Other

Isp Investments Inc.

Gaf Corporation

Gaf Chemicals Corporation

H-tech, LLC

Moshe Gershenson

Walter A Booth

Mark L Moskowitz

Edward G Malawer

J Michael Donahue

Leonard Falcone

John Dragasevich

Thomas Schell

Robert S Elliott

John Pearson

A filter element assembly has at least two cylindrically shaped and concentrically arranged filter media sleeves each connected at one end thereof to an inlet plate and each connected at the other end to a closed end terminal plate. Openings are provided in the inlet plate to permit entry of liquid to be filtered into the annular space between the filter sleeves. The closed end terminal plate prevents flow of unfiltered liquid from the annular space between the sleeves so as to force the liquid through the porous media of the sleeves to effect filtration.

Collapsible filter element

A filter element assembly has at least two cylindrically shaped and concentrically arranged filter media sleeves each connected at one end thereof to an inlet plate and each connected at the other end to a closed end terminal plate. Openings are provided in the inlet plate to permit entry of liquid to be filtered into the annular space between the filter sleeves. The closed end terminal plate prevents flow of unfiltered liquid from the annular space between the sleeves so as to force the liquid through the porous media of the sleeves to effect filtration. The inlet plate includes a central area that is recessed in relation to its outer edge to define an inlet chamber capped by a planar housing lid. The inlet chamber communicates with the inlet conduit via an opening in the central area.

Liquid filter assembly with concentric filter sleeves of bag-type media

A method for filtering liquid includes directing the feed liquid into an annular space between concentrically arranged filter sleeves formed of flexible bag filter type filtration media. The liquid enters the annular space via openings formed in an inlet plate attached to the sleeves. The central area of the inlet plate is closed to prevent flow of unfiltered liquid into the cylindrical space defined by the innermost filter sleeve, whereby all liquid entering the filter assembly is filtered by the sleeves.

Liquid filtering in concentric filter sleeve assembly

A concentric arrangement of bag-type filter sleeves of a filter insert are removably supported within a concentric arrangement of screens of an annularly-shaped basket . The screens respectively support the filter sleeves against radial flow during filtration. A filter cartridge is carried interiorly of the innermost filter sleeve and is configured to filter the liquid that has first been filtered in the filter insert and before the liquid can exit the filter vessel

Concentrically-arranged flexible media and support basket with second stage cartridge filter

A filter insert includes a plurality of annularly-shaped, bag-type filter sleeves ( ) concentrically-arranged. The ends of the sleeves are attached to the flanges of an inlet plate an annular terminal plate or a circular terminal plate (e.g. by ultrasonic welding). The filter insert is removably placed within a basket such that concentrically-arranged screens ( ) of the basket support respective filter sleeves against radial flow during filtration.

Concentrically-arranged, multi-sleeve bag-type filter element assembly

A filter element assembly includes two cylindrically shaped and concentrically arranged flexible media sleeves ( ), wherein the sleeves are respectively supported against radial flow by an inner and outer cage ( ). Respective ends of the sleeves are permanently affixed to an inlet plate and a terminal plate The inlet plate includes a closed central area to prevent unfiltered liquid from entering the cylindrical space defined by the inner filter sleeve. The inlet plate also includes openings to allow unfiltered liquid into the annular space between the sleeves. An end cap is permanently affixed to the inlet plate and includes a support on an upper surface thereof for supporting the assembly within a housing.

Concentrically arranged filter element assembly

A filter bag assembly line first forms a tube from a filter media, the tube being cut to twice the length of a finished filter bag and being open on opposite ends. The tube is then vibration welded across its width, intermediate the ends, to form the bottoms of two filter bags in an end-to-end configuration. The adjoined filter bags are separated by a laser cutting machine and the separated bags then passed to an accumulation station. An operator removes a filter bag from the accumulation station and places the filter bag along with a corresponding bag ring into a welding station, which welds the filter bag and the ring together.

Filter bag assembly line and method

A filter element assembly (,) has at least two cylindrically-shaped and concentrically-arranged filter media sleeves (,), each connected at one end thereof to an inlet plate (,) and each connected at the other end to a terminal plate (,). Openings (,) are provided in the inlet plate to permit entry of liquid to be filtered into the annular space between the filter sleeves. The terminal plate is closed to prevent the flow of unfiltered liquid from the annular space between the sleeves and to force the liquid through the porous media of the sleeves to effect filtration. The ends of the filter sleeves are ultrasonically welded to flanges extending from the plates.

Collapsible filter element assembly

A sealing ring for use in connection with a filter bag assembly of a filter is disclosed. The sealing ring includes an annular body having an outer annular wall projecting from the body. The outer wall is flexible such that it can engage an adjacent surface of the filter in a liquid-tight manner for forming a seal between the surface and the sealing ring.

Filter bag and sealing ring therefor

A filter element assembly has at least two cylindrically shaped and concentrically arranged flexible filter media sleeves each connected at one end thereof to an inlet plate and each connected at the other end to a closed end plate. Openings are provided in the inlet plate to permit entry of liquid to be filtered into the annular space between the filter sleeves. The closed end plate prevents flow of unfiltered liquid from the annular space between the sleeves so as to force the liquid through the porous media of the sleeves to effect filtration. Each of the filter sleeves is supported by a rigid, cylindrically shaped mesh screen of an annularly shaped basket.

Filter element assembly

A prefilter bag for insertion into a standard filtration bag apparatus, having a filtration assembly comprising a seamless filter membrane having uniform pore openings preselected within the range of between about 2 and about 50 microns (.mu.) and a linearly channeled, non-deformable, semi-rigid liquid transport thermoplastic sheet in the form of a molded webbing or netting in contact with the upper surface of the filter membrane; said webbing having marginal edges which are coextensive with those of the membrane; said assembly adapted to be shaped by continuous winding of the assembly upon itself for 2 to 5 complete convolutions around a tubular mandrel so as to form a cylindrical tube or cone; the bottom of said cylinder being sealed to prevent liquid leakage and the top of said cylinder, forming a liquid inlet opening, being sealed to a retaining ring adapted to be inserted in, attached to or sealed to an outer, retaining ring of a non-wrapped filter bag. The inlet of the wrapped cylindrical bag is optionally fitted with vortex directing means to enhance a linearly tangential direction of the entering liquid against the walls of the inside membrane. The invention also pertains to a method for the fabrication and use of the present filtration bag.

Filter bag and process of manufacture

A filter apparatus having a filter bag subassembly for collecting contaminating material. The filter bag sub-assembly includes five diametrically and axially-spaced bags and an integral collar. The five spaced bags form five spaced chambers and the integral collar has a stepped shape forming five cylinder support portions for the five spaced bags.

Filter bag subassembly

A filter apparatus having a bag filter subassembly for collecting contaminating material. The bag filter subassembly includes a bag filter unit and an integral collar. The bag filter unit has an outer layer having mesh of selective strand size and selective pore size to give added strength to the bag.

Multiple layer filter bag including abrasion-resistant material

A filter apparatus having a bag filter subassembly for collecting contaminating material. The bag filter subassembly includes a bag filter having a top end portion and an integral collar. The collar has a lower portion fixedly connected to the bag filter, and has a middle portion to be supported within a vessel, and has a top lip portion to engage a cover plate of the vessel. The collar has a pivotal web portion disposed between the middle portion and the top lip portion, and has an inner surface with a groove having sidewalls, whereby internal pressure on the sidewalls pivot the top lip portion causing a sealing ring bearing area on the cover plate.

Filter bag seal

A filter apparatus having a bag filter subassembly for collecting contaminating material. The bag filter subassembly includes a bag filter having a top end portion and a gasket ring having a goove receiving the top end portion. The gasket ring has a pair of opposite, upright, axial handles each having a finger-grip, loop portion and a resilient stem portion. The upright handles, which are used for lifting the bag filter from an enclosure vessel deflect down to a radial position when a cover is positioned on the vessel and also spring up when the cover is removed.

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Mohegan Lake, NY, United States of America

Moshe Gershenson