fiber form, and an unfibrillated part that is not fibrillated into fiber form. The unfibrillated part is dispersed inside the single sound absorbing body.

A printing device includes a case, a printing unit arranged inside the case, and a sound absorbing body arranged inside the case. The sound absorbing body has parts with different densities including a dense part with a higher density and a non-dense part with a lower density. The non-dense part includes a fibrillated part that is fibrillated into fiber form, and an unfibrillated part that is not fibrillated into fiber form.

A sound absorbing body includes parts of different densities including a plurality of non-dense parts of lower density and a plurality of dense parts of higher density. The non-dense parts and the dense parts are alternately laminated obliquely.

A hybrid silencer in a fuel cell system includes an expansion chamber connected to a predetermined apparatus of the fuel cell system, where the expansion chamber reduces acoustic noise of a fluid discharged from the predetermined apparatus, a water-absorber disposed inside the expansion chamber, where the water-absorber absorbs a liquid component of a fluid which flows into the expansion chamber; and a perforated silencer which discharges the fluid from which the liquid component is removed by the water-absorber while reducing acoustic noise of the fluid discharged therefrom.

There is provided a method for optimizing performance of a multi-transducer earpiece, where the multi-transducer earpiece includes a perpendicular flange that partitions the cross sectional area of the acoustic delivery channel in a manner where mixing of signals from both the high frequency transducer and the mid/low frequency transducer is carried out in the ear canal of a user during reproduction of audio signals.

A gundog training tool prevents gun shyness by gradually allowing a pup to adapt to the sound of a gunshot. A pop gun shoots treats upon creating a simulated gunshot so that the dog grows used to the sound of a gunshot and creates positive reinforcement rewarded by the treat. As the pup learns, a charge in a housing is introduced to provide a simulated gunshot that expels a treat that trains the dog to feel excitement at the sound and smell of a gunshot. The size of the charge adjusts to create louder simulated gunshots as the pup learns so that the pup is prepared for introduction to actual gunshots, such as from a shotgun shooting at a bird.

Tethering stakes of the nature intended to be pounded flush with or below ground level. Certain of the tethering stakes include a cap on the pounding end which is adapted for ease of placement and release of a tethering line. Accordingly, the tethering line can be removed from the stake when it is to be pounded into the ground and then engaged with the stake only when tethering is desired. Certain of the embodiments include caps having uniquely shaped apertures for securing the tethering line. Another includes an aperture in communication with an aperture in the stake such that a lead cable or the like may be moved out of the way when the stake is pounded into the ground and may be fully received within the stake when tethering is not desired. Another embodiment employs a coupler passing through an aperture directly beneath the pounding surface to facilitate ease of attachment and removal of the tethering line.

A tethering stake includes a rod having a point at one end thereof and a driving cap at an opposite end. A collar is fixed to the rod adjacent to and spaced from the driving cap, thus providing a neck to receive a tether line or chain. A cap cover is slidingly received upon the rod and is adapted to be selectively engaged with the collar. The cap cover includes a central circular aperture with a radial slot extending therefrom. The centrally positioned aperture and slot allow the cover to assume a position substantially parallel to the rod during shipment and storage, while allowing it to take a position substantially orthogonal to the rod when the rod is driven into the ground.

A modular fire prevention flooring system includes a plurality of fire prevention flooring planks. Each plank is generally tubular and forms a drain channel. Fluids spilled onto the upper surface of the flooring system may drain through a plurality of drain holes formed in the upper surface of the planks. The planks may further include a metal filler positioned within the drain channels to stop combustion of burning fluids spilled into the drain channels. The metal filler may break up burning liquids and remove heat therefrom. In some embodiments, a purging fluid may be flowed through the planks to purge any spilled fluids therefrom.

A rat guard and method utilizing a flexible shield affixed to a plastic sheath positioned on a mooring line to prevent entry onto or exit from the ship by vermin. An electric grid is positioned on an insulated pad on the sheath which is electrically connected to the shield for receiving power from an acoustical generator also connected to the shield and spaced therefrom. The acoustical generator directs ultrasonic acoustic signals in a variable frequency range toward the shield to frighten rats or other vermin therefrom. Should the acoustical signals not deter the vermin, the electric grid will shock any vermin making contact therewith to cause harm and frighten. The shield provides another obstacle to prevent advancement and is affixed to the sheath on the mooring line. The shield is flexible and remains in place during high winds and other adverse weather conditions.

The present invention is directed towards an absorbent composition and its method of production and use. More specifically, the present invention relates to an absorbent composition comprising a liquid absorbing material, at least one alkaline earth metal peroxide, and an acidic material. The acid maintains a high hydrogen peroxide release profile under acidic conditions, such that the composition is found surprisingly effective in mitigating fecal odor.

Animal litter having up to a sixty percent reduction in bulk density can be produced by combining flat-shaped cellulosic materials and sodium bentonite clay. Not only is the resulting litter lighter, but it also maintains a high clump strength as compared to clay-based animal litters that contain greater than ninety percent by weight sodium bentonite clay.

Animal keeping installation comprising a floor (11) provided with a mat (12) on which the animal treads when setting foot on the floor (11) and which mat (12) is arranged to be intermittently propelled by a drive roll (13) placed internally in relation to the mat (12), wherein the drive roll (13) is connected to and mounted in bearing journals (15) for rotation about its center axis in a pendulum (14) which allows the drive roll (13), on the one hand, to bear against the inner side of the mat (12) and, on the other hand, to be released from the said bearing contact in dependence on the position of the pendulum (14), and wherein the drive roll (13) is connected to a drive member (18, 19, 51, 62) for driving the roll (13) at least into a position where the drive roll (13) bears against the mat (12).

An animal run line cornering mechanism with a corner component and leash component. The corner component is dumbbell shaped with a narrow body, a ball at one end with an aperture for the line, and a support attachment. The leash component has a tubular line ring with a shaped gap so that it appears C-shaped in end view, and leash ring attached to the line ring. The gap is wider than the corner component body and narrower than the line so that it is captured by the line. The line ring diameter is larger than the corner component ball and line diameters so that it moves freely along the line. The gap is defined by opposed edges of the line ring walls that taper to a rounded apexes. When the body hits the a tapered line ring wall, the body slides along the wall until it slides through the gap.

The present invention relates to a system and method of managing a group of dairy animals. More particularly, the invention relates to measuring one or more milk parameters, comparing this parameter to a criterion, and allowing an animal access to a pasture based on this comparison. The milk parameter is related to the composition of milk obtained from a dairy animal in as far as the composition is defined by at least one of the amount of protein and the energy intake of the dairy animal. The measured milk parameter is, for example, urea. Access to the pasture will be completely or partly blocked for a dairy animal having a high content of urea. This dairy animal is thus prevented from taking in an undesirably large amount of protein.

A teat cup has a nozzle in a head portion of a flexible liner of the teat cup for delivering fluid internally of the teat cup. The nozzle is directed so as to discharge fluid towards the discharge end of the teat cup. When milking is terminated, treatment fluid is injected through the nozzle into the head portion of the liner just prior to and/or as the teat cup is being withdrawn from the teat and, the teat cup wipes the fluid down the teat so as substantially to coat the teat. When the teat cup falls into an inverted rest position, after take-off, the interior of the liner may be flushed and dried with disinfectant, water and compressed air discharged upwardly into the liner by the nozzle. The discharge end of the teat cup may be fitted with a shut-off valve which can be actuated to prevent ingress of treatment and cleansing fluids into the milk tubes during the treatment and cleansing cycle.

A system for creating a plurality of sheltered stalls around feeding ports of a hummingbird feeder. The sheltered stalls may be formed by generally V-shaped members having opposed curved wings, one stall being formed beneath abutting wings of two abutting generally V-shaped members. The generally V-shaped members may be supported on mounting hooks which are either integral with or removable from the hummingbird feeder. The sheltered stalls and mounting hooks are red. The system may include the hummingbird feeder. The system deters dominant males from preventing use of the hummingbird feeder by competing hummingbirds.

A method for enhancing the production of aquatic organisms under cultivation, including the steps of exposing the aquatic organisms to a submerged illumination source inside water of a rearing unit; and maintaining illumination in the rearing unit for a rearing period.

This invention describes a collagen fiber reconstituted rawhide useful in the production of pet chews, and a method for making the same. Beginning materials include animal skins with hair, depilated limed splits and leftovers from the manufacture of rawhide pet chews. The materials are pretreated, ground, subjected to acid treatment to swell and separate the collagen fibers that comprise the animal hide, further ground into pulp, vacuum filtered, mixed with a dehydration agent that chemically shrinks the expanded fibers, drained, formed and dried into sheet and finally exposed to a cross-linking agent to increase the adhesive strength of the end product. Edible materials, including meats, may be added to the solution prior to draining, to enhance the nutritional value and palatability of the final product, and the reconstituted rawhide sheets may be bleached for appearance.

A multi-reel, line-handling apparatus can include a housing, a shaft located within the housing, the shaft defining a shaft axis, a first reel located within the housing, the first reel rotatably mounted to the shaft about a first reel axis angled with respect to the shaft axis, and a second reel located within the housing, the second reel rotatably mounted to the shaft about a second reel axis angled with respect to the shaft axis. The first reel and the second reel can be rotatable with respect to the housing about the shaft axis.

A system and method for monitoring and mitigating leakage currents is disclosed. The data acquisition system records data from multiple monitoring locations over extended periods of time to identify stray voltage and/or leakage currents present at the monitoring location. The data is processed to identify trends in the stray voltage and/or leakage currents and to suggest methods for mitigating the same.

The present invention relates to an aquarium cleaning apparatus, systems and methods for removing debris from the aquarium, and in particular, a self-contained cleaning apparatus that utilizes a siphon effect created by pouring water in an aquarium tank and/or pulling water out of an aquarium tank, such as via a vacuum. In a preferred embodiment, the siphon operation occurs because of the difference between the water level of the aquarium tank and the vertical height of a spout attached to the top of a vertical tube. Therefore, it is not necessary for the user to immerse their hands in the aquarium water to operate the cleaning device.

The present invention relates generally to an ultrasonic stimulating pet toy and, more specifically, to a mouse-like pet toy comprising a sound chip assembly that emits ultrasonic vocalizations that replicate those studied in mice. The instant abstract is neither intended to define the invention disclosed in this specification nor intended to limit the scope of the invention in any way.

A multi-material pet toy includes a first member having an attractant for making the multi-material pet toy interesting to a pet and a second member for protecting the first member to lengthen a serviceable life of the first member. The toy may be configured so that the first member includes a sound-producing member for making a noise without air movement passing through the sound-producing member, and the second member includes a protective member for protecting the sound-producing member. The toy may also be configured so that the first member includes a mouth-feel member for providing attraction for the pet with the noise of air movement passing through the mouth-feel member, and the second member includes a protective member for protecting the mouth-feel member.

A windowed muzzle has left and right side sections, a lower section, an upper section and a rear section. A left window is in the left side section and a similarly configured right window is in the right side section. A left flap is configured and sized to cover the left window and a similarly configured right flap is configured and sided to cover the right window. A securement assembly selectively retains each flap in a raised orientation above the window or in a lowered orientation covering the window. A brushing assembly has a flexible strap coupled to the lower section. The brushing assembly includes a toothbrush removably coupled to the flexible strap.

An apparatus for milking an animal and provides a milking parlor includes first and second robotic manipulation devices and a plurality of milking stalls provided on a platform moveable relative to the robotic manipulation devices. The robotic manipulation devices are positioned so that each of the robotic manipulation devices is able to simultaneously service two neighboring milking stalls on the platform.

An elongate rectangular cultivation box having an open top, is configured so as to allow an outer tank, which serves as a cultivating water storage part, and an inner tank, which serves as a receptacle for bivalves (benthic organisms) S that are to be cultivated, to be both combined and separated. A gap that serves as a water supply opening and a gap that serves as a space in which sediments can accumulate on the bottom of the outer tank are defined when the inner tank is accommodated in the outer tank. Water passage holes are provided in the bottom of the shellfish receptacle (inner tank) and a mesh filter such as netting is stretched across the top face of the bottom. The cultivation boxes are arranged in a vertically stacked manner, with the front portions and rear portions thereof staggered so that cultivation water W that overflows over a front ledge of a shellfish receptacle flows downward into the supply water storage part of a lower cultivation box.