Abstract: A bearing assembly for a worm drive supporting the worm of the worm drive with washer-shaped thrust slide bearings and bush-shaped radial slide (sintered oil-containing bearings) bearings. The thrust slide bearings are made of a resin containing 95 to 99.9 wt % of polyetheretherketone resin, which is an aromatic polyetherketone resin. Wear of the thrust slide bearings is reduced and its durability is improved, thereby preventing vibration and noise of the worm drive as well as improving its durability.

Abstract: A remote control assembly having a conduit and a core element slidably disposed in the conduit. An adjustment device is selectively connected to one of the conduit and the core element for adjusting an effective length thereof. The adjustment device includes an adjustment housing and a slider. A locking element, having locking teeth, engages with slider teeth of the slider. The locking element defines a cavity for allowing insertion of a tool to facilitate movement of the locking element from a locked position to an unlocked position. Also, a cover is slidably supported on the housing and the cover includes a detent to further facilitate movement of the locking element.

Abstract: The present invention finds application in the art of sport and leisure accessories, and relates to a ventilated bicycle handlebar, which includes a tubular body having an axial inner cavity, a center portion for connection to a bicycle frame and end portions, designed to be grasped by the hands of a user. The tubular body has an air inlet at the center portion and an air outlet in the remaining areas. The inlet is partly or wholly oriented in the riding direction so that the incoming air can flow through the inner cavity and come out of the outlet to ventilate the hands of a user during riding.

Abstract: Disclosed is a vehicle pedal (1) for actuating a vehicle, wherein the pedal includes at least two metal sheets (10, 20), i.e. a bottom metal sheet (10) and a pedal metal sheet (20), which are spaced apart from one another by at least two springs (14). The bottom metal sheet (10) is provided with sides (12) that form an angle in the front and rear. Suspension points (13) for the springs (14) are arranged on the sides (12) while corresponding suspension points (22) are provided on the pedal metal sheet (20). Only the pedal metal sheet (20) is directly connected to the vehicle floor pan by a pan-mounted pivot bearing (23) so that linear momentum is not transmitted to the driver's foot (2) in case a mine explodes.

Abstract: A pedal device for a vehicle in which a support member for rotatably supporting a pedal arm is mounted on a dash panel positioned forward of a deck cross member. The pedal arm is pivotally attached to the support member by a pedal-rotating shaft inserted through a pedal shaft hole formed in the support member, and this support member has a pivotal impact lever which is provided above the pedal arm and forward of the deck cross member and brought down toward the pedal-rotating shaft.

Abstract: A torque transfer device for a motor vehicle has an input element, at least one output element, a friction clutch for the setting of a torque transfer from the input element to the output element and an actuator. The actuator includes a drive motor, a reduction gear unit and a ramp ring mechanism. The ramp ring mechanism has at least one rotatable first actuator ring which is made to convert a rotary movement into an axial actuation of the friction clutch. The reduction gear unit has a worm gear having a worm and a spur gear section meshing with the worm, with the worm being coupled to the drive motor and the spur gear section being coupled to or made in one piece with the rotatable first actuator ring. The axis of rotation of the worm is inclined by an oblique position angle with respect to the rotational plane of the spur gear section, with the oblique position angle substantially corresponding to the pitch angle of the worm. The spur gear section has a straight toothed section.

Abstract: The invention relates to rotary units and rotary mechanisms that are suitable for use in numerous applications. Rotary units typically include rotational components that are configured to rotate. In some embodiments, for example, multiple rotary units are assembled in rotary mechanisms such that neighboring pairs of rotational components counter-rotate or contra-rotate relative to one another during operation of the rotary mechanisms. Rotational components generally include one or more implements that are structured to perform or effect one or more types of work as the rotational components rotate relative to one another in a given rotary mechanism. In certain embodiments, implements are configured to rotate and/or to effect the movement of other components as rotational components rotate.

Abstract: In an index table, a left-hand specification and a right-hand specification of a motor can be changed. As solving means, there is provided an index table 1 in which a rotating table 3 is rotatably supported at a frame 2 by a rotating shaft 10, a setting surface 5 is provided at the frame 2 orthogonally to a rotating table surface 4 of the rotating table 3, a motor 8 is disposed at a surface 6 among two surfaces (6, 7) of the frame 2 that are orthogonal to the rotating table surface 4 and the setting surface 5, an output shaft 9 of the motor 8 is connected to an end portion at a side of the surface 6 of the worm shaft 11 through transmitting elements (14, 15), the worm shaft 11 being orthogonal to the surface 6, and the motor 8 drives the rotating table 3 through the transmitting elements (14, 15), a worm 12 of the worm shaft 11, and a worm wheel 13, the worm wheel 13 being provided at the rotating shaft 10.

Abstract: During the production of stainless steel, a slag is formed during the melting of the solid material in the electric arc furnace, the slag having a high degree of metal oxides, particularly chromium oxide. The chromium concentration often reaches values of more than 30%. Currently, such slags cannot be reduced to a desired degree due to their composition. In order to minimize the resulting high loss of recyclable material, the invention provides to charge the electric arc furnace with pellets, or briquettes (8), which are made of a defined mixture of an iron carrier as the ballast material, carbon, or carbon and silicon, as the reducing agent, and a binder, wherein they react beneath the slag layer (7) in the steel melt (6) with the metal oxides of the slag (7), particularly with the chromium oxide present, in a floating, chemical, and reducing manner. The reaction gases (12) produced in the process, which are mainly made of carbon monoxide, advantageously support a foaming of the slag (7).

Abstract: A Ti-based cermet 1 includes at least one of Co and Ni, at least one of titanium carbide, titanium nitride and titanium carbonitride including at least one selected from the metal elements of groups 4, 5 and 6 of the periodic table, and Ru.

Abstract: A process for producing Ti, comprising a reduction step of reacting TiCl4 with Ca in a CaCl2-containing molten salt having the Ca dissolved therein to thereby form Ti particles, a separation step of separating the Ti particles formed in said molten salt from said molten salt and an electrolysis step of electrolyzing the molten salt so as to increase the Ca concentration, wherein the molten salt increased in Ca concentration in the electrolysis step is introduced into a regulating cell to thereby render the Ca concentration of the molten salt constant and thereafter the molten salt is used for the reduction of TiCl4 in the reduction step. In the present invention, the Ca concentration of the molten salt to be fed to the corresponding reduction vessel can be inhibited from fluctuating and, at the same time, can maintain high concentration levels. Further, a large volume of the molten salt can be treated continuously.

Abstract: A packable battering ram quickly disassembled for transport by two or more persons. In the preferred embodiment, the invention has first and second body members that are symmetrical, but otherwise identically shaped and sized. When assembled, the first and second body members form a lower surface that has a concave portion that approximates the natural curvature of the back of an adult male. The packable battering may be disassembled to distribute the weight between multiple people, yet quickly assembled for use upon arrival at a emergency response location.

Abstract: A self-energizing and de-energizing adjustable gripping tool for engaging a work piece to impart work thereto includes a first element and second element disposed for relative movement. The second element includes an actuation portion having a plurality of slots. The first element includes gripping elements which are each associated with a force transfer element that engages one of the slots such that movement of the second element relative to the first element actuates the gripping elements to engage the work piece.

Abstract: An extension member for use with a socket wrench having a first end portion, a shaft portion connected to the first end portion, and a second end portion connected to the shaft portion opposite of the first end portion. The second end portion has a bore for receiving said socket wrench and an exterior surface shaped to matingly receive a second wrench that can provide alternate torque delivery. The extension member further has at least one bolster located on the second end portion of the extension member.

Abstract: A manipulating device (1) for lathes is described, in particular for vertical turret lathes including at least one toolholder saddle, of the type comprising at least a first and a second workpiece manipulator device (10,11) associated with the saddle, such that by means of the displacement of the toolholder saddle the manipulator devices are displaceable between a station (C) for loading workpieces (P) to be machined and a station (S) for unloading the machined workpieces, a workpiece table (4) of the lathe being placed between the stations (C,S) to support the workpiece (P) during machining, wherein the first and the second manipulator device (10, 11) are displaceable with movements independent of one another, at least in the direction (X) of displacement of the toolholder saddle to and from the loading and unloading stations (C,S) and the workpiece table (4), in such a way that the distance between the manipulator devices (10, 11) on the lathe is adjustable at least in that direction (X).

Abstract: A method for simultaneously cutting a compound rod of semiconductor material into a multiplicity of wafers. The method includes selecting a first workpiece and a second workpiece, each having two end surfaces; grinding at least one of the two end surfaces of each workpiece so as to create a ground end surface on each workpiece; cementing the ground end surface of the first workpiece to the ground end surface of second workpiece using a fastener so as to produce a compound rod piece having a longitudinal axis, wherein the fastener is disposed between the workpieces so as create a distance between the workpieces; fixing the compound rod piece in a longitudinal direction on a mounting plate; clamping the mounting plate with the compound rod piece in a wire saw; and cutting the compound rod piece perpendicularly to the longitudinal axis using the wire saw.

Abstract: A method for producing a duct from a planar board having two opposed substantially parallel edges with metal foil facings on opposed major surfaces of the board is disclosed. The method comprises making planar cuts through one of the metal foil facings and at least most of the planar board there below to produce a blank with 3 parallel “V shaped grooves which are parallel to angled edges of the blank. A duct is formed by folding the blank so that the “V” shaped grooves form three of the edges of the duct, and the angled edges form the fourth of the edges.

Abstract: Adjustable cutting tools and methods of cutting through the casing wall of a pipe using an adjustable cutting tool are disclosed. According to one embodiment of this disclosure, an adjustable cutting tool includes a frame, a drive system, and a cutting system. The frame is configured to secure the tool to the exterior surface of a pipe. The drive system is configured to move the tool across the surface of the pipe, and the cutting system is configured to cut into the surface and through the wall of the pipe. By combining the features of the frame, drive system, and cutting system, the adjustable cutting tool may cut a pipe as it moves along the surface of the pipe.

Abstract: Woodworking machines including cutting tools and motors adapted to drive the cutting tools are disclosed. The machines also include a detection system adapted to detect a dangerous condition between the cutting tool and a person, and a reaction system adapted to perform a specified action upon detection of the dangerous condition. The machines further include a control system adapted to test the operability of at least a portion of the detection system and/or the reaction system. The control system is adapted to disable the motor if the tested portion is inoperable.

Abstract: Chopping wheel (19), intended for chopping continuous strands into sections of predetermined length, which has a backup component consisting of a rotating drum equipped with blades (22) arranged perpendicular to its periphery and, between these blades (22), components that, under the effect of the centrifugal force, are supposed to ensure the compression of strands (11) against the surface of a backup drum, and then the chopping of the strands into sections (14), and the ejection of the chopped sections, the components ensuring the compression of the strands consisting of fins connected to deformable ring (26, 27a, 27b) arranged under the base of blades (22) and whose axis coincides with the axis of rotation of said chopping wheel (19), is characterized by the fact that on each side, deformable ring (26, 27a, 27b) has a parallel straight side extending from the base of deformable ring (26, 27a, 27b) to the base of the fins.

Abstract: An apparatus for cutting fiberglass insulation batting with a rotary blade where an elongate section of fiberglass insulation batting is manually pushed into an inlet of the apparatus whereupon the blade bites into the fiberglass insulation batting and whereupon the elongate now split section of fiberglass insulation batting begins to protrude from the outlet of the apparatus, whereupon the protruding sections of fiberglass insulation batting are manually grabbed and pulled through the apparatus further driving the rotary blade and further cutting the fiberglass insulation batting.

Abstract: The present invention includes a cutting device including a table configured to accommodate a workpiece, and a cutting unit positioned on an upper side of the table and being operable to vertically move relative to the table. The cutting unit includes a cutting blade, and a grip portion disposed on a lateral side of the cutting blade and capable of being grasped by an operator in order to vertically move the cutting unit. The grip portion has a palm contact part that can be touched by a palm of the operator when the operator grasps the grip portion. The palm contact part is inclined relative to a reference line that may be perpendicular to a surface of the cutting blade.

Abstract: A cutting device 15 that, after a sheet S is stuck on a wafer W on a sticking table 13, cuts the sheet S along the outer edge of the wafer. The cutting device 15 comprises a robot body 62 disposed beside the sticking table 13 and a cutter blade 63 supported by a tool holding chuck 69 positioned at the front end of the robot body 62. The cutter blade 63 is detachably attached to the tool holding chuck 69 so as to be replaceable and is arranged so as to cut the sheet S in a state that the posture thereof is adjusted along a preset movement track.

Abstract: A window shade cutting apparatus includes a hollow frame which has a base, a front wall, a rear wall and a plurality of side walls to hold a shade guiding assembly, a cutter assembly located above the shade guiding assembly and coupled therewith, a clipping assembly located at one side of the base and a shade measuring assembly located at another side of the base. The cutter assembly has a transmission screw bar to drive a first toggle lever set and a second toggle lever set at two opposite sides to move a cutter vertically up and down to cut off a window shade easily with less effort.

Abstract: The body support (2) for a guitar (1) or similar musical instruments can be removed and is shaped like a frame. It comprises a single bass clef-shaped body, the two ends (3,4) of which are attached to the guitar body (5) at a distance from each other. The body support (2) protrudes on both sides and at the end of the guitar body (5), thus facilitating the handling of the guitar (1) and accessibility to the tuning elements (6). An elastic padding (12) is provided in the holding region of the body support (2). The body support can be removed and folded for transporting the guitar (1).

Abstract: A self-contained tuning stabilizer for a stringed instrument consists of a body which is attachable to the stringed instrument like a capo, the stabilizer containing mechanical members for increasing or decreasing the tension on each of the strings to keep them in tune as the instrument is played. The device contains sensors for each string, an analyzer for determining if the frequency produced by each string is correct, and a driver for each of the mechanical members for applying micro-tuning corrections to the strings. The device must first be zeroed, and the instrument tuned by hand. Thereafter, the device will maintain the original tuning.

Abstract: A music device comprising a large acoustic frequency chamber, the chamber further comprising an elastic membrane placed on the acoustic chamber. It also comprises, at least one tightening ring and one tightening tuning device, where the tightening tuning device is anchored to a tightening ring and an elastic membrane. The device further comprises one small acoustic frequency chamber that contains another elastic membrane and a second tightening ring. Both chambers combine acoustic frequencies to produce a single combined acoustic frequency. The music tuning device is used both to clasp at least one drum skin and to mask unharmonic resonances.

Abstract: A method and apparatus for displaying a sheet of music, which may include providing an image of the sheet of music on an electronic storage media; transmitting the image from the electronic storage media into a system processor; showing the image on a display; and electronically scrolling lines of the music image as a musician plays each line on an instrument. Optionally, the apparatus may include a storage media into which a music sheet is scanned to form an image; a system processor for storing and processing the image from the storage media; and an electronic display for displaying the image while the musician plays the music from the image.

Abstract: The invention relates to a music notation system that obviates the need for one to have any knowledge of conventional music notation in order to play a keyboard, including those that are a component of a conventional musical instrument, those that are a component of an electronic musical instrument and those that are configured as a user interface with a computer system and/or video game.

Abstract: The present invention is a microphone set which comprises a hand-hold microphone housing, a microphone, and a karaoke module received in the microphone housing. The karaoke module further comprises a voice input module, a data storage, a data processor, an audio output module, and a video output module. The present invention can use audio and text data to perform karaoke. The audio data is cheap and easy to obtain and doesn't need any process. The audio data can be downloaded or converted by the user. The text data is also very convenient to obtain. It can be edited or created by the user. Both the audio data and the text data are in small size for storing. The microphone set of the present invention is portable. It can selectively store a large amount of songs. It is convenient to use, and provides professional performance.

Abstract: Disclosed is an audio device that adjusts the cadence of played songs. A user sensor determines cadence data based on movement of the user. A desired cadence is determined based on the cadence data received from the sensor. The cadence of songs is determined by low pass filtering digital representations of the songs and determining the period (T) of the back beat of the songs. An adjustment of the period (T) of the songs is then determined such that the adjustment of the period (T) of the songs results in the songs having the desired cadence. The period (T) of the back beat of the subsequent songs are then adjusted.

Abstract: An electronic keyboard apparatus capable of changing, with a simple construction, a musical tone control characteristic for each pedal manipulation stroke section. A detection value representing a pedal depression depth is converted into an output value according to a table group, and a musical tone parameter is controlled based on the output value. The table group includes default and alternate tables exhibiting a hysteresis such that the output value converted from the same detection value becomes smaller in a reverse pedal stroke than in a forward pedal stoke. In the forward stroke, the default table is changed to the alternate table when the detection value passes a second threshold value provided on a deeper depression depth side than a first threshold value. In the reverse stroke, the alternate table is changed to the default table when the detection value passes the first threshold value.

Abstract: A system for remotely monitoring an environment and selectively deploying munitions is provided. The system is comprised of sensors to monitor one or more select environments, one or more munitions deployment devices disposed in the selected environment, and an operator control unit (OCU) operable to communicate with the munitions deployment device(s) and sensors. Sensor data is communicated to the system, enabling a user to selectively deploy munitions disposed in or in communication with the munitions deployment device(s), based on the threat detected by the sensors. Deployable munitions include both lethal and non-lethal munitions. The munitions deployment devices may be deployed in a stationary location, or in mobile applications, such as on a robotic vehicle, and accommodate removably, electrically initiated munitions cartridges. Further, the deployment devices may be in wired or wireless communication with the system, allowing virtually unlimited scalability.

Abstract: A technique for launching a missile that avoids some of the costs and disadvantages for doing so in the prior art. In particular, the illustrative embodiment of the present invention uses an electromagnetic catapult to throw the missile clear of the launch platform—with sufficient velocity to attain aerodynamic flight—before the missile's engine is ignited.

Abstract: A composite armor 10 is provided with a cellular structure 12 having a plurality of composite inserts 14 arranged in openings 20 provided in the cellular structure 12. A pair of laminate sheets are arranged on oppositely facing sides of the cellular structure 12 and covering the inserts 14. The laminate sheets 26 and 28 are bonded to the structure 12 and the inserts 14 by an adhesive. The cellular structure 12 includes a plurality of fibers extending continuously throughout the cellular structure 12.

Abstract: The present invention is a protective structure and panel system to protect a user against projectiles, blast pressures and fragments from small arms and explosions that is attached to a floor and a ceiling or just a floor. The system has a plurality of structural columns attached to the ceiling and/or the floor, a frame attached to the structural columns, a plurality of protective panels that are set within the frame and a means for attaching the protective structure and panel system to the ceiling and/or the floor. The invention also includes a vertical retrofit support system used in combination with a load bearing structure such as a wall to support a floor and a ceiling of the load bearing structure.

Abstract: The invention relates to an axial piston machine (1) of swashplate construction, with two pivot bearing parts (13b, 13c), between which a gap (14) is arranged, in which a cage segment (15) is pivotably mounted with a plurality of rolling elements (13f) about a common pivot axis (13a), the cage segment (15) being guided by an elongated guide element (19) extending transversely to the gap (14) and projecting over the gap (14), and which at one of its ends has a round guide body (19c), with which it is pivotably mounted in a sliding guide (24), which is arranged on one of the two pivot bearing parts (13b, 13c) or built-on components thereof. The guide element (19) is respectively pivotably connected by a rotary bearing (21, 22) to the cage segment (15) and the other pivot bearing part (13c).

Abstract: The invention relates to a gas liquid contactor and effluent cleaning system and method and more particularly to an array of nozzles configured to produce uniformly spaced flat liquid jets with reduced linear stability. An embodiment of the invention is directed towards a stability unit used with nozzles of a gas liquid contactor and/or an enhancer for stable jet formation, and more particularly to reducing the stability of liquid jets formed from nozzles of the gas liquid contactor. Another aspect of the invention relates to operating the apparatus at a condition that reduces the stability of liquid jets, e.g., a droplet generator apparatus. Yet another aspect of the invention relates to operation of the apparatus with an aqueous slurry. Still another aspect of the invention is directed towards to an apparatus for substantially separating at least two fluids.

Abstract: The invention relates to a gas liquid contactor and effluent cleaning system and method and more particularly to individually fed nozzle banks including an array of nozzles configured to produce uniformly spaced flat liquid jets shaped to minimize disruption from a gas. An embodiment of the invention is directed towards a gas liquid contactor having a plurality of modules including a liquid inlet and outlet and a gas inlet and outlet. An array of nozzles is in communication with the liquid inlet and the gas inlet. The array of nozzles is configured to produce uniformly spaced flat liquid jets shaped to minimize disruption from a gas flow and maximize gas flow and liquid flow interactions while rapidly replenishing the liquid.

Abstract: The present invention relates to a method of producing hydrogen of very high purity from a feed predominantly containing said hydrogen and a minor part of impurities mainly consisting of carbon dioxide, carbon monoxide, methane and heavier hydrocarbons. The purification method by hydrogen adsorption using a desorption stage at a lower pressure than the pressure of the feed, such as a PSA method for example, allows to produce the desorption stream and notably to recover the carbon dioxide under pressure and high-purity hydrogen, with a high yield. These performances are obtained by combining the successive stages of the method according to the invention with the use of a new family of adsorbent whose dynamic capacity at a high desorption pressure is greater than that of conventional adsorbents.

Abstract: The present invention relates to a device and method for separating particulate material from a gas flow, comprising a substantially elongate housing provided with a peripheral wall and an inlet opening for admitting the gas flow with particulate material into the housing; a number of electrodes extending in the housing up to a predetermined radial distance from the peripheral wall; and an outlet opening arranged downstream in the housing for discharging the gas flow, wherein the outlet opening extends from the axial centre line of the housing to a point some radial distance from a peripheral wall of the housing, and wherein the particulate material is guided into an intermediate space between the outlet opening and the peripheral wall.

Abstract: A deodorizing device is provided featuring a collection mouthpiece having an intake port and an internal channel, and a pump unit attachable to the collection mouthpiece and operable to draw malodorous air into the intake port and through the internal channel when the collection mouthpiece is attached to the pump unit. Also provided are a pump unit, a filter cartridge, a mount, and methods of assembling and using the same.

Abstract: Solid nanoparticulate transition metal complexes of Co(II) salen exhibit reversible oxygen absorption in a near stoichiometric manner. In contrast, no measurable oxygen binding was observed with unprocessed Co(II) salen.

Abstract: The invention relates to a method for purifying a supply gaseous flow containing at least 5 vol. % of N2O and oxygen, in which: (a) the gaseous flow is contacted with a main adsorbent (3) including at least one zeolite exchanged at more than 50% by one or more metal cations and having an N2O adsorption capacity, as measured under 1 bar and at 200° C., of more than 80 Ncm/g in order to adsorb at least a portion of the N2O from said flow and to produce a purified gaseous flow; and (b) recovering a purified gaseous flow having an N2O content lower than the N2O content of the supply gaseous flow contacted with the main adsorbent during step (a).

Abstract: Method for the dissolution of a gas in an input gas flow, in which a soaked solid comprising a porous substrate comprising pores each having a size less than 100 nanometres (nm) and each containing a solvent of the gas, is swept with the input gas flow comprising at least the gas.

Abstract: A filter having two drain valves piloted by an electro-pneumatic valve. A check valve may be provided to by pass the filter. A membrane filter housing may include vanes extending into a reservoir in which the membrane filter extends. Also, one of the circumferential recesses of the bore for the membrane filter is in the reservoir.

Abstract: An improved ventilating range hood includes a sheet metal collecting hood, vented to the outdoors; a variable speed, electronically controllable fan, mounted in such a way as to draw air from a cooking area and out through said vent of said collecting hood; a plurality of air quality sensors capable of detecting both comfort factors and the presence of hazardous substances in the air; an embedded control algorithm which examines the composite output of said discrete air quality sensors, as well as, the trend information and determines from said information an instantaneous ventilation requirement, and a control signal, derived from said algorithm to regulate the fan speed level such that every combination of discrete air quality sensor conditions will have a unique associated fan speed level based on said ventilation requirement. The air quality sensors may include sensors for temperature, humidity, carbon monoxide, smoke, etc.

Abstract: A gas separation device is disclosed. In particular, seal assemblies and adsorbent element constructions for a gas separation device such as a pressure swing adsorption device are disclosed. The seal assembly can be part of a rotary valve and can include a seal backer and a floating seal positioned within a bore in the seal backer. The floating seal is configured to press towards and seal against an adjacent rotor. Valve action is provided as apertures in the floating seal and rotor are brought into and then out of alignment as a result of relative rotation therebetween. The seal assembly can include two types of gas chambers to apply balanced sealing pressures over the sealing surface of the valve, one type configured to receive pressurized process gas from within the device and the other configured to receive gas from an independently controlled pressurized gas source.

Abstract: The invention is directed at a mist eliminator for horizontal gas flow applications which is built as a combination of tubular and vane type elements and which is used to separate droplets from flue gas flows in a flue gas desulphurisation (FGD).

Abstract: A high cleaning efficiency room air cleaner with a slim profile providing a clean air delivery rate sufficient to clean any ordinary size room includes a flat-panel housing having an internal chamber sized to receive conventional large area flat-panel furnace filters of standard size and a fan array preferably of high efficiency, low power axial computer fans mounted to the flat-panel housing. The room air cleaner may include a scent cartridge and a UV lamp assembly.