Patents by Inventor Friedrich Kupfer
Friedrich Kupfer has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11959443Abstract: A filter element for a filter system for filtering a fluid has a filter bellows arranged about a longitudinal axis and enclosing an interior of the filter element. An end disk that is provided with an opening to the interior of the filter element is arranged at the filter bellows. The end disk has a bead that is arranged at the opening to the interior and partially surrounds the opening to the interior. The bead projects outwardly in a direction of the longitudinal axis. The filter system has a housing with a cover and a housing part closable by the cover. The filter element can be exchangeably arranged in the housing. The bead, in a mounted state of the filter element in the housing, engages a complementary receptacle arranged at an inner side of the cover.Type: GrantFiled: November 17, 2020Date of Patent: April 16, 2024Assignee: MANN+HUMMEL GmbHInventors: Pascal Neef, Torsten Fritzsching, Philipp Hettkamp, Arthur Sudermann, Friedrich Kupfer, Mario Rieger
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Publication number: 20220288525Abstract: A filter element for filtering a fluid has a zigzag-shaped folded filter medium with fold edges neighboring each other. A thread is attached by an adhesive material to the fold edges. The thread is a multiple-wound yarn. In a method for manufacturing the filter element, a thread in the form of a multiple-wound yarn is attached by an adhesive material to fold edges of a zigzag-shaped folded filter material. In the method, the thread is soaked and/or coated with the adhesive material that is in a plastic state. The thread soaked and/or coated with the adhesive material is attached to the fold edges by applying a pressure, and the adhesive material is hardened.Type: ApplicationFiled: March 30, 2022Publication date: September 15, 2022Inventor: Friedrich Kupfer
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Publication number: 20210121807Abstract: An air filter element for an air filter for an internal combustion engine is provided with a filter medium surrounding annularly a longitudinal axis of the air filter element. A first end disk is provided at a first end face of the air filter element, wherein the filter medium is embedded in the first end disk at the first end face. A clean air seal is configured to seal a raw side of the air filter against a clean side of the air filter. The clean air seal and the first end disk are embodied together as one piece. The clean air seal protrudes continuously radially past the filter medium. A filter housing for the air filter element is provided with a filter pot and a cover and has a clean air outlet and a raw air inlet arranged at a side wall of the filter pot.Type: ApplicationFiled: November 17, 2020Publication date: April 29, 2021Inventors: Pascal Neef, Torsten Fritzsching, Philipp Hettkamp, Arthur Sudermann, Friedrich Kupfer, Mario Rieger
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Publication number: 20210086119Abstract: A filter element for filtering a fluid has a filter bellows arranged about the longitudinal axis of the filter element and enclosing an interior of the filter element. A first end disk open toward the interior is arranged at a first end of the filter element. A second closed end disk is arranged at a second end of the filter element. The second end is oppositely positioned to the first end in a direction of the longitudinal axis. The filter bellows has folds with radially outer fold edges positioned on an outer circumferential surface of the filter bellows. The filter bellows is provided with a notch at least at one of the first and second ends. The notch has an axial length in the direction of the longitudinal axis. The axial length is shorter than a length extension of the filter bellows in the direction of the longitudinal axis.Type: ApplicationFiled: November 18, 2020Publication date: March 25, 2021Inventors: Pascal Neef, Friedrich Kupfer, Arthur Sudermann
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Publication number: 20210069630Abstract: A filter element for a filter system for filtering a fluid has a filter bellows arranged about a longitudinal axis and enclosing an interior of the filter element. An end disk that is provided with an opening to the interior of the filter element is arranged at the filter bellows. The end disk has a bead that is arranged at the opening to the interior and partially surrounds the opening to the interior. The bead projects outwardly in a direction of the longitudinal axis. The filter system has a housing with a cover and a housing part closable by the cover. The filter element can be exchangeably arranged in the housing. The bead, in a mounted state of the filter element in the housing, engages a complementary receptacle arranged at an inner side of the cover.Type: ApplicationFiled: November 17, 2020Publication date: March 11, 2021Inventors: Pascal Neef, Torsten Fritzsching, Philipp Hettkamp, Arthur Sudermann, Friedrich Kupfer, Mario Rieger
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Patent number: 9205358Abstract: A filter element has a filter body with a longitudinal axis, the filter body having a first end face and a second end face opposite the first end face. A first end plate is arranged at the first end face and has an open or closed configuration. A second end plate is arranged at the second end face. A support tube is arranged concentrically to the longitudinal axis and extends between the first and second end plates. The first end plate is reinforced by a reinforcement ring. The reinforcement ring has first openings that are visible from the exterior of the reinforcement ring, wherein the first openings enable a filling level check of a filling level of a material that connects the first end plate with the first end face.Type: GrantFiled: February 12, 2014Date of Patent: December 8, 2015Assignee: MANN+HUMMEL GMBHInventors: Michael Kaufmann, Klaus-Dieter Ruhland, Friedrich Kupfer, Joachim-Paul Krieger, Anita Moosmueller
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Patent number: 9101864Abstract: A filter device includes a lid (6) configured for detachable mounting to a filter housing, an annular filter element (2) mounted to the lid (6), a closure part (13) embodied as a separate component from the filter element and the lid (6) with the closure part (13) detachably secured to at least one of the lid (6) and the filter element (2).Type: GrantFiled: August 28, 2013Date of Patent: August 11, 2015Assignee: MANN+HUMMEL GMBHInventors: Pascal Neef, Robert Kusebauch, Friedrich Kupfer, Johannes Lampert
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Publication number: 20140223869Abstract: A filter body has a longitudinal axis and a first end face and a second end face opposite the first end face in a direction of the longitudinal axis. The filter body has a zigzag-folded filter medium arranged about the longitudinal axis, wherein the filter body has an inner circumference and an outer circumference and fold edges of the filter medium are positioned on the inner circumference and/or the outer circumference. The filter body further has a securing coil of at least one circumferentially extending thread applied onto the outer circumference. The fold edges have, at least over sections thereof, several embossments arranged such that the fold edges that are next to each other are secured relative to each other by the embossments.Type: ApplicationFiled: February 12, 2014Publication date: August 14, 2014Applicant: MANN+HUMMEL GMBHInventors: Michael Kaufmann, Klaus-Dieter Ruhland, Friedrich Kupfer, Thomas Vilsmaier, Joachim-Paul Krieger
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Publication number: 20140224129Abstract: A filter element has a filter body with a longitudinal axis, the filter body having a first end face and a second end face opposite the first end face. A first end plate is arranged at the first end face and has an open or closed configuration. A second end plate is arranged at the second end face. A support tube is arranged concentrically to the longitudinal axis and extends between the first and second end plates. The first end plate is reinforced by a reinforcement ring. The reinforcement ring has first openings that are visible from the exterior of the reinforcement ring, wherein the first openings enable a filling level check of a filling level of a material that connects the first end plate with the first end face.Type: ApplicationFiled: February 12, 2014Publication date: August 14, 2014Applicant: MANN+HUMMEL GMBHInventors: Michael Kaufmann, Klaus-Dieter Ruhland, Friedrich Kupfer, Joachim-Paul Krieger, Anita Moosmueller
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Publication number: 20130340399Abstract: A filter device includes a lid (6) configured for detachable mounting to a filter housing, an annular filter element (2) mounted to the lid (6), a closure part (13) embodied as a separate component from the filter element and the lid (6) with the closure part (13) detachably secured to at least one of the lid (6) and the filter element (2).Type: ApplicationFiled: August 28, 2013Publication date: December 26, 2013Applicant: MANN+HUMMEL GMBHInventors: Pascal Neef, Robert Kusebauch, Friedrich Kupfer, Johannes Lampert
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Patent number: 8287612Abstract: A filter element has of a filter medium (10) folded in a zig-zag manner and designed in a tubular shape. End plates (11, 12) are arranged on the filter medium end faces. End plate (12) has a concentric opening as well as a first annular ring (14) and a second annular ring (15), and a sealing groove (16) arranged between the rings. A reinforcement plate (17) is arranged at the end plate and has an annular surface (23) extending in axial direction across folds of the filter element.Type: GrantFiled: March 25, 2012Date of Patent: October 16, 2012Assignee: Mann + Hummel GmbHInventors: Eric Gillenberg, Friedrich Kupfer, Klaus-Dieter Ruhland, Oliver Steins
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Publication number: 20120210683Abstract: A filter element has of a filter medium (10) folded in a zig-zag manner and designed in a tubular shape. End plates (11, 12) are arranged on the filter medium end faces. End plate (12) has a concentric opening as well as a first annular ring (14) and a second annular ring (15), and a sealing groove (16) arranged between the rings. A reinforcement plate (17) is arranged at the end plate and has an annular surface (23) extending in axial direction across folds of the filter element.Type: ApplicationFiled: March 25, 2012Publication date: August 23, 2012Applicant: MANN+HUMMEL GMBHInventors: Eric Gillenberg, Friedrich Kupfer, Klaus-Dieter Ruhland, Oliver Steins
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Patent number: 8142533Abstract: The invention relates to a filter element consisting of a filter medium (10) which is folded in a zig-zag manner and designed in a concentric shape. End plates (11, 12) are arranged on the end sides of the medium. End plate (12) has a concentric opening as well as a first annular ring (14) and a second annular ring (15), and a sealing groove (16) arranged between the rings. A reinforcement plate (17) is arranged in the area between the filter medium and the rings (14, 15). The end surfaces (18, 19) of the rings (14, 15) are supported by the grooves (20, 21) of a filter element housing, the grooves running radially.Type: GrantFiled: October 2, 2008Date of Patent: March 27, 2012Assignee: Mann + Hummel GmbHInventors: Eric Gillenberg, Friedrich Kupfer, Klaus-Dieter Ruhland, Oliver Steins
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Publication number: 20100263339Abstract: The invention relates to a filter element consisting of a filter medium (10) which is folded in a zig-zag manner and designed in a concentric shape. End plates (11, 12) are arranged on the end sides of the medium. End plate (12) has a concentric opening as well as a first annular ring (14) and a second annular ring (15), and a sealing groove (16) arranged between the rings. A reinforcement plate (17) is arranged in the area between the filter medium and the rings (14, 15). The end surfaces (18, 19) of the rings (14, 15) are supported by the grooves (20, 21) of a filter element housing, the grooves running radially.Type: ApplicationFiled: October 2, 2008Publication date: October 21, 2010Applicant: MANN+HUMMEL GMBHInventors: Oliver Steins, Eric Gillenberg, Klaus Dieter Ruhland, Friedrich Kupfer