Abstract: Filtration apparatus that is very versatile is disclosed. The apparatus includes a porous filter disc that can be readily interchanged with other filter discs having the same or different porosity. In addition, a membrane filter can be used in conjunction with the porous filter disc. The porous filter disc serves as a support for the membrane filter. The porous filter disc and membrane when provided are designed to interfit with the balance of the filtration apparatus in such a manner that the filtration unit is simple in construction and highly versatile in use.

Abstract: The disclosure relates to a self-cleaning strainer or filter that has a freely rotatable agitator means mounted within an annular straining element. The agitator means consists of a series of multi-bladed elements of progressively increasing diameter that creates a turbulent flow that prevents material from adhering to the screen.

Abstract: An improved oil deaerator having an entrance tube with holes to allow much of the air to escape prior to entering the deaerator entry tube which is inclined and flattened causing the air/oil mixture to flow against the inside of the cylinder with the oil going to the outside and out the bottom louvers and the air escaping through a spout at the top. The unique design of the bottom with slotted or louvered oil exit openings and double cylinder arrangement reduces the possibility of the formation of a vortex.

Abstract: This invention provides vertically disposed fiber bed elements and separators containing the same wherein "bubble re-entrainment" of a collected liquid phase in a gas stream flowing through the fiber bed is substantially eliminated or reduced. "Bubble re-entrainment" refers to that re-entrainment of liquid which occurs at the bottom of the fiber bed where the cumulative drainage of the liquid is at its maximum. This is accomplished by providing at the bottom of the fiber bed a vertically disposed gas flow baffle means such as, e.g., a baffle plate, such that some portion of the fiber bed is disposed downstream of the baffle means and shielded by the lee side of said baffle means from the moving gas stream, said shielding being effective throughout the shielded portion of the fiber bed to reduce the bed velocity of any gas flowing therethrough to below a bubble re-entraining velocity.

Abstract: A self supporting-one piece resilient metal wire cloth filter having an integral and permanent bypass opening (window), the filter being removably disposed in the inlet duct of an internal combustion engine radiator. The filter can be removed, flushed, and reinstalled to remove foreign particles entrained with the liquid coolant as the latter circulates, thus permitting continued high efficiency of heat transfer from the hot cylinder to the coolant and from the coolant to the radiator core.

Abstract: There is shown an oil recovery apparatus and method which includes a plurality of like-sized disks carried on a rotatable shaft. These disks are partially immersed in the fluid which contains the unwanted oil or oil-like material to be removed or recovered from the larger body of fluid. The disks are preferably of plastic or are plastic coated and during immersion the oil contaminator is picked up by and with the engagement of the disks in the oil portion of the fluid after which plastic scraper blades engage the sides of the disks to remove this oil from the sides of the rotating disk. The scrapings which are removed are fed by a channel guideway or ways to a collector. Two arrangements of plastic scraper assemblies are shown. In one embodiment there are two blades arranged to straddle the disk and simultaneously scrape opposite sides of this disk as the disk is rotated. The removed oil is carried by two conductors to a collector.

Abstract: The invention relates to a device for assembling stacked annular filtering elements under constant pressure. The device comprises a support which provides an abutment for one end of the stack of filtering elements, a presser member which provides an abutment for the other end of the stack, and a calibrated spring which biases the presser member towards the support while trapping the stack of elements between the two abutments. The device is useful for the manufacture of filters used particularly for the filtration of oils.

Abstract: A centrifugal separator for separating suspensions of oil mist in air and especially intended for use with aircraft engines comprises a rotatable chamber filled with a relatively rigid porous material and driven by a hollow shaft.An inlet for the suspension is provided in one end wall of the chamber and separate outlets for oil and air in the form of an apertured chamber outer wall and apertures in the shaft respectively.

Abstract: Apparatus is disclosed comprising a reusable filter insertable in an enclosure having openings therein for the passage of a cleaning fluid through the filter and out of the enclosure. The enclosure may comprise a cylinder into which the filter is inserted.The filter element in one embodiment comprises a resilient filter windable on itself for insertion in the enclosure which may comprise a cylindrical enclosure.

Abstract: A system for degassing fluids, particularly drilling muds, which includes a pump for introducing the gas laden fluid, under pressure, into a closed degassing vessel wherein the gas is disengaged, in a substantially oxygen free atmosphere, from the fluid, the gas and degassed fluids leaving the degassing vessel through a common outlet which is equipped with an exhausting system for discharging the disengaged gas from the system.

Abstract: An improved extracorporeal circuit blood filter of the type using filter media in the form of a cartridge wherein the improvement comprises an internal bypass directly through the cartridge. The bypass is actuated should the filter media become blocked.

Abstract: A filter used in irrigation systems comprises a hollow screening and filtering body with inlet and outlet ports. A Venturi pipe is connected with the interior of said body. The screening and filtering body is placed in a casing which has an outlet. A conduit leads from the interior of the screening and filtering body into a container. From the interior of that container a further conduit leads to a point substantially co-incident with the throat of the Venturi pipe. The said further conduit is closed at its end positioned within the container. That portion of the said further conduit which extends within the container is permeable to liquid. The container has a flushing inlet and a flushing outlet.

Abstract: A personal monitoring device, dosimeter, or badge-like apparatus for measuring the exposure of personnel to pollutant toxic organic vaporous materials, notably vinyl chloride, comprised of a body portion provided with a relatively shallow top cavity, or cup-like member completely filled with an adsorbent, absorbent or reactive material, preferably activated carbon, covered, closed and physically held in place by a contiguous, thin non-porous membrane, permeable to the organic vaporous materials, notably vinyl chloride. The polluting toxic material, e.g., vinyl chloride, permeates and is transported through the membrane and is then adsorbed on the activated carbon at a rate proportional to the external concentration during the period of exposure and is subsequently removed for analysis, as by gas chromatography. The device is simple in construction, easy to use, insensitive to temperature and humidity effects, and free of other possible interferences.

Abstract: Apparatus is connected in the liquid system for separating gas from the liquid, for example. The gas laden oil is directed into a filter positioned within a housing. The filter is of a material sufficient for separating gas bubbles from the oil while passing the oil therethrough. The separated gas passes upwardly and through a gas outlet opening out the top portion of the housing. Degassed oil passes through the filter and from the housing at a location adjacent a bottom end of the housing.

Abstract: A self-cleaning filter includes a housing having a compressible filter element and a compression spring for applying spring pressure to the filter element. Unfiltered fluid, at line pressure, is forced upwardly through the filter element. Spring tension is overcome by line pressure during normal filtering operations to compress the spring and allow the filter element to maintain a relatively uncompressed condition during filtering. The spring tension is sufficient to automatically compress the filter element when line pressure is shut off to squeeze the filter element and flush out filtered particles from the filter element into a chamber below it. Separate agitators in the chamber rapidly spin and move in a random pattern throughout the chamber to keep the walls of the chamber clean from filtered particles during filtering operations. The chamber may have an automatic drain valve which automatically opens when line pressure is shut off to discharge filtered particles from the housing.

Abstract: A blood filter unit comprising an assembly for supporting a filter cartridge, a filter cartridge, and a housing for the assembly and cartridge. The assembly for supporting the cartridge comprises a permeable cylindrical core with a bottom member and a top cap. The filter media, in the form of a cartridge, is disposed about the periphery of the core and extends between the bottom member and top cap. The core contacts the media only at intermittent areas spaced longitudinally and circumferentially about the core. The core, media and walls of the housing are tapered with respect to each other.

Abstract: In a dynamic solids concentrator having a rotor with radially extensive disc-like elements which rotate adjacent other stationary or rotating disc-like elements, stabilizing members are provided along radial edges of the respective elements. In the case of the rotating elements, the stabilizing members are stabilizing fingers which ride within guide members on or guide paths in the inner walls of the concentrator and, in another embodiment, T-shaped stabilizing members whose arms ride on the surfaces of adjacent disc-like elements. In the case of the non-rotating elements, the stabilizng members are stabilizing fingers which ride within the guide members on or guide paths in the concentrators's rotor shaft. The fingers, T-shaped members and their cooperating guides stabilize the relative positions of the disc-like elements within the concentrator under conditions in which pressure differentials within the concentrator or high rotor speeds would otherwise disturb their relative positions.

Abstract: The water and oil that is normally collected in the bilge of small boats is pumped overboard by a bilge pump with the oil being removed from the bilge water by a filter having layers of different size expanded resin particles that are hydrophobic and oleophilic. When operation of the bilge pump ceases, a valve will release the back pressure that would otherwise be caused by the filter, to facilitate start-up of the pump. At the discharge and visible on the exterior of the boat, there is an indicator that will change color when it is in contact with oil, to provide a visual indication when the filter needs changing.

Abstract: A filter-drier unit adapted for bidirectional flow in heat pump systems. This filter-drier unit includes an individual filter-drier in each compartment formed on opposite sides of a partition in a shell. A conduit connects the inlet of each filter-drier with the compartment other than the one in which the filter-drier is located. A check valve is connected to the outlet of each filter-drier to enable flow into the compartment in which the filter-drier is located and to preclude backflow, whereby flow into either one of the compartments through an associated shell port passes by the filter-drier in the said one compartment and through the inlet of the filter-drier in the other compartment, and thence into the said other compartment and out through its associated shell port. In one embodiment, the individual filter-driers and the fittings attaching the filter-driers to the partition are relatively laterally offset in the shell.

Abstract: A cylindrical fuel cap having a first chamber filled with vapor absorbent material, a second chamber filled with air filtering material, and a one-way check valve for establishing communication between the atmosphere and the interior of the fuel cap is placed in a fuel inlet line of a fuel tank to trap fuel vapors in the tank preventing them from being emitted to pollute the atmosphere and to provide a fuel vapor reservoir for augmenting the fuel used for combustion in an internal combustion engine, oil burner, and the like, upon demand.