Abstract: A conically shaped filtration and/or separation apparatus is provided which is constructed from a stack of filters at least some of which are different sizes superposed above each, other, of said plurality of said filters in a fluid communicable relationship. A collapsible version of such conically shaped filter and/or separation apparatus is provided whereby a plurality of such filters are connected together using two piece interlocking or connecting end caps.

Abstract: The present invention relates to a method for the production of liquid cleaners, consisting of a cleaner housing with a cleaning chamber exhibiting an inner and an outer end, and a cleaning insert arranged inside the cleaning chamber. The cleaner housing is given a conical shape such that the cleaning chamber receives a smaller lateral dimension at its inner end than at its outer end, said outer end being openable. The cleaning insert is manufactured from a fluid-permeable, compressible cleaning material with a lateral dimension that in an initial state, outside the cleaner housing, exceeds the smaller lateral dimension of the cleaning chamber. The other end of the cleaner housing is kept open, and the cleaning insert is inserted into said other end having the larger lateral dimension, and is pressed into the cleaning chamber towards the end having the smaller lateral dimension.

Abstract: A centrifuge screen includes a series of support rods supporting and underlying a series of filter wires. The filter wires have a triangular cross-section and are less than 0.030 inches in cross-sectional width. The filter wires are spaced less than 0.010 inches apart. The screen is a fine opening, high open area screen for use in a centrifuge to separate particulate matter from a liquid.

Abstract: A non-contaminating paint strainer is comprised of a conical receptacle having a conical tapering side wall. The side wall has an inner surface and an outer surface. The conical receptacle defines a lower filtration portion having an aperture provided with reinforcing ribs formed integral with the side wall and extending into the aperture. A filtration mesh screen is secured to the outer surface of the tapering side wall adjacent the aperture and to an outer surface of the reinforcing ribs by glue applied solely to the outer surface of the side wall and outer surface of the reinforcing rib, whereby paint being filtered by the conical receptacle will be in contact solely with the inner surface, free of the glue. Any ink printing is provided on the outer surface of the conical side wall above the mesh screen.

Abstract: A filter assembly (10) for guttering down pipe (12) comprising a hollow body (13) having an internal base (24) and a conical filter (14) located within the body above the base and through which all the water must pass. The body (12) having a pair of opposed couplings (18, 21) for connection into a down pipe (12) and the filter (14) is arranged with its apex directed upwardly in use.

Abstract: A sieve filter for fluid lines, especially for hydraulic pressure lines (2) in internal combustion engines which is formed of a hollow cylindrical main body (3) with a fluid inlet (4) and a fluid outlet (5), and of a fine mesh filter element (6) for through flow by fluid which has a bypass function when the filter element (6) is stopped up or filtering highly viscous fluid. The sieve filter (1) is biased by a spring element (7), and is insertable together with the spring element (7), between two axially spaced opposing surfaces (8, 9) inside the pressure line (2) such that its fluid inlet (4) and the spring element (7) are prestressed against the opposing surfaces (8, 9), whereby the main body (3) of the sieve filter (1) closes a bypass fluid channel passing the filter element (6) which is clearable through an axial displacement of the main body (3) against the force of the spring element (7) resulting from the rise of fluid pressure on the filter element.

Abstract: A screening device includes a screening element connected to a reinforcing element by a frictionally engaging clamping connection. Spacers located between the screening element and the reinforcing element provide a radial clearance therebetween. The screening element can be replaced when worn out, while the reinforcing element and associated parts can be reused with a new screening device. For this purpose, the screening element can be detached from the reinforcing element, which provides the actual support function, as a single unit by way of the frictionally engaging clamping connection. The clamping connection can be implemented by way of wedges or a conical seat.

Abstract: A device and a method are described, which are used for precipitating beverage sediment from the rinsing mixture of beverage production machines and which comprise a rinsing conduit, a sediment receptacle and a filtering means. In order to design a device of this type in a structurally simple manner such that it can be serviced more easily, it is suggested that the filtering means should comprise a first and a second filter which are arranged one after the other when seen in the direction of flow of the rinsing mixture and which are each provided with filtrate discharge means and that a flow connection for the rinsing mixture discharged from the rinsing conduit and for the filter cake precipitated on the first filter should be provided, said flow connection bypassing said first filter and leading into the sediment receptacle.

Abstract: A twist-on renewable filter comprising a one-piece hollow housing, made of polymeric material having a threaded adapter for attachment to a distribution head assembly. The filter housing is fabricated from components that are made of a polymeric material that are fused together to form the one-piece hollow housing. A filter media assembly is rigidly bonded at both ends within the housing. The renewable filter has an infinite life and can be removed and cleaned, for example, by reverse flushing the filter with a cleaning solution. A bypass valve 250 is provided within the filter that is designed to provide full closure for an infinite life. The bypass valve 250 is fully located within the one-piece hollow housing such that it cannot be disabled or tampered with. The bypass valve 250 functions to allow sufficient fluid to bypass the filter media when the filter media has become contaminated and will not permit the full volume of the normal oil stream to be filtered.

Abstract: A hand held spray spout (10) has a basket filter (26) seated against an anti-siphon valve (24) proximate the base end of a water passage (12) within the spout. The filter has a plurality of protrusions (50) mounted within the inner diameter of the valve (24) and is also biased against the rim (52) of the valve. The filter has prongs (56) extending upstream from the basket section (40) to abut and be biased by a supply hose end which is mounted to the base end (14) of the hand held spray spout (10).

Abstract: The invention relates to a filter device comprising a filter housing (10), a filter inlet (12), a filter outlet (14), and a filter element (16) which divides a filter area (18) into two partial areas (20,22). At least one of the partial filter areas is conical in form resulting from the fact that the cross-section of one partial area (20) is tapered from the filter inlet (12) to the filter outlet (14). Said partial areas are separated from each other by said filter element. This results in an optimum residence time distribution inside the filter device at a uniform flow rate, which is particularly useful for highly viscous fluids such as polymer melts or similar.

Abstract: A photocatalyst is carried on a surface of a light guiding body for guiding light needed to activate the photocatalyst in such a manner the light guided by the light guiding body irradiates directly from the surface of the light guiding body the photocatalyst.

Abstract: A filter having a substantially cylindrical or slightly tapered body design which has a plurality of elongated apertures formed therethrough. Each aperture is defined side to side by a pair of elongated, wedge-like rib members disposed one on each side of each aperture, and top to bottom by a pair of cross members which present a substantially square top side and an angularly declining bottom side. The end effect is a substantially rectangular entry aperture for fluid flow with the exception of the declining bottom side which promotes smooth, low resistance entry flow. The present invention is also directed to a method of manufacture of filters having the above-described characteristics. In particular, the preferred method involves an injection molding process in which a molten plastic (such as high-density polyethylene, HDPE) is injected into a two-part mold.

Abstract: A filter for a fuel injection device, comprising a plurality of filter elements arranged within a housing such that, in use, fluid is directed through clearances of predetermined size between respective mutually adjacent ones of the elements for preventing the passage of oversized contaminant particles carried in the fluid.

Abstract: A candle filter element adapted to be located inside a pressure vessel and fixed in a hanging position to a collector tube for aseptic and/or sterile filtration of liquids, has a coupling with conical upper coupling part and a conical lower coupling part, with the conical upper coupling part provided with a rinsing opening and a pair of cams.

Abstract: A sieve filter for fluid lines, especially for hydraulic pressure lines (2) in internal combustion engines which is formed of a hollow cylindrical main body (3) with a fluid inlet (4) and a fluid outlet (5), and of a fine mesh filter element (6) for through flow by fluid which has a bypass function as well when the filter element (6) is stopped up or with highly viscous fluid. The sieve filter (1) is biased by a spring element (7), and is insertable together with the spring element (7), between two axially spaced opposing surfaces (8, 9) inside the pressure line (2) such that its fluid inlet (4) and the spring element (7) are prestressed against the opposing surfaces (8, 9), whereby the main body (3) of the sieve filter (1) closes a bypass fluid channel passing the filter element (6) which is clearable through an axial displacement of the main body (3) against the force of the spring element (7) resulting from the rise of fluid pressure on the filter element.

Abstract: A bag-shaped filter insert made of filter paper for preparing aromatic extracts of coffee or tea includes an upper region and an adjoining bottom region. The bottom region has a lesser permeability than the upper region.

Abstract: A pipe line strainer has a strainer body having an inner body wall surface and defining a flow passageway, and further defining a strainer inlet in communication with the flow passageway and a strainer outlet spaced from the strainer inlet along the flow passageway in a direction for fluid flow, and a strainer basket disposed within the flow passageway between the strainer inlet and the strainer outlet. The strainer basket has a strainer basket wall defining a plurality of through apertures of predetermined cross dimension for flow of fluid from the strainer inlet toward the strainer outlet, the strainer basket wall dividing the flow passageway into a first region of flow upstream of the strainer basket wall and a second region of flow downstream of the strainer basket wall.

Abstract: A combination collar based retrievable drilling fluid filter and wiper with threaded ends for easy inclusion within the drill string, and a through bore for passage of drilling fluids and insertion of a wire line retrievable filter and wiper unit which is concentrically received and supported by the collar. The filter and wiper unit include a filter insert and an elongated wiper carrier. The filter insert is positioned at an upper end of the apparatus and is received by the elongated wiper carrier which is positioned at the lower end of the apparatus. The elongated wiper carrier includes numerous wiper brushes which help remove scale from the interior of the drill string when the filter and wiper unit is retrieved. Electrical wiring passes easily through the apparatus for operation of down hole instruments if desired.

Abstract: A filter unit is disclosed suitable for use in a filter housing. The filter unit comprises superposed and spaced-apart inclined lamellar structures, preferably in the form of hollow truncated cones, each having a lower end side opposite an upper end side and a passage for a flow of liquid between each two of the lamellar structures. Each passage has an inlet for receiving an inflow of liquid to be filtered and an outlet for discharging an outflow of filtered liquid. In each of the passages, an overflow dam wall following a sinuous path is obstructing the flow of liquid and retains particulate matter contained in the liquid. Mounting means are also provided for mounting the filter unit vertically in a filter housing. The invention also concerns a prefilter comprising a filter unit as described above mounted vertically in a filter housing. Such prefilter can advantageously be used at the outlet of a septic tank.

Abstract: A generally funnel shaped paper filter for use in a filter device for preparing coffee or tea extracts. The paper filter has a flattened, folded state and an open, unfolded state for use and includes two facing panels joined at lateral sides thereof to define opposite lateral paper filter edges and joined at bottom sides thereof to define a paper filter bottom; an upper edge forming part of each panel and defining a paper filter opening; and an embossed line provided in each panel for stabilizing the paper filter in its open state.

Abstract: At a distal end of a slide bar 4 which is axially slidably inserted in a through hole 1a of a housing 1 is formed a cylindrical filter chamber 7. The filter chamber 7 has a communicating hole 6 communicating with an inlet 3 provided in the housing 1 and a concave 5 formed at an outer peripheral face thereof except an area adjacent to the communicating hole 6 and communicating with an inlet 2 provided in the housing 1. The concave 5 is provided with a plurality of fitting holes 11 extending from the outer peripheral face toward an axis core of the filter chamber and spaced in circumferential and axial directions with respect to one another. Into each of the fitting holes 11 is inserted a screen cartridge 8 which consists of a breaker plate of a perforated plate in a form of a bottomed conical tube and a net member in a form of a bottomed conical tube.

Abstract: A twist-on renewable filter comprising a one-piece hollow housing, made of polymeric material having threads for attachment to a distribution head assembly. A filter element is adhesively bonded at one end to the floor of the housing and at its opposing end to the top member of the one-piece hollow housing. The one-piece hollow housing has an input opening and a exit opening. The filter housing is fabricated from components that are made of a polymeric material. The renewable filter can be cleaned by the introduction of a cleaning solution in a direction opposite to the direction of normal flow.

Abstract: A method and apparatus for melt spinning molten polymeric material into filaments, preferably embodied in the form of a spin pack assembly, utilizes an annular polymer filter formed of a screen mesh material to have a U-shaped axial cross-section defining an open end oriented to face upwardly for receiving polymer within the annular interior of the screen to flow outwardly therefrom to a downstream spinneret for extrusion. The filter eliminates any need to utilize sand or other filter material contained by the screen as a primary or auxiliary filtration medium and enables effective polymer flow substantially through the entire surface area of the screen without stagnation of material flow.