Self supporting hot gas filter assembly

A diesel exhaust particulate filter comprising:

• an elongated rigidized support tube having an interior surface and an exterior surface, the support tube defined solely by a formed textile constructed from a continuous filament inorganic yarn, the formed textile being porous to permit an exhaust gas and particulates therein to pass through the support tube;
• and
• a filtering element disposed on at least one surface of the support tube, the filtering element formed to trap particulates in the exhaust gas.

An end cap for use with a filtering assembly for filtering a particulate bearing gas, the filtering assembly having at least one open end, the end cap comprising a first collar coaxially aligned with a second collar, the first collar and the second collar secured to a base plate such that the first collar is positioned within the second collar, the second collar having a plurality of tabs positioned about its circumference, the tabs extending in the axial direction of the collar, the space between the first collar and the second collar defining a recess, the recess of size sufficient to allow insertion of an open end of the filter assembly into the recess, the filter assembly secured within the recess by deforming the tabs on the second collar toward the first collar, thereby clamping the filter assembly between the first collar and the second collar.

A method of making a cartridge that is useful in a diesel exhaust particulate filter, a method comprising the steps of:

• providing an elongated support tube having an interior surface and an exterior surface, the support tube defined solely by a formed textile constructed from a continuous filament inorganic yarn, the formed textile being porous to permit an exhaust gas and particulates therein to pass through the support tube;
• and
• wrapping a filtering element about the exterior surface of the support tube, the filtering element formed to trap particulates in the exhaust gas.