Abstract: Apparatus for producing sterile air suitable for being administered to intensive-care patients in hospitals using atmospheric air. The medical-grade air is free of gaseous contaminants and germs, at a cost substantially lower than when such air is prepared by mixing pure nitrogen with pure oxygen.Atmospheric air is compressed through at least one dry-piston compressor, condensing water vapor out of the compressed air through expansion into a buffer tank, filtering out dust particles down to micron size in a prefilter, drying the air through an adsorption desiccator unit and eliminating gaseous contaminants through an adsorption-desorption unit. A second dust filter is provided for trapping any dust released from the adsorption units. Biological contaminants, such as viruses and bacteria, are eliminated by flowing through a sequence of three biological filters of the coalescence type, and finally through a cold sterilizing unit.

Abstract: A filter comprises a filtering wall (2) which has a front face and a rear face and which is normally permeated by a medium in a direction from the front face towards the rear face such that the pollutants entrained by the medium are separated at the front face of the filtering wall and the purified medium is allowed to pass through the wall and into a space behind the filtering wall, the flow of medium through said wall being reversible, if so desired, in order to remove said separated pollutants from the front face of the filtering wall so as to clean said wall. According to the invention, the front face of the filtering wall is provided with one or more elastic cover elements (9) which are movable relative to the filtering wall and adapted upon reversal of the flow of medium, by elastic deformation under the action of said flow, to be removed wholly or partly from the wall while working said separated, adhering pollutants in order to facilitate the removal thereof.

Abstract: An apparatus for the recovery of contaminated air and water from a flow system. The apparatus provides a high efficient compartmentized stacked design embodying removable filters that first effect a moisture separation and then air borne particle filtering, with such functions separated by a fluid collection tank. The apparatus provides structure for ready removal of the filters and collected fluid with minimum down time so as not to interrupt the recovery process.

Abstract: An air filter for removing particulate matter from an airstream by cyclonic action and having replaceable primary and secondary filter elements.

Abstract: An in-line vapor trap for removing water and/or oil vapor from a compressed air line which includes a manifold having spaced coaxial inlet and outlet openings, a hollow base suspended from the manifold, and replaceable cartridges connecting the manifold inlet to the hollow base and connecting the hollow base to the manifold outlet. A honeycomb structure is disposed in the lower portion of the base within the enclosed volume defined thereby and cooperates with the base side and bottom walls to define a zone of substantially zero air movement for collection of liquid droplets. A depression in the base bottom wall forms a liquid sump, and a drain opens into the sump for drainage of captured liquid. This drain features a continuously open annular orifice for continuous weep-drainage of liquid under pressure. The orifice surrounds a wire having an angulated head disposed within the sump which may be rotated by an operator so as to remove dirt and debris from surrounding and clogging the annular weep orifice.

Abstract: A body of a vacuum cleaner comprising three subassemblies, i.e., a front subassembly, a central subassembly, and a rear subassembly. The front subassembly stores the matter drawn through a suction port formed in a suitable position. The central subassembly can be connected and disconnected with the front subassembly and has an evacuating device therein. The rear subassembly is connected to the central subassembly by coupling members and acts to cover the back side of the evacuating device incorporated in the central subassembly.

Abstract: A motorized vehicular vacuum street sweeper (2) includes a hopper (14), a vacuum system (12) for suctioning debris and depositing same in the hopper (14), and a multi-stage filtration system (16) including a coarse filter above the hopper (14) and two different material filters (54 and 56) in an exhaust section (30) of the vacuum system (12) downstream and external of the hopper (14) to filter dust and the like and afford a cleaner exhaust to the atmosphere.

Abstract: An in-line trap for removing water and/or oil vapor from a compressed airline which includes a manifold having spaced coaxial inlet and outlet openings and a hollow base suspended from the manifold. A first cartridge extends between the manifold inlet and the enclosed volume within the hollow base, and includes a wire fiber pad adapted to coalesce water and/or oil vapor in air passing therethrough into droplets which are then entrained by the air and carried into the base volume. Within the base, a plate having parallel louvers or vanes upwardly struck therefrom in a direction opposed to air travel is supported with respect to the base bottom wall by a honeycomb spacer which forms a dead air space beneath the louver plate. The louvers function to trap vapor droplets which fall by gravity from the air entering the base volume.

Abstract: A strainer device for railroad car air brake combined dirt collector and cut out cocks, and arranged to be applied within the swirl chamber of such cocks, and between the collector bowl, about the pedestal thereof, and the lip of the cock throat chamber, which strainer device comprises an outer shell that is open and flanged at both ends, with one end of the outer shell being disposed adjacent the throat lip, an annular seal applied between the said outer shell one end and the throat lip, an inner shell disposed within the outer shell and secured at the other end of the outer shell and adapted to receive the cock collector chamber pedestal, and a compression spring received about the pedestal within the cock collector bowl and resiliently seated against the outer shell end flange at that end of same for spring biasing the other end of the outer shell and the seal against the throat lip.

Abstract: Incoming air passes through one or more orifices in an expansion head forming small jets which impinge upon a downwardly facing cylindrical wall for moving water droplets and the like into a sump. A curved shield located above the cylindrical wall serves to move the incoming air upwardly in a relatively uniform billowing mass. A filter cartridge includes, in the order described from the lowermost to the topmost, at least three individual cells. The first cell contains cotton waste for absorbing water, oil, particulate matter and the like. The second cell contains a material for capturing such things as oil aerosols, for example. The uppermost cell, again, contains cotton waste for removing particulate matter, such as dust from the molecular sieves, for example, and any residual moisture. The cells are spaced from one another by spring-loaded means to maintain the separation. The spaced relation of the cells prevents channeling of pressurized air through the cells.

Abstract: A scroll type fluid displacement apparatus including a housing divided into a discharge chamber and a suction chamber is disclosed. A fixed scroll member is disposed within the housing and comprises a first end plate and a first wrap which extends from one end surface of the first end plate. The discharge chamber is formed adjacent the fixed scroll member on the side of the first end plate opposite the side thereof from which the first wrap extends. An annular shaped dividing wall is formed at the end surface of the first end plate and extends into the interior of the discharge chamber. The discharge chamber is partitioned into two chambers by the dividing wall. At least one hole is formed through the dividing wall to connect the two chambers of the discharge chamber. The dividing wall is provided with a deflecting member for bending the fluid flow of the discharging fluid. At least one oil separating member is disposed in a fluid passageway upstream of a fluid outlet port from the housing.

Abstract: A two-stage air cleaner with side-by-side elements. The cleaner has a first element (30), a second element (32) which itself may have a safety element (35). The first element (30) is preferably a conical inertial separator having a scavenge outlet (38). The second element preferably employs a pleated filter (50) which receives cleaned air (indicated by arrows 104) which passes through the filter (as indicated by arrows 106) to the outlet tube (56). In an alternative embodiment, pleated filter (50a) may have a reverse taper corresponding to that of the conical inertial precleaner (30a), thereby reducing the size of the housing.

Abstract: A compact, self-cleaning, cabinet, dust collector is provided. The collector housing is a single-piece, molded unit having recessed areas and a molded air inlet. Entering dust-laden air is directed into two flows in a passageway surrounding a suspended, flexible, pleated filter element. An inner wall of the passageway contains a precleaner upstream from the filter element. A collector ramp, at the bottom of the passageway, directs pre-cleaned matter to a removable hopper. A fan, supported above the open upper end of the filter element draws air through the collector. A fan motor is isolated from the housing interior in one of the recessed areas of the housing. To gain access to the filter element the fan is rotated upwardly and away from the filter element. To prevent the pleats of the element from collapsing, hot-melt spacers are provided on the pleat surfaces. The element is flex-cleaned by a rotatable mechanism located beneath and adjacent the bottom closed end of the element.

Abstract: The invention provides an air cleaner assembly in combination with an engine having a blower housing with airflow circulating therethrough and a carburetor having an intake. The assembly comprises a duct having an inlet and an outlet with the inlet angularly disposed through the blower housing, an air cleaner housing having side walls and a bottom wall, and an outlet chamber having an inlet and an outlet in communication with the carburetor inlet. Within the air cleaner housing, a first interior wall is upstanding from the bottom wall and defines with certain side walls an intake chamber having an inlet communicating with the duct outlet, and a second interior wall upstanding from the bottom wall so that a filter chamber is formed between the interior walls having an outlet in its bottom wall so that the filter chamber and outlet chamber communicate through the filter chamber outlet and the outlet chamber inlet.

Abstract: A compact air filtering device for filtering room air in the home or work environment constructed of a minimum number of unitary structural elements is disclosed, the device having a fan for drawing air through the device encased in detachably interlocked upper and lower enclosure members, one filter positioned on the upper fan enclosure member, and a housing detachably interlocked with the lower fan enclosure member enclosing the filter and the upper fan enclosure member. The device is adapted to receive additional filters identical in construction to the first filter by the addition of an intermediate housing member which increases the internal space within the device without any modification to any of the elements of the device.

Abstract: A combined filter and filter-drier, for the suction side of refrigeration and air conditioning systems, comprises a dual filter system straddling a cylindrical plug of dessicant. Upstream of the dessicant, a rigidly built primary filter assembly comprises an inlet deflector and a stepped filter. Downstream of the dessicant, a secondary filter assembly comprises an outlet filter pad which is compressed by a coaxially disposed spring near the inlet of the filter/filter-drier. The inlet deflector is preferably triangular in shape and is disposed transversely to the inlet.

Abstract: A combination acoustical muffler and exhaust converter for use with internal combustion engines, comprising an elongated hollow cylinder adapted to be connected to a source of exhaust gas, screen means positioned at a plurality of longitudinally spaced locations within said cylinder for partitioning the cylinder into a plurality of chambers arranged in series flow relation with each other and with respect to the flow of exhaust gas through said cylinder, the screens having a silencing action on said exhaust gas, magnet means in one of said chambers for exerting a magnetic pressure on the gas passing therethrough to serve to separate ferrous particles from the exhaust gas stream, a packing material of mineral material, such as mineral wool, in another of said chambers for condensing moisture in said exhaust gas and for removing hydrocarbon therefrom, and a material such as a ceramic material of an extremely fine porous nature, in still another of said chambers for removing carbon monoxide from said exhaust gas

Abstract: A contact compartment for intermixing dust or fume laden gases with solid substances, in a turbulent or fluidized layer, the gases being the turbulence carrier, and the solid substances being the turbulence material. The intermixing action induces the noxious components of the dust or fume laden gases to absorptively react or combine with the solid substances and form absorption compounds. In order to prevent the conventional formation of inhomogeneous sections in the turbulent or fluidized layer, during the intermixing action, the turbulence material and turbulence carrier, present in the compartment, flow transversely through at least one revolving drum having a perforated peripheral wall and equipped with a charge of filled-in regular or irregular-shaped bodies.

Abstract: A cooking unit having a hood equipped with air cleaning structures and blowers for moving air through the cleaning structures. The air cleaning structures include a pre-filter having spaced baffles for collecting air borne greases and particles. A primary fiber filter and secondary charcoal and oxidizer beds are located downstream of the pre-filter. A high efficiency filter is located downstream of the secondary cleaning beds. A damper behind the pre-filter closes in response to an increase in temperature of the air moving through the filters. A separate heating unit is used to reactivate the charcoal.

Abstract: A filter for removing airborne grease has spaced front and rear walls each with a series of transverse louvers extending into the interior of the filter and opening downwardly. A filter media of expanded metal sheets is sandwiched between the front and rear walls.

Abstract: An apparatus and method for controlling the quality of the air in a specific environment including a base portion having a plurality of air purification means. The base provides support for an upwardly extending central tower having a plurality of air inlet openings which are shielded from the weather by protective covering means. The tower is covered by a roof. On entering the tower, the content of the air is monitored. A fan means creates an air flow path through the air inlet openings, downward through the tower to the air purification means in the base, through any one of the plurality of air purification means before being vented to the outside environment through air outlet openings. The air is monitored again after being filtered to determine the amount of pollutants. If the amount of pollutants in the air is below a predetermined level, the air is vented to the outside environment by retaining an air outlet gating means in its open position so that the purified air can pass to the outside.

Abstract: A container for air filters adapted to selectively house one or the other of at least two different primary filter elements having different diameters and different lengths, the container having a cylindrical body closed at one end by a fixed cap and closed at its opposite end by a removable cap, an air inlet in the container body and a centrally disposed air outlet in the fixed cap, the fixed cap being provided with a plurality of concentric annular sealing surfaces surrounding the air outlet, each such surface forming a seat for a different size primary filter element, centering means being provided to center each different primary filter element in the container, together with adjustable means for securing each different primary filter element in the container with its end in sealing contact with the corresponding sealing surface, provision being made for a secondary filter element.

Abstract: A separator for use in separating air-born rock material from air. The separator comprises a housing defining a generally horizontal air flow path with at least one set of spiral deflector bands within the housing extending across the flow path. Each band preferably comprises a twisted strip of material which is resilient, but the strip can also be made from rigid or flexible material.

Abstract: An appliance for attachment to a compressed air line leading from an air compressor, the appliance including a container containing an interchangeable waste dryer made of remnant fabrics and through which the air passes so that moisture from the air is absorbed thereby, and the appliance, in another model thereof, additionally including a water cooled tubes so to cool the passing air and condense the moisture therefrom.

Abstract: A portable air filter and absorber device for removing impurities such as gases and finely divided solids from the atmosphere includes a sectionalized cylindrical housing containing a blower mechanism operatively connected to a motor driving section. An activated carbon section is detachably mounted adjacent the blower section for removing odors and noxious gases from the atmosphere and attached in series to the activated carbon section is a fibrous section which acts to filter particulate material from the air prior to its entry passage into the carbon granule section. The sectionalized cylindrical housing includes a plurality of inner annular grooves which are adapted to matingly engage projecting end portions of the carbon granular section and the fibrous filter section to permit predetermined mounting of these sections in series to the housing.

Abstract: Apparatus for filtering a gas stream including a common manifold to which, in use, gas to be filtered is passed, a plurality of gas outlets from said manifold, a plurality of particle separators adapted to remove particles from said gas stream prior to exiting from said gas outlets and wherein said particle separators are adapted to deliver particles separated from said gas stream to said manifold, and a particle outlet from said manifold.

Abstract: A self-cleaning air cleaner having a housing with a first partition dividing the interior of the housing into a first generally vertically elongated chamber and a second generally horizontally elongated chamber. The partition lies in an oblique plane at an angle with respect to the elongation axes of the first and second chambers and has an opening which provides fluid communication between the first and second chambers. A fan or blower is provided within the housing for drawing air through the housing from a dust-laden air inlet to a clean air outlet. A filter is mounted within the housing and disposed to filter the air passing through the opening in the partition. A reverse pulse air valve is disposed within the housing to direct a pulse of cleaning air into the filter to dislodge the dust collected thereon. An electrical control circuit is provided for actuating the reverse pulse air valve which is connected to a suitable source of compressed air.

Abstract: Pollutant particles, particularly lead particles, are removed from engine exhaust gases by passing the gases successively through three aligned chambers, of which the first and third contain wire mesh or expanded metal packings, while the second chamber is divided by a deflecting baffle which deflects the partially cleaned exhaust gases downwards to deposit particles in the bottom of the second chamber.

Abstract: A separator device for removing the oil from an oil-carrying air stream, the device comprising two concentrically spaced oil separator elements which are mounted inside a cylindrical housing in such a way that the air stream is forced successively through a coarse filter body and a fine filter body, where the oil droplets are trapped and collected, accumulating inside the spaced bottom covers of the two separator elements. Separate oil suction pipes serve to remove the accumulated oil from the device.

Abstract: A filter box contains within a rotatably mounted filter, structured as a drum, a fiber preseparator cooperating with such filter. The fiber preseparator has a ventilator at its inlet and operatively flow communicates with a fiber separator. This fiber separator contains a movable plunger or equivalent structure, by means of which the separated fibers are compacted and ejected into a collecting container. The air flowing through the filter effluxes through an opening in the filter box into the machine room or area containing the textile machines with which the filter box is used. The air responsible for transport of the fibers from the preseparator into the fiber separator, following separation from the fibers, is returned back to the suction side of the ventilator and again into the preseparator. A suction tube cooperates with the inner side or wall of the rotating filter drum. This suction tube likewise flow communicates with the suction side of the ventilator by means of a dust separator.

Abstract: An apparatus for removing oil mist includes a cylindrical main body having an air inlet at one end and an air outlet at the other side thereof. A cylindrical rotatable filter having one end open to the air inlet and a centrifugal fan disposed concentrically within the filter and rotatable therewith are positioned within the main body. An oil adsorbent layer is provided on the inner surface of the main body surrounding the filter. The air taken in through the air inlet is passed through the filter into the air outlet causing air-borne oil mist to adhere to the filter. That oil mist which coalesces on the filter is centrifugally forced outward, is adsorbed by the oil adsorbent layer, and thereafter travels through the oil absorbent layer for discharge through an oil drain channel.

Abstract: A device for cleaning the air in welding shops includes a casing surrounding a fan and an electric motor, a mechanical filter upstream of the fan and a filter including active carbon down-stream of the motor. In order to maintain a suitable temperature for the active carbon the air is brought to pass through, or around the motor. A thermal relay is provided to interrupt the current supply to the motor, should the temperature, due to clogging of the mechanical filter and resulting increase of the motor output, be raise to an impermissible level.

Abstract: An air cleaner assembly for use with an internal combustion engine. A housing is provided having an inlet for receiving dirty air, a clean air outlet, and a dust port for discharging dust which has been separated from the air. A plenum chamber has an inlet for receiving clean air from the housing outlet, an outlet adapted to be connected to the intake of an internal combustion engine and fastening means for securing the plenum chamber in a fixed position relative to the engine. The housing and plenum chamber are detachably interconnected so that only a minimum outward displacement of the housing away from the plenum chamber is required for removal of the housing for inspection and servicing.

Abstract: Apparatus for connecting a cylindrical first member to a second cooperating member comprising: a tubular housing adapted for connection to the second member and to coaxially receive a portion of the cylindrical first member; a gripping assembly carried by the housing and movable from a radially expanded position, in which the first member portion may be axially received in and displaced from the housing, to a radially contracted position gripping the exterior of the first member and preventing its axial displacement from the housing; and an actuating assembly carried by the housing, engageable with the gripping assembly and being operable by a force applied externally of the housing for moving the gripping assembly between its expanded and contracted positions, the actuating assembly being self-locking so that upon removal of the externally applied force the gripping assembly remains in its gripping contracted position.