Abstract: Three embodiments of a self-retaining fluid system component insert for a smooth bore of predetermined diameter. The insert comprises a helical coil spring with one end thereof connected to the component and having, in its relaxed state an outer diameter slightly greater than the bore diameter to frictionally lock the insert within the bore. The insert has a threaded connector for receiving an elongated tool for mounting the insert by rotating the insert in one angular direction thereof for contracting the coil by its frictional engagement with the smooth wall of the bore.

Abstract: A disc-type filter including a housing having an inlet connectable to an upstream pipe, and an outlet connectable to a downstream pipe; and a stack of discs disposed within the housing for separating solid particles from a fluid flowing between the discs from the upstream side of the stack to the downstream side thereof; characterized in that the stack includes:a plurality of cooperating filter elements defining a plurality of paired co-operating filter surfaces, including a first surface having a large surface area and a second surface contacting only a portion of the large surface area of the first surface and leaving a portion of the large surface area on the upstream side of the stack not contacted thereby, at least one of said first and second surfaces being formed with grooves at the areas at which the first and second surfaces contact, thereby to form:(a) compartments on the upstream side of the stack for accumulation of solid particles; and(b) edge filtering passageways extending along the grooves in

Abstract: A fluid filtering stop valve having a body with a cylindrical chamber having a circumferential sidewall with inlet, outlet and flush ports, and a cylindrical plug member rotatably disposed in the chamber. The plug member has spaced apart first and second circular plates with an off-center filtering screen extending therebetween. The plug member is rotatably between a filtering position in which the screen is located in the fluid flow between the inlet and outlet ports, a backflushing position in which the screen is located in the fluid flow between the inlet and flush ports, with the filtering side of the screen toward the flush port, and a closed position in which an arcuate plate washer loosely retained between the first and second plates is positioned to seal the flush and outlet ports. In the filtering position the washer seals only the flush port and in the flush position the washer seals only the outlet port. The screen uses outwardly diverging ribs to reduce lodging of material between the ribs.

Abstract: A first container for receiving fine-grained material to be dewatered with a concentric outer second container for receiving material from the first container and separating liquid, means for driving the containers in unison, circumferentially separated radial first and second plates connected to the first and second containers respectively, rubber blocks between the plates, and means for separately imparting vibration motion to the first and second containers with the vibrations being accommodated by the rubber blocks.

Abstract: A distinct element employed in a preferred embodiment of the invention resides in a two-compartment filter unit that extends operating life by permitting the function of the first compartment filtration to be transferred to the other compartment when the first compartment is clogged.

Abstract: A rotary vortex separator for heterogeneous liquids, e.g. water with a small oil content on an offshore oil platform, includes injection channels (30) which inject water to be de-oiled at an axial speed relative to the periphery of the separator at the upstream end (4) of a cylindrical separation chamber (2) rotating about its axis (8). Purified water leaves from the other end (6) of said chamber via an annular outlet opening (26) of smaller radius to constitute a free vortex type of flow. The oil is removed by an axial tube (28).

Abstract: A filter housing comprises a body (1) designed to provide at least one flow path (8) therein. A filter may be secured to the body in operative connection with the flow path. The flow path opens into a substantially planar external face (9) of the body, and behind that external face the body is formed with passages (15a) lying one to each side of the opening, each passage having an internal wedge face facing away from the external face (9) and lying in a plane that makes an acute angle with the plane of the external face. When two such housings are placed with their planar external faces one in contact with the other and with their flow paths in axial alignment, they may be connected together by drawing wedge members (20) into the passages of the respective housings to draw the housings tightly together.

Abstract: A filtration sector for making up a filtration disc comprising a rigid frame imparting its shape thereto, supports for filter cloth within the frame and a member for connection to a hollow driveshaft of a rotary filter, said shaft containing liquid and gaseous fluid collectors, which is characterized in that said sector is of an increasing internal thickness from its peripheral end to its end in the vicinity of the hollow driveshaft (2).

Abstract: An oil separator, for use in the compressor discharge of a refrigeration system, has a turbine wheel on which refrigerant vapor impacts positioned within a vessel so that the oil is slung outwardly and impinges on the side walls of the vessel and the oil-free vapor is deflected 180.degree. to flow upwardly through the turbine wheel for discharge from the vessel.

Abstract: In a disposable biomedical system for processing fluids in a closed environment such as a plasmapheresis system, comprising a plastic rotor mounted for rotation on a pivot pin bearing and a seal, particularly a silicone lubricated O-ring seal, between the rotor and pin, the improvement wherein said pivot pin is a molded pivot pin of a hard plastic material having a low coefficient of friction and lubriciousness, and which is capable of being irradiated by gamma radiation for sterilization and modification of the plastic material without degradation or loss of lubricious properties. The pivot pin bearing preferably comprises an injection molded polyamide based resin.

Abstract: A disposable diagnostic plasma filter dispenser includes a low cost disposable container and a rotor drive for rotationally energizing a rotor within the container. The disposable container is particularly suitable for drawing and dispensing blood samples for clinical analysis and includes a tube shaped outer wall having a frangible dispenser outlet cover, a close fitting inner tube supporting a filter membrane and a unitary rotor disposed for axel free rotation and axial translation within the inner tube in response to energization from the rotor driver. The rotor produces vortex enhanced filtration while maintaining a flow of filter fluid through the filtration gap and creating a transmembrane pressure.

Abstract: A portable water purification system includes a generally rectangular boxlike chest containing a particulate matter prefilter, a reverse osmosis filter and an activated carbon postfilter unit disposed in a lower base part of the chest. The prefilter, reverse osmosis filter and postfilter units are connected in series by flexible conduits. The chest includes a removable tray section provided with receptacles for receiving a plurality of connector assemblies, a raw water diverter valve, and flexible conduits interconnecting the filter units with the raw water source, a waste water discharge line and connector assemblies for serially connecting a plurality of pure water storage containers comprising conventional plastic milk jug type containers.

Abstract: A yarn-threading method and device wherein a suction gun being fed with a pressurized liquid jet of not less than 80 kg/cm.sup.2 G is placed next to a running yarn; the yarn is attracted and taken into a yarn-guide hole of said suction gun, producing a state of attracting the yarn running at a speed of not less than 4,500 m/min.; and with this state of the yarn being maintained, the suction gun is moved to thread the attracted yarn on a winder means rotating at a speed of not less than 4,500 m/min.

Abstract: A novel elution complex is provided more especially for affinity chromatography and affinity precipitation for recovering in particular luciferase hexokinase and lactate dehydrogenase.This complex comprises 1 mM to 30 mM of MgSO.sub.4, from 30 mM to 50 mM of EDTA, possibly about 5 mM of ribose or mannose and possibly about 1 mM of DTT.

Abstract: This invention provides a novel apparatus for removing contaminants from diesel fuel while simultaneously heating such fuel, and provides a collection zone for accumulating separated water and other contaminants.

Abstract: This invention relates to a method and apparatus for constructing and refurbishing rotary drum filters having longitudinal compartments, or grids, along the deck periphery. The method includes installing novel single-leg grid extensions, angle grid extensions or T-shaped anti-rewetting grid extensions by means of pins seated in slots cut in the deck grids to a uniform depth with respect to the theoretical centerline of the filter drum. This procedure eliminates the requirement for conventional machining of the grid outer edges to a fixed radius with respect to the theoretical drum centerline. The apparatus includes spaced slots cut to a predetermined depth in the extending surfaces of the grids and pins extending through the elongated grid extensions for seating in the slots and precisely locating the grid extensions on the grids at a common radius extending from the theoretical centerline of the drum.

Abstract: A quick release cover assembly for a cylindrical liquid filter housing which includes an outer cover plate pivotally mounted on the filter housing, an inner cover plate having a beveled cylindrical side wall and being carried by the outer plate and an O-ring which is disposed about the beveled wall of the inner plate adjacent the under side of the outer plate. A plurality of locking dogs are carried by the upper surface of the outer plate which are adapted to be inserted and rotated within a corresponding plurality of L-shaped slots adjacent the open end of the filter housing. A threaded fastener is provided for drawing the inner and outer plates together upon the locking dogs being so disposed within the slots in the housing so as to press the O-ring outwardly against the interior wall of the filter housing thereby releasably sealing the cover assembly to the housing.

Abstract: A water and sewer treatment rectangular tank is provided wherein substantially all the working parts are made of non-metallic material. The system includes a telescoping non-metallic drive shaft connected to sprockets for driving chain with the sprockets being mounted to non-metallic stub posts which are mounted to the side walls of the tank.

Abstract: A removable threaded oil filter adaptor collar and a removable outer decorative cover for an oil filter are disclosed.

Abstract: A hydrocyclone heavy fraction outlet unplugging grommet for use in hydrocyclone systems is described. The grommet is self-sealing under the pressures encountered in use and will effectively seal around a relatively large water nozzle inserted therethrough in the course of an unplugging operation.

Abstract: A filter head for spin-off filters comprises an extruded body having a first longitudinal bore and a second longitudinal bore separated from each other, and an elongated, laterally expanded flat exterior surface. Fluid passageways are bored through the flat surface to intersect with the longitudinal throughbores so that separated inlets and outlets in the spin-off filter can be fluidly connected with the longitudinal bores. Preferably, the extruded body also includes a mounting flange offset from the flat longitudinal surface so that the filter head can be mounted to a surface which does not interfere with the installation or removal of the filter. The elongated extruded body is cut to any desired length required for mounting one or more filters of various sizes against the longitudinal flat surface.

Abstract: A self-sealing neck for an oil filter comprising a filter body provided with an opening which is surrounded by a collar. The self-sealing neck includes a coupling having a central bore with an enlarged recess at one end, an outwardly extending flange at the one end, a gasket fitted or molded over the flange and covering the front end and has an inner portion seated in the recess. The self-sealing neck overlies the collar with the gasket engaging the filter body with the portion of the gasket in the recess frictionally clampingly engaging the collar and the flanged portion also sealing against the filter body.

Abstract: A microscreen support wheel and assembly is provided comprising a polymeric support wheel having a crowned tread surface, an annular stress relief groove cut into each of its vertically flat, substantially parallel side faces and an axial bore designed to rotate around an axis included in a support wheel assembly constructed and arranged to hold a pair of microscreen support wheels in a laterally adjacent relationship on a rigid microscreen frame at an angle whereby optimum drum support is achieved.

Abstract: It is intended to simplify and make easier cavitation treatment in a process and equipment for treatment of liquid/solids mixtures, in particular for conditioning of suspended solids by means of cavitation. In the process, this is achieved by means of the fact that the material mixture to be treated is withdrawn from a high-level reservoir, passed through at least one pipe bend and then to a drop-pipe in such a way that a cavitation zone forms in the flow at least in areas upstream, within and downstream of the pipe bend and in terms of equipment by means of the fact that the equipment consists of a high-level reservoir (1), an outlet nozzle (2) preferably in a horizontal position, at least one pipe bend (3) connected to the outlet nozzle (2), and a drop-pipe (4) and a control valve (5) in the vicinity of the end of the drop-pipe.

Abstract: A heatable fuel filter for a motor vehicle engine is provided wherein an electric heating element is positioned between a filter head and filter box. In order to prevent fuel contained in the filter head and fitler box from being discharged to the surroundings when the filter box is changed, the filter box is provided with an element for collecting and containing this fuel. A lid container provided for the filter box is filled by the heating element when the filter box is attached to the filter head and heating element. When the filter box is removed from the heating element and filter head, the volume previously occupied by the heating element becomes available for collecting and containing residual fuel flow from the filter head and heating element. The lid container preferably has a volume greater than the volume of fuel contained in the filter head and the heating element.

Abstract: A filter suitable for press fitting into an assembly for inline filtration is disclosed. The filter includes a base, filtration material supported on the base, and a metal collar surrounding at least a portion of the base with a portion of the metal collar embedded in the base. The leading edge of the collar and anchor tabs on the distal end of the collar are embedded in the base and thus secure the collar to the base. The collar also has a rounded entry corner which provides a smooth entry into the press fit hole when the filter is pressed into place.

Abstract: Method and apparatus for hydraulically disposing of animal waste utilizing a water container in which the waste is stored temporarily. Duct work supported in the container is connected to a pressurized water source effective to aspirate water and waste into a submerged inlet and conducting it to a place of waste disposal. A jet of pressurized water aids in comminuting the waste, circulating the same past the waste inlet, and in flushing away larger elements tending to obstruct the inlet.

Abstract: A fluid filtering stop valve having a body with a cylindrical chamber having a circumferential sidewall with inlet, outlet and flush ports, and a cylindrical plug member rotatably disposed in the chamber. The plug member has spaced apart first and second circular plates with an off-center filtering screen extending therebetween. The plug member is rotatably between a filtering position in which the screen is located in the fluid flow between the inlet and outlet ports, a backflushing position in which the screen is located in the fluid flow between the inlet and flush ports, with the filtering side of the screen toward the flush port, and a closed position in which an arcuate plate washer loosely retained between the first and second plates is positioned to seal the flush and outlet ports. In the filtering position the washer seals only the flush port and in the flush position the washer seals only the outlet port. The screen uses outwardly diverging ribs to reduce lodging of material between the ribs.