Patents Assigned to Witzenmann GmbH
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Publication number: 20240388052Abstract: A temperature-controllable power line apparatus having: a tubular fluid line element made of an electrically conductive material, in particular metal, preferably copper or aluminum, including corresponding alloys; at least two openings of the fluid line element, which openings are preferably arranged at different ends of the fluid line element; and a free space inside the fluid line element, which free space provides a fluid-guiding connection between the two openings. A strand having a plurality of strand wires, preferably made of copper, is guided fluid line element; the free space extends at least in regions along the fluid line element around the strand; and the strand or the strand wires in at least one connection region is/are placed on the fluid line element, preferably pressed, or vice versa. A method for producing a temperature-controllable power line apparatus and a method for temperature-controlling a power line are further provided.Type: ApplicationFiled: May 9, 2024Publication date: November 21, 2024Applicant: Witzenmann GmbHInventor: David EHRENBERGER
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Publication number: 20230400045Abstract: A fluid distribution system (1) having a main distribution line (2) and a number of branch lines (7), which branch lines (7) branch off in each case from the main line (2). A throttle device (8) is arranged in at least one branch line (7), and the throttle device (8) is formed by at least a local deformation of the relevant branch line (7). A method for producing such a fluid distribution system (1) is likewise provided.Type: ApplicationFiled: June 9, 2023Publication date: December 14, 2023Applicant: Witzenmann GmbHInventor: David Ehrenberger
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Publication number: 20230402679Abstract: A fluid distribution system for a battery module arrangement including battery modules, each having first and second fluid connectors. The fluid distribution system includes: a first main line element from which there branches off at least one first branch line portion; a second main line element from which there branches off at least one second branch line portion; a first connection element detachably connected to the branch line portion of the first main line element; a second connection element detachably connected to the branch line portion of the second main line element; the first connection element has a first curvature to match a routing direction of the first branch line portion to a routing direction of the first fluid connector; and the second connection element has a second curvature to match a routing direction of the second branch line portion to a routing direction of the second fluid connector.Type: ApplicationFiled: May 12, 2023Publication date: December 14, 2023Applicant: Witzenmann GmbHInventor: Alexander Leippi
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Publication number: 20230375014Abstract: An apparatus (1) for damping pressure pulsations, includes: a working chamber (5) to which a working pressure (p1) is or can be applied; and a compensation chamber (6) which is separated from the working chamber (5) by an at least partially elastic separating diaphragm (4). The apparatus (1) is distinguished in that working chamber (5) and compensation chamber (6) are connected to one another in a fluid-conducting manner via at least one line device (7).Type: ApplicationFiled: May 19, 2023Publication date: November 23, 2023Applicant: Witzenmann GmbHInventor: René RÖSLER
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Publication number: 20230170549Abstract: A battery cell connection element (4) including a main body (44) formed as a fluid line element made of an electrically conductive material with a longitudinal axis (L). The main body (44) is preferably closed at both ends (4a, 4b), in particular in a fluid-tight manner, and has a peripherally, substantially closed casing wall, in which at least two through-openings (4da, 4ea), preferably punch-outs, are arranged on the same side of the main body (44), with these through-openings (4da, 4ea) being arranged adjacent to one another and offset in the direction of the longitudinal axis (L), in order to be able to connect the battery cell connection element (4) to cell arresters (3) of battery cells of a battery cell assembly via the through-openings (4da, 4ea).Type: ApplicationFiled: June 9, 2021Publication date: June 1, 2023Applicant: Witzenmann GmbHInventors: David EHRENBERGER, Alexander LEIPPI
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Publication number: 20230111428Abstract: A method for fluidically connecting functional modules that are temperature-controlled by a fluid, preferably battery modules, including a) providing the functional modules with at least one line port for directing the fluid in and/or out, at least two functional modules being arranged at a mutual spacing so the line ports are substantially exactly opposite each other and aligned along a first axis and open into a region between the modules, c) incorporating a preassembled connection assembly in the region, the connection assembly having fluid line(s) for feeding and/or discharging the fluid, and at least two fluidic connector pieces which branch off from the fluid line(s) such that the connector pieces are aligned with the line ports along the first axis, and d) modifying a spacing between the connector pieces and/or a length thereof along the first axis such that the connector pieces each fluidically contact one of the line ports.Type: ApplicationFiled: October 11, 2022Publication date: April 13, 2023Applicant: Witzenmann GmbHInventors: David EHRENBERGER, Maximilian RITTER, Jörg LUDWIG, Alexander LEIPPI
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Publication number: 20230113220Abstract: A cooling-line system (10) of modular construction, in particular for batteries of electric vehicles, having at least one tubular connecting element (11) composed of a first metal; and at least two tubular or hose-like line elements (15, 16) composed of a second metal, which line elements (15, 16) are or can be connected by the connecting element (11), or at least one such line element (15, 16) which can be connected by the connecting element (11) to a function module to be cooled, preferably a battery.Type: ApplicationFiled: October 11, 2022Publication date: April 13, 2023Applicant: Witzenmann GmbHInventors: Frank BESSLER, Ricardo Andre DIAS-ASSIS, Nicolas DROUART, Antoine JOGUET, Maximilian Ritter
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Patent number: 11359754Abstract: A flexible pipe element is provided formed as a metal bellows with at least one corrugated bellows section and a bellows brim, which forms one end of the metal bellows, and a connection element for connecting the metal bellows to a continuing pipe part or to a connector, with the connection element having a connection area for abutting a contact area of the bellows brim. An annular bulge is formed in the contact area of the bellows brim and/or in the connection area of the connection element projecting beyond an average level of the contact area and/or an average level of the connection area in order to form a linear seal between the contact area and the connection area. A method for producing such a flexible line part is also provided.Type: GrantFiled: February 16, 2016Date of Patent: June 14, 2022Assignee: Witzenmann GmbHInventors: Matthias Farr, Jochen Glas, Thomas Herr, Stefan Keller
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Patent number: 11015512Abstract: A line element for compensating for expansions and/or relative movements within a line through which fluid can flow, comprising a ring-corrugation or helical-corrugation bellows 1 and a hose 3, which is arranged coaxially in the interior of the bellows 1 and is made of a dimensionally stable material, for flow-guidance purposes. The hose 3 has a number of individual, essentially dimensionally stable ring-form hose elements 4 which are plugged axially one inside the other so as to be retained such that they can be moved axially and/or angularly in relation to one another between a compressed position and an extended position. A method for producing such a line element is also provided.Type: GrantFiled: February 21, 2018Date of Patent: May 25, 2021Assignee: Witzenmann GmbHInventors: Alexander Elsasser, Nadine Hanakam, Jorg Ludwig, Daniel Rotfuss, Thorsten Zohm
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Patent number: 10589331Abstract: A method and a device for separating a wound tube (1) which includes interlocking windings (11, 12, 13, 14) of a metal strip (2) are provided, the wound tube (1) is welded in a predetermined axial region (10) and is then severed within the region (10) in a radial plane (6). The method furthermore defines that the wound tube (1) is axially compressed in the predetermined region prior to welding, such that the windings (11, 12, 13, 14) bear against one another in the region (10), and the welding is carried out along a predetermined number of turns (11, 12) in the region (10).Type: GrantFiled: June 7, 2013Date of Patent: March 17, 2020Assignee: Witzenmann GmbHInventors: Torsten Kappenstein, Gerald Kolbe, Stefan Schnell
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Publication number: 20180238222Abstract: A line element for compensating for expansions and/or relative movements within a line through which fluid can flow, comprising a ring-corrugation or helical-corrugation bellows 1 and a hose 3, which is arranged coaxially in the interior of the bellows 1 and is made of a dimensionally stable material, for flow-guidance purposes. The hose 3 has a number of individual, essentially dimensionally stable ring-form hose elements 4 which are plugged axially one inside the other so as to be retained such that they can be moved axially and/or angularly in relation to one another between a compressed position and an extended position. A method for producing such a line element is also provided.Type: ApplicationFiled: February 21, 2018Publication date: August 23, 2018Applicant: Witzenmann GmbHInventors: Alexander Elsasser, Nadine Hanakam, Jorg Ludwig, Daniel Rotfuss, Thorsten Zohm
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Patent number: 10041620Abstract: Proposed is a line assembly (1), including: a metal hose (2) that is corrugated at least in some segments; and an inner component (3), which is arranged radially inside the metal hose at least over a partial length of the metal hose; the line assembly being distinguished by at least one coupling element (4, 4?), which coupling element is arranged between an outer border (2d) of the metal hose (2) and an outside surface (3a) of the inner component (3) and which coupling element is designed to damp the metal hose (2) by means of mechanical coupling to the inner component (3).Type: GrantFiled: May 22, 2015Date of Patent: August 7, 2018Assignee: Witzenmann GmbHInventors: Bert Balmer, Jorg Ludwig, Rene Rosler, Daniel Rothfuss, Bernd Seeger
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Patent number: 10016847Abstract: A method for cutting a wound hose (1), made from mutually engaging windings (11, 12, 13, 14) of a metallic tape (2), with the wound hose (1) being welded in a predetermined axial area (10) and then cut within the area (10) essentially in a plane (6) extending radially, with the wound hose (1) being axially compressed in the predetermined area prior to welding such that in the area (10) a mutual contacting of the windings (11, 12, 13, 14) occurs. The welding is performed along a predetermined number of windings (11-14) in the area (10), and the welding energy required for welding the windings is introduced via the area of the winding hose into it. Additionally, an accordingly produced wound hose (1) is provided and a device suitable for its production.Type: GrantFiled: June 2, 2014Date of Patent: July 10, 2018Assignee: Witzenmann GmbHInventor: Matthias Farr
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Patent number: 9789432Abstract: A flexible line segment for the exhaust system of an internal combustion engine, with an annularly corrugated or helically corrugated metallic bellows, for exhaust gas flow therethrough, and a line segment arranged upstream in reference to the metallic bellows, with a precipitation device provided in the line section, arranged upstream in reference to the metallic bellows or mounted thereat. The precipitation device is provided for urea derivatives or urea entrained in an edge layer of the exhaust gas flow from an oversaturated edge layer of the exhaust gas flow.Type: GrantFiled: July 31, 2013Date of Patent: October 17, 2017Assignees: Witzenmann GmbH, Eberspächer Exhaust Technology GmbH & Co. KGInventors: Jens Barthold, Frank Berson, Jorg Ludwig, Rene Rosler, Silvia Calvo, Heike Tobben
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Publication number: 20170146175Abstract: Proposed is a line assembly (1), including: a metal hose (2) that is corrugated at least in some segments; and an inner component (3), which is arranged radially inside the metal hose at least over a partial length of the metal hose; the line assembly being distinguished by at least one coupling element (4, 4?), which coupling element is arranged between an outer border (2d) of the metal hose (2) and an outside surface (3a) of the inner component (3) and which coupling element is designed to damp the metal hose (2) by means of mechanical coupling to the inner component (3).Type: ApplicationFiled: May 22, 2015Publication date: May 25, 2017Applicant: Witzenmann GmbHInventors: Bert Balmer, Jorg Ludwig, Rene Rosler, Daniel Rothfuss, Bernd Seeger
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Patent number: 9638359Abstract: A strip wound hose is provided including a metal band with an approximately S-shaped profile, which is wound in helical windings to form a hose. The profile of the metal band includes two wall sections extending essentially axially and being radially spaced part from each other, which are connected to each other by a web and are each provided at the edge with a bent rim. The profiles of two adjacent windings each are mutually engaged via their rims such that they are axially movable in reference to each other between a compressed position and an extended position. Both the web as well as the rims of the profile are aligned diagonally by an angle of at least 10 degrees in reference to the radial direction. A method for cutting to length and/or widening the strip wound hose is also provided.Type: GrantFiled: February 1, 2016Date of Patent: May 2, 2017Assignee: Witzenmann GmbHInventor: Daniel Rothfuss
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Patent number: 9638358Abstract: A duct element for the exhaust system of a motor vehicle with an internal combustion engine, including at least one flexible duct part, preferably a bellows. The flexible duct part is embodied at least partially from a first type of steel with a Mo-content ?4% or ?6% and with a N-content from 0.3% to 0.6% or from 0.18% to 0.25%, preferably embodied from steel of the type 1.4565 or the type 1.4547. Furthermore a decoupling element is provided for motor vehicles with an internal combustion engine and a respective use of steel embodied with a Mo-content ?4% or ?6% and a N-content from 0.3% to 0.6% or from 0.18% to 0.25%, preferably steel of the type 1.4565 or 1.4547.Type: GrantFiled: February 6, 2014Date of Patent: May 2, 2017Assignee: Witzenmann GmbHInventors: Hans-Jurgen Leidig, Bernd Seeger
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Publication number: 20160238174Abstract: A flexible pipe element is provided formed as a metal bellows with at least one corrugated bellows section and a bellows brim, which forms one end of the metal bellows, and a connection element for connecting the metal bellows to a continuing pipe part or to a connector, with the connection element having a connection area for abutting a contact area of the bellows brim. An annular bulge is formed in the contact area of the bellows brim and/or in the connection area of the connection element projecting beyond an average level of the contact area and/or an average level of the connection area in order to form a linear seal between the contact area and the connection area. A method for producing such a flexible line part is also provided.Type: ApplicationFiled: February 16, 2016Publication date: August 18, 2016Applicant: Witzenmann GmbHInventors: Matthias Farr, Jochen Glas, Thomas Herr, Stefan Keller
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Publication number: 20160230908Abstract: A strip wound hose is provided including a metal band with an approximately S-shaped profile, which is wound in helical windings to form a hose. The profile of the metal band includes two wall sections extending essentially axially and being radially spaced part from each other, which are connected to each other by a web and are each provided at the edge with a bent rim. The profiles of two adjacent windings each are mutually engaged via their rims such that they are axially movable in reference to each other between a compressed position and an extended position. Both the web as well as the rims of the profile are aligned diagonally by an angle of at least 10 degrees in reference to the radial direction. A method for cutting to length and/or widening the strip wound hose is also provided.Type: ApplicationFiled: February 1, 2016Publication date: August 11, 2016Applicant: Witzenmann GmbHInventor: Daniel Rothfuss
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Patent number: 9175793Abstract: An attachment connection is provided including a thin-walled hose line connected with a carbon-containing attachment part of a carbon-containing iron alloy with a carbon component C >0.5% and a weld connection is provided between the hose line and the attachment part.Type: GrantFiled: October 15, 2008Date of Patent: November 3, 2015Assignee: WITZENMANN GMBHInventors: Jorg Hornung, Gerald Kolbe, Michael Rumold, Massimo Messina