Abstract: A multi-platform, ergonomic workstation that is portable and capable of attaching to different types of exercise equipment, which allows the user to comfortably type, work, or conduct business for extended periods of time while using the exercise equipment. The workstation allows the user to comfortably type or perform work requiring fine motor control while also using the exercise equipment with limited vibration.

Abstract: A printing apparatus includes a recording unit configured to record an image on a medium, a housing configured to accommodate the recording unit, and a cover provided at the housing and configured to be opened and closed, the cover being configured such that an interior thereof is visible, in which the cover includes a rectangular frame having two long side parts and two short side parts, and a light transmissive plate that is transmissive and attached to the frame, and each of the long side parts is a hollow structure with a metal material.

Abstract: A portable printing cabinet having a housing with a substantially enclosed interior and an opening formed in a side surface thereof, a printing device located within the interior of said housing, and a paper tray positioned outside of the housing and in communication with the opening of the housing is provided.

Abstract: In order to provide a processor in which a reception space occupied by a body thereof may be decreased when it is not used, a container may be mounted on and detached from the body without being hindered, visibility of an inner portion of the container may be improved, and noise generated at the time of an operation may be decreased, a soundproofing cover is mounted on the body so as to cover the container, is detachable from the body to be completely separated from the body, and has an internal space closed by closure of an opening of one end thereof by the body. One end portion of a first vacuum tube is disposed to be exposed to an upper surface of the body and is connected to one end portion of a second vacuum tube.

Abstract: A portable printing cabinet includes a housing having a substantially enclosed interior. A printing device is located within the interior of the housing. A paper tray is located on an outer surface on an outside of the housing, and a paper guide extends from the printing device to the paper tray and is configured to transfer printed paper from the printing device within the housing to the paper tray at the outside of the housing.

Abstract: An electronic device comprises: a shielding object that is arranged at least in a plurality of directions and shields noise; and a Helmholtz silencer that is arranged in a direction where the shielding object does not exist, the shielding object and the silencer being arranged with respect to a noise source causing noise such as a driving source that is arranged inside an apparatus body, wherein a neck portion of the Helmholtz silencer is directed to the noise source, a plurality of such Helmholtz silencers are provided to correspond to at least two kinds of frequencies, and installed number of the Helmholtz silencers corresponding to at least two kinds of the frequencies respectively, is made different depending on a distance from the noise source.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: An active noise control (ANC) system may be implemented to both sides of a fan, such that both directions of the noise emitting are treated to reduce the overall noise. The impact on airflow is minimal, and the technique is very effective in a broad range of low frequencies. Passive sound-absorbing materials may be included for attenuation of high frequencies. The resulting quiet fan produces a low level of noise compared to any other device based on fan, which produces the same capacity of airflow. The quiet fan may be incorporated in any mechanical system which requires airflow induction such as: computers, air conditioners, machines, and more.

Abstract: Apparatus and method for attenuating sound generated by machinery is disclosed and is particularly relevant to noises and sounds emanating from domestic appliances such as dishwashers. The enclosure of the dishwasher is lined with a sound absorbing material which includes holes or openings therein to permit the extension of portions of the appliance's apparatus or equipment mounted within the enclosure to be positioned closer to the interior surface of the enclosure than to an interior surface of the absorbing material. Caps are formed of material having the same recipe as the absorbing material but having a different density and which are compressed, heated, and subsequently placed over said openings to completely enclose the machinery and equipment within the appliance enclosure.

Abstract: 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.

Abstract: 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.

Abstract: An exemplary embodiment of the present invention provides a silencer. The silencer includes an enclosure with a first airflow path configured to allow air to pass through the enclosure and attenuate noise entering the enclosure. The enclosure also includes an opening configured to provide a second airflow path if the first airflow path is obstructed.

Abstract: A noise attenuating method, and a system thereof, for controlling acoustical noise in an electronic equipment enclosure is disclosed. The noise attenuating system includes one or more noise attenuating inserts configured to be removably attached to the electronic equipment enclosure so as to block noise from at least one electronic device contained in the electronic equipment enclosure and to channel an airflow from an inlet point to one or more outlet points of the electronic equipment enclosure. The method includes arranging one or more noise attenuating inserts within an electronic equipment enclosure such that the noise attenuating inserts simultaneously block noise from at least one electronic device contained in the enclosure and channel an airflow path circulating therein.

Abstract: An acoustically absorptive apparatus is provided which includes an acoustically absorptive panel and an attachment mechanism. The acoustically absorptive panel is configured to reside along a side of an electronics rack, and includes a multilayer structure to attenuate noise. The attachment mechanism slidably mounts the acoustically absorptive panel to the electronics rack and facilitates sliding of the panel relative to the rack between retracted and extended positions. In the refracted position, the panel is disposed along the side of the rack, and in the extended position, the panel extends beyond a front or back edge of the electronics rack to facilitate attenuating noise emanating from the rack or an aisle alongside a row of multiple racks. In addition, the acoustically absorptive panel hingedly couples along a vertical edge to the attachment mechanism such that the panel is also rotatable outward away from the side of the electronics rack.

Abstract: An exemplary embodiment of the present invention provides a computer system. The system includes an enclosure configured to house a plurality of electronic devices. The system also includes a fan coupled to the enclosure and configured to provide a flow of cooling air through the enclosure to cool the electronic devices. The system also includes a first airflow path configured to allow the cooling air to exit the enclosure and attenuate noise generated in the enclosure. The system also includes an auxiliary outlet configured to provide a second airflow path if the first airflow path is obstructed.

Abstract: In an image forming apparatus, a frame as an interior member is provided so as to oppose an exterior cover as an exterior member for controlling noise from an apparatus main body. An opening that is made up of a number of aperture regions is provided for allowing sound that is radiated to the exterior cover and reflected, to transmit toward the apparatus main body. By providing an opening in the frame or the like, it is possible to reduce noise energy radiated outside the apparatus in a simple manner.

Abstract: A device (10) for reducing noise and heat emissions from a laboratory instrument in a laboratory, comprising a casing (20) with sound-absorbing walls (240), wherein the casing (20) forms an interior space (210, 220) for accommodating the laboratory instrument. At least one of the sound-absorbing walls (240) has an air inlet (30). The device (10) further has a flue (40) arranged on one of the sound-absorbing walls (240), so that the interior space (210, 220) of the casing (20) can be vented via the air inlet (30) and the flue (40). During operation of the laboratory instrument situated in the interior space (210, 220) of the device (10), the sound generated by the laboratory instrument is absorbed by the walls, so that essentially no noise, or only significantly reduced levels of noise, generated by the laboratory instrument can escape the device (10).

Abstract: A vented cover includes a pair of cross-flow ventilation ducts each including an acoustic noise reduction lining. The ducts are “cross-flow” in that they cross and bypass one another. The cover is affixed to an enclosure containing components of a computer system and abuts against a panel of the enclosure having an airflow aperture. An air moving device (AMD) passes air through the enclosure from the ducts if the cover is an intake cover, and/or into the ducts if the cover is an exhaust cover. The ducts increase the air path length, and the acoustic absorbing surface, thereby increasing acoustic attenuation. Airflow resistance is reduced by reducing surfaces perpendicular and close to the area where air enters and by reducing sharp turns in the ducts. The cover has a relatively thin depth because the ducts cross and bypass each other in a very space efficient manner.

Abstract: An acoustic door for an equipment enclosure, such as a rack mount cabinet, also provides a low impedance air flow uniformly delivered across the cabinet opening. A pair of metal panels, with acoustic foam along the rear surfaces, extend angularly outward and toward one another to form an air inlet opening between the outer edges. A central column is positioned between the panels which, in a horizontal section, forms an aerodynamic dome which has a continuously curved sheet metal surface at the front and sides that also captures a core of acoustic foam that is exposed at the rear. A rigid vane is disposed at each lateral side and parallel to the central column to cause air to follow the column surface, deflecting air behind the column and effecting uniform delivery of air flow across the cabinet front opening at the rear opening of the door.

Abstract: A commutate silencer of a computer system is described. The commutate silencer of the computer system is installed at the back end of the computer system, and comprises a shield device, a commutate device and at least one partition. The shield device comprises a first shield and a second shield, in which the first shield comprises an opening, the first shield and the second shield construct a first cavity, and the first cavity includes a plurality of outlets. The commutate device comprises a frame and a plurality of commutate diversion plates, in which the frame construct a second cavity, the diversion plates traverse the second cavity, the second cavity has an inlet and a ventilated opening, and the ventilated opening is connected to the opening of the first shield.

Abstract: An acoustic blanket is disclosed for an industrial machine including a plurality of flexible panels, wherein each panel includes at least one layer of a fiber glass material, an outer casing of a chemically resistant material and an attachment for connecting the panel to an adjacent panel, and the plurality of flexible panels are each assigned a position in said blanket corresponding to a location on the industrial machine.

Abstract: A fiber body includes a collection of fibers containing thermoplastic resin as the main component and an energy consuming component, such as a piezoelectric material for converting and consuming external mechanical energy of sound and vibration. The energy is converted into electrical energy, which in turn, is converted and consumed into and as heat by means of the electrical resistance of the resin.

Abstract: An apparatus attenuates noise from a cabinet that houses computer equipment. The apparatus includes a frame, a set of positioning members to position the frame relative to the cabinet, and lateral noise absorption members that are supported by the frame. The lateral noise absorption members define surfaces that form sides of airflow channels through the apparatus. The surfaces are substantially non-parallel to a direction of an airflow pathway through the cabinet when the set of positioning members positions the frame relative to the cabinet. The lateral noise absorption members absorb sound energy emanating from the cabinet (e.g., from a fan assembly within the cabinet). The lateral noise absorption members transform some of the sound energy into low level heat which can be dissipated into the air stream. Additionally, some of the sound energy is reflected back into the cabinet toward the source.

Abstract: A hydraulic pump-motor having an end shield which deadens the sound generated by the pump-motor do thereby result in a quieter unit. The present invention provides a conventional hydraulic pump-motor having an electric motor coupled to a pumping mechanism wherein the motor includes an improved sound attenuating end shield design. Through the use of acoustically deadening materials such as cast iron and polypropylene plastic, the end plates of the present invention deaden the sounds stemming from the vibration of the pump-motor. In addition, the present invention provides an end shield design which allows the stator to be secured to the motor housing and the air gap between the rotor and the stator to be precisely measured prior to the installation of the end shield. The present invention therefore results in not only a quieter pump-motor but also a pump-motor with higher machining tolerances, improved efficiency, and lower production and maintenance costs.

Abstract: A soundproof material comprising a porous member having an air permeation amount based on the pressure difference of 2.039.times.1/10.sup.4 mmH.sub.2 O of from 1.times.1/10.sup.10 to 2.times.1/10.sup.2 cc/cm.sup.2 /second, and having a compressibility.

Abstract: A noise reducing device for printers including a noise reducing hollow body consisting of at least one hollow duct at one side of a sheet delivery opening opposedly arranged to a printed sheet guiding-receiving member positioned at the other side of the sheet delivery opening, and the hollow duct is oriented such that a noise outlet thereof is opened towards the upper surface of the sheet guiding-receiving member.

Abstract: A printer has a feeding path for guiding a printing paper from and toward an opening of the printer. A cross-sectional shape of the feeding path is minimized to be sufficient to pass the printing paper through the feeding path. At least one resonator is arranged in the feeding path. The resonator has a case defining a resonant chamber and holes formed on the case along with the feeding path. The resonant chamber communicates with the feeding path through the holes. Noises such as impact sound generated by a printing head of the printer are silenced by the resonator at frequencies around a resonance fequency of the resonator, and further silenced by the area reduced portion of the feeding path.

Abstract: A printer sound enclosure includes a perimeter wall defining a printer receiving compartment. A cover is positioned on the perimeter wall and is movable to permit access to the compartment for installing and operating a printer. An air duct is situated on the enclosure for open communication with an air vent on the printer housing. The air duct permits free passage of air for cooling purposes into or away from the printer housing. The air duct facilitates cooling of the printer components without requiring the use of an auxiliary fan on the enclosure. Sound reducing material is situated within the compartment and air duct to minimize sound emissions from the enclosure as the printer operates.

Abstract: Sound attenuation for a printer which includes impacting print elements and other movable noise producing parts being mounted to a frame and further including a biparted housing; the frame bottom having downwardly extending feet by means of which the printer rests on a support surface; the housing envelops the frame and is provided with openings through which the feet project without touching the print housing; the housing is floatingly suspended on said frame through a plurality of connections each of which includes pins integral with the frame and being circumscribed by an attenuating sleeve which is being connected to the frame by a locking cap seated on the respective pin for holding down the sleeve.

Abstract: The noise level of an impact printer is reduced by at least 5 dB by providing a resonant absorption chamber between the printer frame and the cover which is designed so as to have a resonance frequency corresponding to the fundamental frequency of the printer noise.

Abstract: A casing structure which includes a first casing unit having a first compartment and a second compartment, and a second casing unit having a third compartment. The second casing unit is pivotably connected to the first casing unit so as to open or close with respect thereto. The three compartments have respective inlets and outlets which are connected in series through connecting passages including these outlets and inlets to define an air flow passage. A heat source and sound source, i.e., an electrical and mechanical unit, is arranged in the intermediate second compartment and an air cooling fan is provided in the air flow passage in the vicinity of the heat unit.

Abstract: An acoustic enclosure (10) has interconnected sound reducing panels forming a substantially rectangular structure which is configured to house a computer printer. Each side (12,14) panel is a multiple strata panel having an outer polymeric stratum (26), a multiple channel intermediate thermoplastic stratum (28) and an inner open celled acoustic material stratum (30). The rear and bottom panels (16, 18) are multiple stratum panels, having multiple channel intermediate thermoplastic stratum (46) which is sandwiched between inner and outer polyurethane foam strata (44,48). An adhesive material (42) is provided for bonding the outer stratum to the intermediate stratum and the intermediate stratum to the inner stratum for each of the panels. An angle member (62) affixed to the intermediate stratum is provided for joining adjacent panels of the enclosure. A rigid thermoplastic hinged cover (22) having a uniform bend (52) is provided for closing the enclosure.

Abstract: A printer in which paper transport takes place from a sealed entrance opening in a housing to the printing area, and then to a sealed exit opening of the housing. The entrance and exit opening is sealed against escape of noise by a rotatable cylindrical friction roller located between the incoming and outgoing portions of the paper strip, during printing the roller being pulled by tensile stress in a paper against wall portions on the outer side of the housing.

Abstract: In a ribbon cartridge for an office writing machine, which cartridge includes a housing having a base plate, a supply reel and a take-up reel mounted in the housing, a carbon ribbon wound around the reels and mounted to be conducted from the supply reel to the take-up reel while traveling over a guidance path having a first portion located outside of the housing and a second portion located inside the housing and extending between the first portion and the take-up reel, the housing being provided with an entrance opening located between the first and second portions of the guidance path for the passage of the ribbon into the housing, and the cartridge further including guide elements located for guiding the ribbon along the second path portion and a transport roller located along the second path portion for transporting the ribbon to the take up reel, the base plate is provided with recesses for damping noise generated during operation of the machine, and the cartridge is constructed for preventing particles

Abstract: Apparatus for attenuating noise necessarily emitted from output slots of a printer mechanism enclosure and utilizing a minimal amount of enclosure components of significantly reduced size. Input and output housings or compartments for noise attenuation are provided, each of which form elongated narrow guideways. One end of each of the guideways of each of said compartments is aligned with the paper input and output slots, respectively, of the printer mechanism housing and is sealed to prevent noise at the juncture. The guideways have narrow passageways extending therethrough, but are sufficiently wide to permit the paper passing therethrough to move without experiencing any drag resistance due to the presence of the guideways. At least one surface of the guideways confronting and substantially parallel to the moving paper web is lined with a suitable noise attenuating foam.

Abstract: A device for attenuating noise emitted to the environment by noise-generating aggregates, while simultaneously dissipating heat, provides a housing about the noise-generating aggregate, which housing comprises a pot-shaped capsule of noise-attenuating material and a cover of noise-attenuating material which seals the capsule. In addition, an arrangement, including heat-conducting material, is provided for promoting heat flow from the housing.

Abstract: An acoustical enclosure for isolating high-frequency noise produced by automatic business machines, such as typewriters and teletypes. A top paper-feed housing is removable and a midsection is hinged to permit access to the enclosed machine. An exhaust fan removes heated air from the enclosure and an air-intake lip at the front of the enclosure permits ambient-temperature air to be taken into the enclosure.

Abstract: A wire printer printing head comprises a support member, a plurality of printing elements having a print wire with a flap-armature electromagnet and a sound absorbing cover. The printing element are radially and slidably mounted to the support member and adjustable to a mounting position of each printing element with respect to the support member by an eccentric pin. The sound absorbing cover composed of a core plate and sound absorbing material is secured to the support member and surrounds all printing elements.