Abstract: A replaceable air filter apparatus suitable for filtering the air in the home includes a frame for affixing the apparatus to the house duct work associated with the heating and/or air conditioning system the frame includes a hinge disposed on one edge, which cooperates with a hinge disposed on a register that may control the flow of air through the duct work and may include adjustable shutters and a device for removably retaining a filter media. The register may be pulled away from the frame for inserting and removing the filter media disposed therein, when desired.

Abstract: A grill filter assembly for mounting in the exit or entrance wall opening of a forced air duct wherein the grill plate may be installed in a hinged relation to the duct enabling easy access to the duct opening. In a preferred embodiment, the grill face plate is adapted to have a particulate filter and/or, if desired, a scent dispenser disposed thereon and the hinged relation of the face plate enables easy access to the filter for the changing thereof. Since the grill filter assembly is adapted to be mounted directly into the exit or entrance opening of the duct, the faceplate contains no unsightly screws or other fixtures as are common on heating and air conditioning registers and face plates. In a preferred embodiment, the assembly includes match means for cooperating with the wall to expeditiously mount the assembly in the duct.

Abstract: A device for separating particulate matter from a fluid in which such particles are dispersed by causing the fluid to flow longitudinally through a conduit of uniform cross-section and in which a plurality of elements are disposed, with the first of the elements being disposed at an input end of the conduit and sealed against the inner wall thereof. The fluid is caused to flow through the conduit at a velocity such that the particles are fluid-borne. The remainder of the elements are offset laterally inward of the conduit wall by a distance which increases as a function of each element's numerical position after the first element and they are equally spaced apart in a longitudinal direction to provide a gap between successive pairs thereof. Each element, except for an outtake orifice, includes an inner surface disposed at an oblique angle with respect to the longitudinal axis of the conduit.

Abstract: A mist eliminator comprising baffles (2) having capture pockets (12, 16) for droplets to be eliminated from a solids-laden and/or liquid-laden gaseous flow, the mist eliminator being distinguished by the feature that each baffle (2) comprises at least two capture pockets (12, 16) which are disposed and configured in such a way that their orthogonal projection to the entrance plane (E) substantially spans the field of flow.

Abstract: In known separators, some of the solids trapped in the trapping chutes may be prevented from being discharged at the wall due to by-pass currents at the lower end of the trapping chutes. To improve the discharge of the separated dust, the lower end of each trapping chute that is adjacent to the wall is provided with an outlet channel piece extending to the wall and having a slot-like outlet opening resting at the wall and opening downward; and sheet metal deflectors are arranged between the outlet channel pieces of each layer of trapping chutes at a distance from each other and from the wall, which form between them delimit slots for the passage of gas. The separator is preferably used to separate solids from the ascending flue gas in a fluidized bed furnace.

Abstract: A facial air cleaner adapted to remove airborne particles in the vicinity of a person's face prior to insertion of contact lenses to eliminate the airborne particles from being deposited on the contact lenses during insertion. The cleaner is an enclosed unit which has an air inlet driven by an electric fan and conduit connected to the inlet adapted to provide a pattern of high and low velocity air flow through outlets arranged to surround the face and gently flood the hand holding the lens with cleaned air while a lens is being inserted.

Abstract: This application discloses an improved throughput blade design for louvered separators having a plurality of louvers (134). Each louver has a tab (144) extending perpendicularly from a central axis or plane (140). The optimum tap spacing S can be calculated with the knowledge of the blade angle B or the blade gap G. The tap height H is calculated as a function of the blade gap G. The tab (144) is designed to improve the efficiency the louver separator while making manufacture of the entire louvered array possible in one or two steps rather than necessitating manufacturer of each louver for later assembly.

Abstract: An air precleaning device for use in connection with clean air consumption and ventilation purposes such as with internal combustion engines, compressors, and the like and for ventilation such as in a vehicle cab or in clean air quarters generally, the precleaner comprising a directional hood receiving contaminant laden air, having an unrestricted air intake and a short throated directional separation chamber in which contaminants are separated from the incoming air and discharged and a passage directs cleaned air to its intended use.

Abstract: An air cleaning method and apparatus is disclosed in several embodiments. In one set of embodiments, there is described an air cleaning method and apparatus in which air to be cleaned is drawn toward and through a filter in a particular direction. Periodically, reverse pulses of air are directed through the filter in a direction opposite to normal flow to interrupt the flow of air and to dislodge collected particles from the uncleaned air side of the filter and to enable migration of the particles toward the downstream lower end of the filter.In accordance with other embodiments of the present invention, there is described the addition of inertial precleaner devices located proximate the unfiltered side of each filter for inertially separating heavy particulate matter from the uncleaned air prior to filtration.

Abstract: A filter assembly for use especially with air conditioning and heating ducts, comprising first and second rectangular frames, the latter frame being detachably positioned in the first one, and a filter element sandwiched between the rear end of the second frame and a flange seat on the first frame. Interiorly separable snap lock elements on the first and second frames serve to retain the latter frame and filter element in position in the first frame. The second frame is formed into a louver or grill and includes a plurality of horizontally-spaced and inclined slats, the spacing being so as to permit ample flow of air through the assembly, the slats serving as a handle for the insertion and withdrawal of the second frame relative to the first one.

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: A cone-shaped screening member for separating solids from a gaseous medium such as steam flowing through a pipe line. The cone shaped member has a plurality of spaced annular screen elements of increasing diameters disposed behind each other with the cross section of each screen element shaped substantially as an obtuse triangle. Particular features of the screening member are,(a) inclining the outer triangle side of the screen element at about the inclination angle of the cone, and(b) providing a discharge opening in the pipe line at about the base of the cone for removal of separated solids. This prevents settling and clogging of the gas passage canals and also prevents accumulation of settled solids in the pipe.

Abstract: A protective air filter intake hood with an air deflecting intake screen for internal combustion engines and other air-aspirating machinery, the protective screen which covers the air intake opening having a series of slats forming intake flow gaps inclined at an acute angle to a horizontal vector line, so as to force the intake air to execute a change in flow direction of more than 180 degrees, in order to enter the intake duct, thereby ejecting heavier-than-air matter from the intake air.

Abstract: A filter for separating material of greater density from material of lesser density, comprises a hollow body having an inlet at one end thereof for the materials to be separated, and outlets at the other end thereof for the separated materials. A passage joins the inlet to the outlets and has two sets of separator vanes disposed therein. Alternatively, a single set of separator vanes is disposed in the passage. Each set of vanes is positioned in the passage so as to define a first, convergent flow path for the material of greater density. The vanes in each set are spaced longitudinally of the passage such that a plurality of second, divergent flow paths for the material of lesser density are defined between respective pairs of adjacent vanes. Each vane has an upstream edge, a first surface portion extending from the edge in a downstream direction and facing in an upstream direction, and a second surface portion which is concave and which faces in the downstream direction.

Abstract: A canister and the manufacturing process therefor, for a catalyst converter for prevention of attrition of the catalyst by rounding of the inside corners of the gas inlet and outlet in the canister holding a pellet catalyst.

Abstract: A pellet holding casing disposed in a container is formed at its wall sections with a plurality of louvers that extend outwardly away from the casing. Each of the louvers is formed with at least one channel shaped corrugation in substantially the top portion thereof for providing the converter with improved characteristics with respect to flow resistance and thermal expansion.

Abstract: Crescent shaped vanes are so disposed in an evaporative cooling tower that the vanes generally have their leading edges aligned with a plane which forms an acute angle with a vertical plane and that adjacent vanes form a continuous smooth curve flow path which is generally directed upwardly and changes less than 90.degree. in direction to form an effective, low-pressure drop drift eliminator.

Abstract: A separator member is formed of separator elements having the cross section of a substantially obtuse triangle and extending obliquely staggered behind and mutually spaced from one another, one side of the triangle extending parallel to the flow direction, pairs of adjacent separator elements, respectively, defining a flow channel flaring outwardly in downstream flow direction. For direct installation into a steam line, the separator member is of conical construction with annular separator elements of increasing diameter.

Abstract: A device for separating multiple-component fluids includes a truncated cone structure having a conical main section defined by a plurality of coaxially aligned and axially spaced rings of progressively diminishing inner diameters as viewed in the direction of movement of the fluids being separated. The largest ring is located at that end of the conical main section at which the fluid is admitted thereto, and the smallest ring is located at that end of the conical main section at which separated solid particles are discharged. Each ring has an inside surface which is convexly curved in a radial cross-section along the axis of the cone structure and faces in part counter to and in part across the direction of fluid flow. The inside surface of each ring meets the bottom surface of that ring in a sharp edge, with the tangent to the bottom surface at that juncture making an angle of at most 90.degree.