Abstract: A dust filtering and collection system for filtering dust and other debris particles from an incoming dust laden air stream, such air stream generally being used for conveying granular material into or from a bulk tank trailer, a railroad car, or other conveying vehicle, the filtering system designed to be functioned by vacuum air pressure, operatively generated by a blower, to draw in the soiled air into the system, to cleanse such air for further use in the conveying of the granular material. The air flow may be reversed, to provide for a dislodging of any dust particles from the filtering system, and to cleanse the filter for further efficient usage of the system in conveying granular material into or out of the tank trailer, or other vehicle during usage.

Abstract: A cam assembly of a cam and a cam post replace each threaded fastener used in attaching a tube plate to a support ring of a bulk tank filter canister. A plurality of cam assemblies replace the threaded fasteners of the filter canister and enable the tube plate to be easily and quickly separated from the support ring when servicing the filter tubes suspended by the tube plate in the filter canister.

Abstract: A filtration system for a dry bulk tank trailer includes a filter canister containing a filter media in the interior volume of the filter canister. The filter media divides the interior volume of the filter canister into a dusty air side and a clean air side of the interior volume on opposite sides of the filter media. A dusty air line operatively communicates the dusty air side of the interior volume with the dry bulk tank. A fitting operatively communicates with the clean air side of the interior volume. The fitting is operable to selectively communicate a vacuum pressure and a positive pressure to the clean air side of the interior volume.

Abstract: A pressure and heat molded polymer tube, formed of miniscule polyethylene beads, each in the vicinity of 115 um powder in diameter, which when compression molded forms pores that are of uniform diameter throughout their length within the range of 5 um-10 um, the tube having an upper flange, that mates within a correspondently shaped grommet, which when applied to the transverse plate of an air filtration housing, functions to cleanse highly efficiently the dust particles and debris from the air being filtered, when passing through the filtration system, so that such purified air can be discharged safely.

Abstract: A pressure and heat molded polymer tube, formed of miniscule polyethylene beads, each in the vicinity of 115 um powder in diameter, which when compression molded forms pores that are of uniform diameter throughout their length within the range of 5 um-10 um, the tube having an upper flange, that mates within a correspondently shaped grommet, which when applied to the transverse plate of an air filtration housing, functions to cleanse highly efficiently the dust particles and debris from the air being filtered, when passing through the filtration system, so that such purified air can be discharged safely.

Abstract: A dust filtering and collection system for filtering dust and other debris particles from an incoming dust laden air stream, such air stream generally being used for conveying granular material into or from a bulk tank trailer, a railroad car, or other conveying vehicle, the filtering system designed to be functioned by vacuum air pressure, operatively generated by a blower, to draw in the soiled air into the filter system, to cleanse such air for further use in the conveying of the granular material. The air flow may be reversed, to provide for a dislodging of any dust particles from the filtering system, and to cleanse the filter for further efficient usage of the system in conveying granular material into or out of the tank trailer, or other vehicle during usage. The filter system includes a pod of filter tubes encapsulated by a polymer header that mounts to a transverse plate that secures to the approximate upper end of the filter canister of the filtration system.

Abstract: A dust filtering and collection system for filtering dust and other debris particles from an incoming dust laden air stream, such air stream generally being used for conveying granular material into or from a bulk tank trailer, a railroad car, or other conveying vehicle, the filtering system designed to be functioned by vacuum air pressure, operatively generated by a blower, to draw in the soiled air into the system, to cleanse such air for further use in the conveying of the granular material. The air flow may be reversed, to provide for a dislodging of any dust particles from the filtering system, and to cleanse the filter for further efficient usage of the system in conveying granular material into or out of the tank trailer, or other vehicle during usage.

Abstract: A dust filtering and collection system for filtering dust and other particles from an air stream generally being used for conveying granular material into or from a bulk tank, with the filtering system designed to incorporate structure, such as a specially designed grommet, for holding a porous filter tube for filtering out such dust particles, with a grommet having structure to provide for its interlocking and engagement with and through an aperture in a transverse plate within the system. The grommet has an upper flange, that engages the upper surface of the transverse plate, and has an inner flange for engagement with the upper edge of the filter tube, while the bottom of the grommet has resilient fingers and associated detents for engaging the bottom of the transverse plate, to furnish an interlocking of the grommet, with its supported filter tube, onto and through the transverse plate.

Abstract: A composite handle assembly has a primary handle bar having a proximal end portion and a distal end portion, the primary handle bar having a first offset bend and a second offset bend and a step portion between the offset bends, the distal end having a cored head portion and a retaining tab, a handle plate having a retaining slot for receiving the retaining tab, a lock lever member having a proximal end portion and a distal end portion, the lock lever member having a first offset bend, a second offset bend, and a step portion between the offset bends, and a pivotal connection for connecting the lock lever member within the primary handle