Abstract: A filter assembly for use in an air purifier unit having a rectangular shaped air inlet entrance to the unit blower. A rectangular shaped frame containing a HEPA filter pack is slidably received within the blower inlet. An L-shaped flange surrounds the filter frame and closes against the air inlet of the blower to provide an air seal. The top wall of the flange is offset some distance from an adjacent wall of the frame to provide a handle for the filter assembly.

Abstract: A security vent, providing a housing assembly mounted to a support, the housing assembly including a side wall portion having first and second distal ends thereof and defining a passageway therebetween; a drawer assembly having a filter-receiving slot therein, the drawer assembly being slidingly received by the housing assembly second distal end, the drawer assembly being moveable within the housing assembly passageway between an open position and a closed position, wherein the filter-receiving slot is disposed within the housing assembly when the drawer assembly is in the closed position, and wherein the filter-receiving slot is in communication with a region outside the housing support when the drawer assembly is in the open position; and, a latch assembly mounted to the housing assembly, the latch assembly being moveable between a locked position and an unlocked position, the latch assembly being received by a latch-receiving notch provided in the drawer assembly when the drawer assembly is in the closed p

Abstract: A security vent is mountable to an existing air duct inlet opening and includes a housing assembly having a mounting frame fixedly secured to an inlet end of an air duct and a housing wall fixedly secured to the mounting frame by at least one side wall portion. The housing wall includes a front face being in spaced relation to the mounting frame and includes a perforated front face thereof. The mounting frame includes an opening therethrough which cooperates with the perforated front face of the housing wall permit flow communication of the air duct through the security vent. The housing wall cooperates with the mounting frame to define a filter-receiving region therebetween. A door is hingedly attached to an open side wall and is moveable between an open position and a closed position. A latch assembly is fixedly attached to the door and is moveable between a locked position and an unlocked position.

Abstract: A combined air filter and diffuser for attachment beneath an air discharge duct discharging blown air into a room of a building. The air filter is configured to abut and be flushly mounted to the ceiling immediately below the duct. The filter has a housing including a track disposed to receive a flat air filter element so that the filter element lies horizontally proximate the ceiling. The housing has a slidably removable closure exposing the filter element for removal, which is accomplished by sliding the filter element horizontally from the housing. The housing includes a diffuser having pivotally mounted fins disposed immediately below the filter element. The housing mounts to the ceiling by receiving fasteners through small opening formed in an upper, horizontal wall of the housing.

Abstract: An air register filtering system for mounting to an existing air register thereby removing particles of dust, pollen and other debris that do not get trapped by a furnace filter before being blown into the room providing cleaner air for the user and reducing the need for dusting. The system includes an air register a filter retaining structure engaging the existing air register, and a filter secured within the filter retaining structure.

Abstract: An apparatus for fixing a trash bag to a vacuum cleaner that prevents the trash bag from being freely moved right and left and improves an assembling productivity of the fixing apparatus is disclosed. The fixing apparatus has first and second guiding bars formed on an inner wall of the dust collecting chamber for guiding a cardboard when the cardboard of the trash bag is inserted therein. First and second supporting brackets prevent the cardboard of the trash bag from being freely moved right and left by fixing the cardboard guided by the first and the second guiding bar. A fixing member which is elastically fixed inside of the first and second brackets prevents the cardboard of the trash bag, which is fixed by the first and the second supporting brackets, from being freely moved right and left. A fixing boss integrally formed with a floor of the dust collecting chamber and protruded upward fixes the fixing member to the first and second supporting brackets.

Abstract: An air filter, especially for cleaning combustion air for internal combustion engines. The air filter includes a substantially cylindrical housing having a raw inlet and a pure air outlet. A pure air outlet is fitted substantially concentrically on the face of a cylindrical housing. The raw air inlet is fitted on the surface of the housing jacket, and an essentially menthol-free filter element is secured in the housing. The housing aperture is fitted with adaptive systems having an integrated dirt extractor.

Abstract: A clean room includes walls, a floor and a ceiling which define the room. An air delivery system having a HEPA filter, a fan and an air return duct in communication with the filter, is provided to maintain the air in the room clean. A shield of the present invention is mounted in the room over a work surface to form a clean zone over at least a part of the table. The shield is mounted so that at least a part of the filter is within the clean zone so that filtered air will be forced into the clean zone. Accessories, such as an IV bar and a light panel may be provided with the shield to facilitate working in the clean zone. The shield creates a clean zone in the clean room having a higher class rating than the clean room rating without the use of additional HEPA filters and without the use of traditional laminar flow hoods.

Abstract: Room air is pulled from an inlet into a pre-filter duct and moved therethrough and through a main filter duct to an outlet in the room or some other location. The flow path is through a pre-filter unit, blower, germicidal light unit, and HEPA or ULPA filter unit to the outlet. Each of the units is readily replaceable and is furnished with a bio bag. The ducts have access openings in the duct wall at the unit locations. The access openings have flanged collars, with removable covers thereon. For installation of a unit, the bio bag is opened and secured to the flange, followed by removal of the flange cover. Then the unit is installed in the duct, the cover re-installed on the flange, and the bag rolled up in place, still attached to the flange, and remains so during operation of the apparatus and during removal of the unit at the end of its useful life, and then is used to encapsulate the used unit for disposal of the unit, to protect the service personnel from exposure to contaminants.

Abstract: Apparatus for mounting different size filters in various combinations within an air duct that includes a frame for mounting channel shaped upper and lower support members in said duct so that the members open toward each other and extend across the width of the duct. Longitudinally disposed, spaced apart, removable dividers are slidably retained in the support members so that racks are established for retaining filters of varying widths between the support members. In one form of the invention intermediate support members are mounted between the upper and lower support members so that filters can be mounted in tiers within the apparatus.

Abstract: A smoke removal device, especially designed for use in welding, having one or more portable funnels, with a wide opening through which suction may be directed to remove smoke from particular areas where combustion is taking place, and a narrow opening opposite to the wide opening, a vacuum device for creating the suction by which the smoke is removed, the vacuum device having an inlet valve for each funnel, and hoses connecting the narrow opening of each portable funnel to one of the inlet valves of the vacuum device. In a preferred embodiment, the portable funnel is connected to a base containing magnets. The funnel is connected to the base by a first cylinder extending downward from the funnel, with the first cylinder fitting inside a second cylinder attached to the base, with the funnel and first cylinder being rotatable in relation to the base and the second cylinder. A wheeled, multifilter carriage is provided to clean smoke coming from the funnel before it is exhausted into the surrounding air.

Abstract: An air conditioner includes a body and a filter-carrying apparatus mounted to the body for carrying a removable filter. The filter-carrying apparatus includes a grill mounted to the body for rotation about a horizontal axis adjacent its lower end between a closed position adjacent the body and an open position spaced from the body. A filter guide structure guides a filter for sliding movement relative to the grill along a guide path. The filter guide structure is operably connected to the grill for movement therewith away from the body when the grill is moved to its open position. The guide path defined by the filter guide structure is oriented at an angle relative to a plane of the grill when the grill is in its open position. The filter guide structure can be rigidly connected to the grill to form a permanently angled relationship therebetween, or it can be pivotally mounted for movement relative to the grill so that the angled relationship is formed only when the grill is rotated to its open position.

Abstract: A computer drive bay cover with filter including a cover plate that has a front panel with a peripheral overhang. The front panel has a plurality of linear slots cut at a slant. The overhang has a pair of side portions with a pair of elongated projections for forming a rear channel. A filter sheet is positionable within the rear channel of the cover plate. Lastly, a rear panel is provided. The rear panel has an elongated rear edge that is hingedly coupled to the overhang. The rear panel has a bottom side with a plurality of pile-type fasteners that couple with a plurality of pile type fasteners affixed to a central processing unit housing. The rear panel is secured to the central processing unit housing for positioning of the cover plate, with the filter sheet, over a drive bay of the central processing unit housing.

Abstract: The present invention is directed to improvements in servicing the air filters in air conditioning units such as rooftop air conditioning units. More specifically, the invention is directed to an air filter channel and puller which facilitate the removal of rows of filters.

Abstract: A window fan incorporating a filter. The fan has a low, flat profile for fitting in a window while occupying limited viewing area of the window. The fan includes laterally projecting extensions for sealing a gap which might otherwise exist at the right and left sides of the fan. The fan includes a motorized squirrel cage blower for forcing air through a flow path defined within the window fan. The blower is elongated, and oriented with its rotational axis arranged horizontally to enable the low profile. The filter is washable, and is installed by sliding into a holding chamber, and located serially within the air flow path. The window fan has a manually adjustable air deflector for directing discharged air as desired. The electrical circuit conducting power to the motor includes a touch sensitive switch for on-off control, a thermostatic switch for operating the fan when the touch switch is on and a predetermined temperature is detected, a speed selector switch, and an indicating lamp.

Abstract: A substantially sealed modular air handling system includes a separator suspension system. The separator suspension system is utilized for sealingly suspending a separator unit within a cabinet of the modular air handling system. The separator suspension system includes opposed, side-mounted brackets operably coupled to the separator unit to define at least a portion of a sealing gasket channel. A sealing gasket is disposed within the sealing gasket channel portion. A cooperative translatable support bracket is included for cooperating with the separator unit side-mounted brackets to support the separator unit, the translatable support bracket being operably coupled to the cabinetry of the modular air handling system and having an upwardly directed support surface for selectively supportingly engaging the support face of the separator unit side-mounted brackets.

Abstract: A vent screen and vent apparatus includes a vent duct along with an exterior grill connected to one end of the vent duct. The exterior grill includes a screen access opening. A vent screen support assembly is connected to the vent duct between the vent duct and the exterior grill. The vent screen support assembly includes a transverse screen supporting track supported by the vent duct and a longitudinal screen supporting track connected to the transverse screen support portion. A vent screen is installed through the screen access opening and is supported by the vent screen support assembly. The exterior grill includes a plurality of grill slats. An adjustable vane assembly is supported by the vent duct, and a manually operated vane adjustment handle is connected to the adjustable vane assembly for adjusting the adjustable vane assembly. The exterior grill includes a pair of long grill sides and a pair of short grill sides.

Abstract: An interconnection is made between a pair of electrostatic air cleaner cells which are placed in side-by-side relationship within a housing, such that when one is removed from the housing, the other is also removed.

Abstract: A modular air-cleaning apparatus for the treatment of contaminated air. The apparatus includes a plurality of modular units cooperatively interconnected, wherein the plurality of units includes at least one separator unit functioning on non-collisional principles and at least one filtration unit functioning on collisional principles. Each modular unit is constructed of a durable and machinable material that is capable of withstanding harsh environmental conditions of use and is formed in a rectangular shape around four corner posts. Each post possesses at least one exposed, outwardly-facing surface with a side margin parallel to a long dimension of the post. The posts aid both in establishing and maintaining a mechanical connection between the unit and another of the modular units with which it is in operable connection, and in enhancing structural and mechanical characteristics of the unit.

Abstract: In an air conditioning device having an air passage device that extends inside an instrument panel in a lateral direction of the body of a motor vehicle, the air passage device has a substantially L-shaped slit for attachment and detachment of an air filter, the slit being formed of a first slit opening downwardly and a second slit opening rearwardly of the vehicle body and a gap is provided between the second slit and a front end portion of a glove box. This permits the air filter of a square plate shape to be attached to and detached from the slit without interfering with the glove box, while being rotated slightly along the floor and toe board of the passenger compartment.

Abstract: A dust removing apparatus includes a filter and mounting frame which prevent leakage of dirty gas and improve the collection factor of soot dust even if dirty gas of a high temperature is subjected to a dust removing operation. The apparatus includes a filter element held in a filter element mounting frame, wherein a flange is disposed on an end of the filter element located on the side which receives dirty gas, and wherein the side of the flange opposite the dirty gas side is pressed against a flange of the filter element mounting frame. A seal packing is disposed between the filter flange and frame flange to seal the elements. Further, a plurality of honeycomb filter elements structured as above may be collected and accommodated to form a honeycomb pack.

Abstract: A filter element is placed in front of the air intake opening of an electronics cabinet such that all air drawn into the enclosure of the cabinet passes through the filter element. A fan is mounted such that all intake air is drawn only through the air intake opening and the filter. The filter element is removable from the enclosure for easy cleaning.

Abstract: A filter assembly of the Vee-panel type including a filter frame and a plurality of complementary pairs of replaceable and interchangeable filter panels slidably mounted within the frame and defining a plurality of adjacent Vees with the apexes of the Vees being disposed adjacent the air outlet end of the assembly. The filter frame defines a plurality of rectangular perimeter panel retention surfaces adjacent the sides of the filter panels for retaining the panels in place and forming an airtight perimeter seal therewith. A compressible gasket is disposed about each of the panel retention surfaces. The extended ends of each of the filter panels is provided with an end cap secured thereto. Each end cap defines a pair of identically configured cam surfaces thereon proximate the extended ends thereof.

Abstract: A combination filter module unit and replaceable filter element is disclosed, for use with an air handling system. The filter module unit provides channel construction for guiding the filter element between support legs. An access door provides a forth side to the rectangular unit. The filter element is of the typical flat rectangular construction type and includes a support frame for holding a filter media, the filter element frame being adapted to tightly fit within the outer frame so that air cannot flow around the filter element. A handle is used to insert and extract the filter element and provides a second function of providing a wedging surface for the access door to ride upon in achieving wedging action against the filter element so that the element is locked securely in place. The module provides double wall construction to enable fasteners to be place away from the filter element to avoid interference with it and to achieve a clean appearance.

Abstract: A heating or air-conditioning system for the interior of a motor vehicle, is provided which has an exchangeable air filter comprising two mutually adjoining filter sections, surrounded peripherally by a holding frame. For the insertion of the filter, the first filter section is initially fed in through an assigned opening and is then displaced sidewards into its working position and the second filter section is only then inserted. Two identical filter sections are used to increase the sealing effect, the mutually adjoining longitudinal sides of which, upon the second filter section being fed in, are connected by means of a tongue-and-groove joint, extending along the top of said longitudinal sides or alternately over half their length, into a mutually adjacent position. Guide devices ensure that the filter sections slide onto the holding frame.

Abstract: A lint trap unit for fabric dryers, constructed for passive, slow-flow quiescent-zone precipitation of a majority of lint and other foreign particulates entrained in the exhaust of the dryer, and also providing for secondary filter recovery of possibly unprecipitrated residues at an upper filter that is provided.

Abstract: The invention relates to a hollow body, in particular a pipe segment or a cylindrical body which contains gases or fluids or through which these can flow and comprises at least one opening in its wall surrounding the hollow space of the hollow body, the opening entering into a ring groove in the hollow body wall which extends around the entire outer periphery of the hollow body and over which opening a filter mesh strip located in this ring groove is spanned. In both side wall of this ring groove there are provided essentially opposing slot-shaped recesses extending annularly with the groove. The filter mesh strip is inserted into these recesses and held there by both its side edges.

Abstract: A filtering system for water treatment including a head member having inlet and outlet ports and replaceable, disposable filter cartridge for insertion into the head member, the filter cartridge including a dual lug retaining system for retaining the filter cartridge in the head member, one of said lug retaining systems being disposed on the pressure vessel of the filter cartridge and the other of said lug retaining systems being disposed on the closure member of the filter cartridge.

Abstract: A filter assembly including a base for supporting and providing fluid connection to a removable filter cartridge, the base having a hollow connecting end for mating with the cartridge, a removable filter cartridge comprising a filter medium and having a connecting end shape to mate coaxially with the end of the base in a rotatable, telescopic relationship, the connecting end of one of the base and the cartridge having lug means extending radially toward the end of the other, the other connecting end having corresponding passage means for lockably receiving the lug means, the telescopically related mating ends of the base and cartridge providing radially opposed surfaces of circular cross-section about the mutual axis of the connecting ends of the base and cartridge, and a circular elastomeric sealing ring providing a radial seal between the circular cross-section surfaces, preventing liquid flow past it between the telescopic ends.

Abstract: An air filter system, with a replaceable cartridge, suitable for use in controlled environment systems such as computer information storage and retrieval devices. The system provides ease of maintenance, while providing a highly sanitized air stream to an optical device, over prolonged periods of operation, for temperature control of temperature sensitive areas. The system is comprised of a housing plenum located in the controlled environment system, the housing having a sliding filter tray, a plurality of air flow ports and a spring biased valve gate. When the filter tray is fully inserted in the housing, the valve gate is forced open so that the air flow is into the controlled environment, but when fully retracted the valve gate closes, causing the air to exit the system through an exhaust port.

Abstract: An air distribution system for a vehicle cab is disclosed herein. Fresh air is drawn into the system, filtered and transferred to the interior of the vehicle cab. The system uses a blower for transferring air into the cab with all fresh air passing first through a fresh air filter. The fresh air filter has air flow from a hollow interior out through air permeable sides. This air flow traps particulates within the interior of the filter which is then easily removed from an air filter chamber without emptying dirt into the chamber or on the operator. Furthermore during operation, accumulated dust and dirt is kept within the filter and does not drop off on or around the cab. This system may be used for simple ventilation or may be combined with other air conditioning and air recirculation means thereby providing a total vehicle ventilation system.

Abstract: A nestable roof vent for use on the roofs of grain bins and other structures where circulation of air within the structure is required. The vent includes a bird screen sized to extend across the interior of the vent housing that is secured to a flange over the opening in the bin roof so as to be free from binding contact with the vent housing. Accordingly, should the screen become clogged with husks or leaves, the screen will bend about the flange to release any pressure build-up before structural damage to the structure can occur. A locking seam, capable of being made along the curved edge of a piece of sheet metal, is also disclosed.

Abstract: High efficiency air filters, including cores of pleated media sealed within a metal frame, are supported by parallel tracks suspended from overhead structure of an enclosed room. The filters are arranged both side-by-side and end-to-end in closely adjacent relation to present an essentially continuous, downwardly facing surface forming all or part of the overhead boundary of a space wherein downward, laminar air flow is provided. The filter units are sealed to one another, or to the adjacent walls, continuously around the periphery at the lower ends by caulking material which is injected from below into the spaces between the units to provide a totally sealed system, whereby the only path for air to enter the room is from above through the high efficiency filter media.

Abstract: A dust collector for radioactive particles includes a housing divided into upper and lower chambers by a partition plate, the upper chamber being formed with a discharge port for cleaned gas and a filter supply port, the lower chamber being formed with an inlet port for a gas to be cleaned and a filter discharge port, a filter holder extending through the partition plate, the filter holder being arranged to enable a filter to be installed from above and to be withdrawn downwardly.

Abstract: The present invention is directed to a dust collector (100). Dust collector (100) has a housing (102) separated by partition (130) into inlet chamber (126) and clean air chamber (128). A clean air drum (140) rotatably supports columns of horizontally extending, filter elements (142). A low pressure, high volume pulse apparatus (10) is operable through blowpipe (148) to sequentially provide a low pressure reverse pulse to a column of filter elements (142) thereby separating any dust cake from them and allowing it to fall into conical portion (106) for removal from collector (100) by air lock (108). The motor (158) which rotates blowpipe (148) also disengageably rotates clean air drum (140) and attached filter elements (142) to align a column of filter elements (142) with door assembly (114) for maintenance.

Abstract: An assembly is provided for securing a pair of filter supports to support structure defined by the casing of an air handling unit and for selectively providing flanges for securing a duct to the casing. The filter support includes a filter channel having a channel portion for securing a filter and having a flange portion. The filter support may be mounted in a first position with the flange portion not extending beyond the end of the unit and in a second position with the flange portion extending beyond the end of the unit for promoting connections to a duct. Additionally, duct angles are provided having flanges extending therefrom. The duct angles are mounted to have the flanges extend inwardly when the filter channel does not extend beyond the unit and are mounted to extend outwardly to coact with the flange portions of the filter channels when it is desired to connect a duct to the unit.

Abstract: A housing for mounting HEPA filters includes an open-ended tubular casing (12) and, within said casing, slide structure (24) for slidably mounting a HEPA filter therein from one of the ends of the casing. Baffle means (18) divides the interior of the casing into respective chambers (20, 22) which, on mounting of the filter in the slide structure (24), are gastight isolated from each other except by way of the filter and which are accessible from a respective one of the open ends of the casing. Also provided are gas intake/exhaust ports (46, 48) for each of the chambers (20, 22), a pair of cover members (14, 16) for closing the respective open-ends of the casing (12), each of which cover members (14, 16) includes a flange (94) complementary to the associated end of the casing (12), and respective clamp and seal means (100, 84) for clamping the cover members (14, 16) to the casing to effect gastight engagement of the flanges (94) with the respective ends of the casing (12).

Abstract: A gas dust-removing or dedusting filter of the kind incorporating a filter casing, filter tubes or bags having a flattened oval cross-section, and internal spacing elements. The casing includes a vertical partition having perforations and dividing the casing into a pure or clean gas chamber and a gas dust-removing chamber. The tubes or bags are horizontally insertable into the dust-removing chamber through the perforations of the partition and are sealed at their open ends to the clean gas side of the partition while their closed ends are supported on the rear wall of the casing.In accordance with the invention, parallel vertical guide members, each having a surface which slopes with respect to a rear wall of the casing, are secured to the inner side of the rear wall of the casing. One guide member is disposed between two adjacent filter tubes or bags. The filter tubes or bags rest on support bars adjacent the rear wall of the casing, which engage said guide members.

Abstract: A filter module has a housing providing a receptacle for a standard filter element, and also has a lateral extension for accommodating securing means to hold the filter element in place. The lateral extension defines a grille opening for removeably receiving an outlet grille in flush relationship, the grille opening extending laterally beyond the receptacle. A seal gasket closes the space between the grille and the filter element, embracing the securing means.

Abstract: A filter retaining device to prevent a unit filter from inadvertently falling out of a bottom access flow-through housing when the housing is opened to gain access to the interior. Bottom access flow-through filter housings typically include spaced apart elongated channels which slidably receive a unit filter. These channels serve to locate and hold a unit filter in a gas stream passing through the flow-through housing. The filter retaining means is removably attached to the bottom open end of each channel to support the unit filter in the flow-through housing when the bottom access is opened to gain access to the interior of the filter housing.

Abstract: A bacterial filter unit for use in anesthesia applications and respiratory procedures, which bacterial filter unit comprises a two-piece molded housing, each piece being of a generally frusto-conical shape and having an interlocking edge for joining the two housing pieces together in a sealing locking engagement, for retention of a filter media formed of fiberglas or other material between the two housing portions, and for sealing the filter media, each housing portion further having a tubular opening at the peak of the frusto-conical portion for connecting the filter unit in the necessary conduit in the anesthesia or respiratory application apparatus for filtering the bacteria passing through the lines.