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3876544 Electrogalvanic filter cell  
A filter cell for coalescing oil droplets dispersed in a water emulsion, including a perforated tubular core into which the emulsion is injected. A layer of emulsion breaking fibrous metallic...
3868325 FILTER TUBE ADAPTERS  
Adapters for insertion into the ends of a filter tube comprising a cylindrical mesh core supporting a fibrous winding. Each adapter includes a sharp annular edge for biting into the interior of the...
3867292 Aquarium filter system  
A unique aquarium filter system is provided comprising a filter element of polyurethane or other open pore material covering the bottom area of an aquarium, and with a plurality of passageways...
3867294 Cylindrical filter elements with improved side seam seal  
Cylindrical filter elements are provided having an improved side seam seal, which can be bonded to end caps in a leak-tight manner.
3865732 Emulsion breaker  
An emulsion breaker featuring a two stage unit, the first stage comprising a resin impregnated fibrous medium including water-resistant, preferentially hydrocarbon-wettable synthetic fibers and...
3861975 FILTERING DEVICE AND PROCESS OF MANUFACTURING THE SAME  
A filtering device including a filter receptacle and a filter element, the inner supporting faces of said filter receptacle and the outer supported faces of said filter element having the shape of...
3862036 APPARATUS AND METHOD FOR RAPID CYCLIC FILTRATION OF CONTAMINANTS FROM LIQUIDS  
Apparatus and method for filtering solids from liquid, including filter means, pump means and valve means operatively connected to one another in conduit means to alternately cause a substantially...
3856674 FILTERING PROCESS AND APPARATUS  
A process and apparatus for filtering a substance flowing through a passage in which a filter is introduced through inlet and outlet ports so that a part of the filter extends across the passage, a...
3856683 DUAL FLOW FLUID FILTER  
A Dual Flow Fluid Filter is provided which comprises a casing open at opposite end and having disposed within the casing a pair of identical filters arranged back-to-back and with a peripheral dam...
3849313 BELT FOR A VACUUM FILTER  
A belt for a vacuum filter has a series of transverse drainage channels formed by ribs running from the outer edges of the belt towards perforations positioned along the longitudinal center line of...
3837495 LIQUID FILTERS  
A liquid (engine-lubricating oil) filter comprising a closed-ended can-type housing, one end closure having oil inlet openings and a centrally disposed oil outlet opening; and a filter element or...
3830373 CORRUGATED DRAINAGE TUBE WITH RESTRAINING SCREEN  
Flexible corrugated drainage tube comprises alternating annular peaks and annular valleys with walls interconnecting peaks and valleys. Plurality of openings in selected valleys of tube are...
3819055 FILTER CUP CONSTRUCTION  
Filter cup construction having a cup-like member, the cup-like member having a stem-like cup portion and a funnel-like portion adjoining the stem-like cup portion. The funnel-like portion is...
3812972 LIQUID FILTER AND METHOD FOR FABRICATING SAME  
A liquid filter including at least two filter members having continuously contacting opposing surfaces, the members each being fabricated of a non-porous material, wherein at least a segment of a...
3811659 ARCHED STRAINER PLATE FOR PLASTIC AND LIKE MATERIAL  
This invention relates to strainers and particularly to strainers for straining plastic, visco-elastic, or highly viscous, rubbery materials and more particularly to a strainer having an improved...
3800945 CELL HAVING CATALYTIC ACTION FOR COALESCING OIL DROPLETS  
A cell having catalytic action for coalescing oil droplets dispersed in a water emulsion including a perforated core into which the emulsion is injected, a layer of emulsion breaking fibrous...
3782554 PRESSURES FILTERS AND FILTER ELEMENTS THEREFOR  
A tube pressure filter is provided with a filtering means which comprises (a) filtrate receiving and drainage member including a wire mesh sleeve which is of a size such that it fits closely over...
3771661 MULTIPLE FLUID FILTER PLATE ASSEMBLY  
This disclosure pertains to the construction of assemblies of panel-type adsorbers or filters for fluids using components readily standardized to facilitate a variety of available flow patterns...
3747770 FILTER SCREEN  
There is provided an improved filter medium characterized by a very fine mesh woven wire straining fabric supported on a relatively large open mesh grid having substantially planar faces and...
3735871 FILTER JACKET FOR COOKING OIL  
A jacket of cloth for a paper and wire mesh filtering assembly presently employed for cleaning fried food cooking oil which enables cleaning of the filter assembly by scraping the surface of the...
3728061 MULTI-LAYER SPINNERETTE WITH HEAD FILTER  
The central cavity of a spinnerette head assembly for the extrusion of synthetic polymer filters is substantially filled with tubular filters closed at one end and communicating with extrusion...
3670898 FILTER HAVING A FLEXIBLE WALL FOR FILTERING LIQUIDS  
An apparatus for filtering a fluid medium, for example, dirty swimming pool water, comprises a hollow filter sleeve having a flexible wall which wall is caused to deform by the pressure of fluid...
3645398 COALESCER CARTRIDGE AND COALESCER FOR OILY WATER  
A replaceable coalescing cartridge, capable of use in any commercial coalescer, comprising an upstream coalescing section and a downstream bubble breaking section, transforms small diameter oil...
3620375 FILTER CONSTRUCTED OF METALLIC MATERIAL  
In a filter for use in removing entrained matter contained in a flowing material, a series of superimposed layers of a metallic filtering composition forms an inner core that is encased...
3619718 METHOD AND APPARATUS FOR NEUTRALIZING ELECTROSTATIC CHARGES ON FLOWING LIQUIDS  
A method and apparatus whereby electrostatic charges contained in a liquid ydrocarbon are neutralized by utilizing filters which impart opposite charges to the liquid. An organic filter element...
3578175 HELICALLY WOUND SEMIPERMEABLE MEMBRANE  
A membrane element, useful in treatment of a solution by osmosis or reverse osmosis, comprises a porous support structure around which is a semipermeable membrane preferably formed by helically...
3556304 PLASTIC FILTER CANDLE  
A filter which consists of a foraminous tubular spacer made of two layers of integrally extruded filaments with one end closed with a welded-on cap and the other end provided with a flange and...
3556299 FLUID DISTRIBUTING CONDUIT FOR PROCESSING APPARATUS  
A fluid distributing conduit for conveying fluid under pressure to materials confined within a process vessel includes a feed pipe having a series of holes and a cylindrical elongated member...
3551287 TOTALLY INORGANIC PAPERS AND MEMBRANES SUITABLE FOR ION EXCHANGE MADE OF CERIUM (IV) PHOSPHATE AND PROCESS FOR PREPARING THE SAME  
3542195 FILTER CARTRIDGE  
3528547 WATER SENSITIVE FLOW MONITOR  
3528546 WATER SENSITIVE FLOW MONITOR  
3519560 METHOD AND APPARATUS FOR REMOVING WATER FROM FLUIDS  
3516540 FILTER WITH AUTOMATIC SHUTOFF  
3511382 DEVICE FOR DETECTION OF ABNORMAL MILK  
3498464 KNOCK-DOWN FILTER  
3493119 FILTER DISC CONSTRUCTION  
3487940 LIQUID FILTER ASSEMBLIES  
3482703 PARTICULATE AND BIOLOGICAL FILTERS  
3481479 VACUUM FILTER  
3478498 FILTER STRUCTURE  
3471028 MICROFILTER UNIT  
3460680 FILTER MEDIA SUPPORT WITH FILTER MEDIUM  
3455459 FILTER  
3448862 FILTER MEDIA HAVING AN INCREASED FILTER AREA  
3430770 REVERSE OSMOSIS APPARATUS  
3428184 SCREENS FOR REMOVAL OF LIQUID FROM SLUDGE MATERIALS  
3419151 Strainer bag construction  
3415382 Filter utilizing glass balls for filtering fluids  
3415384 Elements for removing contaminants from liquid