Patents Assigned to Herding GmbH Filtertechnik
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Publication number: 20240100465Abstract: A filter device including at least one filter element adapted to filter a raw fluid and having a raw fluid side and a clean fluid side, the filter element having a clean fluid outlet arranged on the clean fluid side and extending in a first plane, at least one clean fluid collecting channel into which the clean fluid outlet opens; at least one compressed-air cleaning-off device adapted to generate a pressure pulse for cleaning-off foreign matter adhering to the filter element and to conduct the same through the clean fluid outlet to the filter element, wherein the compressed-air cleaning-off device is adapted to conduct the pressure pulse at least approximately along the first plane to the clean fluid outlet, wherein the compressed-air cleaning-off device comprises a compressed-air supply channel operationally coupled to a clean fluid collecting channel outlet and adapted to charge the clean fluid collecting channel with pressure pulses.Type: ApplicationFiled: October 13, 2020Publication date: March 28, 2024Applicant: Herding GmbH FiltertechnikInventors: Walter Herding, Urs Herding, Egid Koller, Dino Bethke, Stefan Hajek, Christoph Weih
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Publication number: 20240100460Abstract: A filter element including a throughflow-porous filter body extending between a head end and a longitudinally opposite foot end, wherein a head structure is formed at the head end of the filter element, the head structure having at least one seal configured to seal the filter element with respect to a filter element holder, wherein the head structure has a sidewall extending basically in the longitudinal direction and the seal is formed on the basically longitudinally extending sidewall of the head structure of the filter element.Type: ApplicationFiled: October 13, 2020Publication date: March 28, 2024Applicant: Herding GmbH FiltertechnikInventors: Walter Herding, Urs Herding, Egid Koller, Alexander Stauber
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Patent number: 11529576Abstract: The invention relates to a filter element having inherent stability and being porous to permit flow therethrough, comprising a filter body which forms a porous sintered structure and is constructed with filter body particles which are at least in part polysulfide particles. In addition, the invention relates to a method of manufacturing such a filter element.Type: GrantFiled: March 14, 2017Date of Patent: December 20, 2022Assignee: HERDING GMBH FILTERTECHNIKInventors: Walter Herding, Urs Herding, Martina Marx, Stefan Hajek
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Publication number: 20200298154Abstract: The invention relates to a filter element having inherent stability and being porous to permit flow therethrough, comprising a filter body which forms a porous sintered structure and is constructed with filter body particles which are at least in part polysulfide particles. In addition, the invention relates to a method of manufacturing such a filter element.Type: ApplicationFiled: March 14, 2017Publication date: September 24, 2020Applicant: Herding GmbH FiltertechnikInventors: Walter Herding, Urs Herding, Martina Marx, Stefan Hajek
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Patent number: 9517427Abstract: A filter device is proposed for cleaning gas entraining foreign bodies, including at least one filter unit having at least one filter surface on a raw gas side to which a raw gas stream containing foreign bodies can be supplied, wherein filtration aids can be supplied to the raw gas stream and/or the filter surface, and wherein filtration aids and/or foreign matter attached to the filter surface can be cleaned off. The filter device additionally includes a fluidized bed arrangement in which a carrier fluid stream can be generated such that cleaned-off filtration aids and/or foreign matter can be held at least in part as filtration aerosol in a surrounding of the filter unit and/or can re-attach to a filter surface.Type: GrantFiled: September 5, 2011Date of Patent: December 13, 2016Assignee: Herding GMBH FiltertechnikInventors: Urs Herding, Stefan Hajek
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Publication number: 20130259758Abstract: A filter device (19) is proposed for cleaning gas entraining foreign bodies, comprising: at least one filter unit (12) having at least one filter surface on a raw gas side to which a raw gas stream (44) containing foreign bodies can be supplied, wherein filtration aids can be supplied to the raw gas stream (44) and/or the filter surface, and wherein filtration aids and/or foreign matter attached to the filter surface can be cleaned off. The filter device (10) additionally comprises a fluidized bed arrangement (55) in which a carrier fluid stream (54) can be generated such that cleaned-off filtration aids and/or foreign matter can be held at least in part as filtration aerosol in a surrounding of the filter unit (12) and/or can re-attach to a filter surface.Type: ApplicationFiled: September 5, 2011Publication date: October 3, 2013Applicant: HERDING GMBH FILTERTECHNIKInventors: Urs Herding, Stefan Hajek
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Patent number: 8052878Abstract: A method for filtering out foreign particles from a cooling lubricant used in a process of machining a workpiece includes providing an inherently stable, flow-porous filter element. The filter element comprises a porous main body made of joined plastics particles and having an afflux surface and a porous coating on the afflux surface for surface filtration. The porous coating first component particles and/or fibres, second component anti-adhesion particles to mitigate the adhesion of filtered out material to the porous coating and to facilitate cleaning of the filter element, with the first component particles and/or fibres and the second component particles being mixed in the porous coating, a solidified inorganic binder, and a set adhesive. The solidified inorganic binder and the set adhesive bind the first component particles and/or fibres and the second component particles to each other and to the porous main body.Type: GrantFiled: March 17, 2009Date of Patent: November 8, 2011Assignee: Herding GmbH FiltertechnikInventors: Stefan Hajek, Urs Herding, Kurt Palz, Wolfgang Raabe, Reiner Thuerauf, Bernd Meindl
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Publication number: 20090200247Abstract: A method for filtering out foreign particles from a cooling lubricant used in a process of machining a workpiece includes providing an inherently stable, flow-porous filter element. The filter element comprises a porous main body made of joined plastics particles and having an afflux surface and a porous coating on the afflux surface for surface filtration. The porous coating first component particles and/or fibres, second component anti-adhesion particles to mitigate the adhesion of filtered out material to the porous coating and to facilitate cleaning of the filter element, with the first component particles and/or fibres and the second component particles being mixed in the porous coating, a solidified inorganic binder, and a set adhesive. The solidified inorganic binder and the set adhesive bind the first component particles and/or fibres and the second component particles to each other and to the porous main body.Type: ApplicationFiled: March 17, 2009Publication date: August 13, 2009Applicant: Herding GmbH FiltertechnikInventors: STEFAN HAJEK, Urs Herding, Kurt Palz, Wolfgang Raabe, Reiner Thurauf, Bernd Meindl
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Publication number: 20060207932Abstract: An inherently stable, flow-porous filter element (2) having a porous coating (10) for surface filtration on its afflux surface, said coating (10) comprising: (a) a main component of particles (12) and/or fibers (22); (b) an inorganic binder component (14; 24) binding the particles (12) and/or the fibers (22) of the main component to each other; (c) an adhesive (16; 26) binding the porous coating (10) to the remainder of the filter element; (d) and an anti-adhesion component (18; 28) mitigating the adhesion of filtered out material to the porous coating and facilitating cleaning of the filter element.Type: ApplicationFiled: July 15, 2005Publication date: September 21, 2006Applicant: Herding GmbH FiltertechnikInventors: Stefan Hajek, Urs Herding, Kurt Palz, Wolfgang Raabe, Reiner Thurauf, Bernd Meindl
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Patent number: 6709589Abstract: A dimensionally stable, flow-porous fluid treatment element suitable for hot fluid treatment, in particular a filter element, characterized by the following components: (a) inorganic solid particles with inner voids; and (b) hardened binder on a water glass base, (c) the binder holding together the solid particles to form the flow-porous fluid treatment element.Type: GrantFiled: November 30, 2000Date of Patent: March 23, 2004Assignee: Herding GmbH FiltertechnikInventors: Walter Herding, Hans-Joachim Burger
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Patent number: 6331197Abstract: A filter element of sintered-together plastics particles having substantially the shape of a narrow, hollow box with two large, zigzag or corrugated first side walls, two narrow second side walls interconnecting the first side walls, a closed bottom side and an opposite open side, with the peaks and valleys of the first side walls extending in the bottom side to the open side and the filter element, at the open side, having a head for attachment which is elongated and constitutes at least one flow passage, characterized in that the filter element comprises two unified halves each containing one of the first side walls that a foot of synthetic resin is cast on the bottom side, and that the head consists of synthetic resin and is cast on the first and second side walls such that it surrounds with a first part of its heights the first and second side walls on the outside and the projects with a second part of its heights beyond the first and second side walls so as to cover the same at the ends thereof, and in tType: GrantFiled: October 8, 1999Date of Patent: December 18, 2001Assignee: Herding GmbH FiltertechnikInventors: Walter Herding, Wolfgang Raabe
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Patent number: 6183530Abstract: A filter unit for exchangeable insertion in a housing of a filter system having a supporting component for supporting a filter unit in the housing; a multiplicity of individual, hollow filter elements wherein each filter element has an outer afflux surface for fluid to be filtered and an open surface portion for the outflow of filtered fluid from an interior of the filter element; and a casting resin. The hollow filter elements are united with the supporting component in such a manner that the filter elements are located substantially in their entirety on the second side of the supporting component. The filter elements are inherently stable filter elements composed with porously sintered together particles. The unification of the filter elements and the supporting component is effected by the casting resin covering the filter elements with a height of at least 1 cm.Type: GrantFiled: October 30, 1998Date of Patent: February 6, 2001Assignee: Herding GmbH FiltertechnikInventors: Urs Herding, Hans-Joachim Adlhoch
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Patent number: 5874000Abstract: A filter element comprising an inherently stable, porous supporting body with a finer-pored fibrous coating. According to a first aspect, the fibrous coating has first fibers which are longer than the pore size of the supporting body, and clearly shorter second fibers. According to a second aspect, less than 30% fine-grained particles are distributed in the fibrous coating. To produce the filter element the fibers are applied in the dry state by means of an air stream, an adhesive being applied before and/or after this operation. Alternatively the fibers are applied distributed in a liquid, whereby the adhesive can optionally be contained in the liquid. According to a further aspect, a coating layer consisting of fine-grained particles is applied to the fibrous coating.Type: GrantFiled: February 19, 1997Date of Patent: February 23, 1999Assignee: Herding GmbH FiltertechnikInventor: Walter Herding