Abstract: The specification discloses a two-piece twist apart filter housing adapted to be interposed in a conduit supplying or receiving air or other medium from a device, wherein the two parts of the housing can be twisted apart to permit replacement of the various types of filter media without detaching either end of the filter housing from said conduit. There are also disclosed particular filter assemblies utilizing said filter housing wherein there is provided a particulate filter, a coalescing filter, and an odor filter assembly which can easily be removed and replaced when needed without removing the filter housing from the supply line.

Abstract: The specification discloses a novel Coalescing Demister having, depending on the direction of air flow, an inner or outer prefilter-precoalescer subassembly consisting of one or more layers of glass fiber cloth sandwiched between two screen-type retainers, and an inner or outer coalescing subassembly consisting of an inner and outer perforated retainer having a formed glass fiber coalescing media formed there between, together with a layer of synthetic cloth to act as an anti-channeling layer, if desired. The prefilter-precoalescer subassembly, and the coalescing subassembly with drain and anti-migration layers are potted between two end caps with suitable openings therein for the normal oil scavenging tubes.

Abstract: The specification discloses a novel composite coalescing filter tube and the method of making the same. In contrast to previous coalescing filters, which had layers of filter material sandwiched between relatively rigid support members, the present invention provides for a completely unitary coalescing filter tube wherein the various layers of the filter are successively vacuum formed one over the other on a forming fixture which is submerged in an appropriate glass fiber slurry mix, with the various layers being air dried, epoxy dipped, and cured as needed for the particular application. Since, during the vacuum forming process, glass fibers from one layer will interlock with glass fibers from the previously formed layer, a completely unitary coalescing filter tube is formed, preventing the problems of filter layer separation, channeling, pressure collapse and vibration damage which have occurred in past coalescing filters.

Abstract: The specification discloses a novel composite coalescing filter tube and the method of making the same. In contrast to previous coalescing filters, which had layers of filter material sandwiched between relatively rigid support members, the present invention provides for a completely unitary coalescing filter tube wherein the various layers of the filter are successively vacuum formed one over the other on a forming fixture which is submerged in an appropriate glass fiber slurry mix, with the various layers being air dried, epoxy dipped, and cured as needed for the particular application. Since, during the vacuum forming process, glass fibers from one layer will interlock with glass fibers from the previously formed layer, a completely unitary coalescing filter tube is formed, preventing the problems of filter layer separation, channeling, pressure collapse and vibration damage which have occurred in past coalescing filters.