Abstract: The invention relates to an apparatus for treatment of particulate mixtures such as a mixture of solid particles, which is to be depleted in, enriched by or treated with a fluid, or wherein the mixture acts as a treatment medium for a fluid passing through same. The apparatus is of the type operating with an advancing bed of the particulate material. It utilizes walls permeable by at least a portion of the fluid. The apparatus is of the type of tubular, rectangular or the like vessel having only stationary parts and subdivided by a selected combination of permeable and non-permeable walls into separate chambers into or from which the fluid can be delivered or removed. The movement of the particulate mixture is effected solely by forcing same through a passage having preferably but not exclusively an annular chamber, by pumping, by gravity or by a combination of both. Additional throttling or valve means are employed to selectively control the advancement of the bed through the device.

Abstract: Arc suppressing gas in a high voltage circuit breaker system is collected, filtered and compressed. The compressed gas is passed through a series of oil and desiccant filters and returned to a high pressure vessel for storage. The oil and desiccant filtering system is combined in a single, separable casing including baffles and a check valve.

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 peripheral surface of a coil of a filter web wound about a hollow shaft is covered by a liquid impervious flexible coating, and the outer periphery of a first end of the coil is secured to a supporting disc so that when liquid to be filtered is caused to pass through the coil in the axial direction thereof, the convolutions of the coil near a second end expand radially outwardly to trap contaminants in the spiral gap. Purified liquid collected at the first end of the coil is discharged through the hollow shaft. The filter unit is constructed such that a number of units can be readily connected in series.

Abstract: A valve structure for a fluid dispenser primarily of the type known in the art as an aerosol dispenser incorporating a filter assembly comprising one or more filter elements each formed from an apertured, open mesh material of nylon or like synthetic fiber. At least one of the filter elements is mounted on a filter housing in the form of an auxiliary valve body attached to the primary valve body of the valve structure wherein the path of fluid flow is established from the interior of the dispenser to the valve chamber and the one or more filter elements are disposed in interruptive disposition relative to the path of fluid flow so as to cause filtering of any undesirable particles from the product or propellant as the product is being dispensed.

Abstract: An improved header block for tubular membrane permeator modules, which has particular advantage for ultrafiltration operations, is disclosed. The header block is very compact and is formable by casting or molding and machining. In cooperation with a collector plate and end-plate, it provides both feed (or concentrate) and permeate manifolds. The high pressure differentials and/or cumbersome "turn arounds" or manifolds heretofore used are obviated by said block. A plurality of modules comprising such blocks may be joined side-by-side, in cooperation with appropriate side-plate and gasket means, to provide a variety of flow distributions and/or modes. The header block is uniquely appropriate for handling high volume flow rates required to ensure turbulent, high velocity flow of feed liquid within each permeator tube. The end plates preferably are transparent, to permit facile inspection of the permeate stream from each tube in each module.

Abstract: A wash filter for tapping and filtering a portion of fluid in a moving stream has a plug mounted coaxially in a conduit receiving the stream. The plug includes a bullet-shaped nose similar to that in a conventional wash filter for accelerating the fluid through an annular passageway adjacent the conduit wall, and a porous frusto-conical screen or mesh body portion downstream of the nose and through which a portion of the accelerated fluid is tapped and filtered. Suspended particles in the fluid are driven toward the conduit wall by the plug nose while an inwardly located portion of the accelerated fluid passes inwardly through the porous screen and then through a base of the plug into a separate outlet line arranged coaxially of the conduit.