Patents Assigned to Wieland-Werke AG
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Patent number: 10974309Abstract: A heat exchanger tube with a tube axis, a tube wall and with ribs extending around on the tube outer side. The ribs have a rib foot, rib flanks and a rib tip, wherein the rib foot projects substantially radially from the tube wall. The rib flanks are provided with additional structural elements which are arranged laterally on the rib flank. First material projections, which extend substantially in the axial and radial direction, adjoin second material projections which extend substantially in the axial and circumferential direction of the tube, wherein the first and second material projections have a common boundary line. The axial extent of the first material projections along this boundary line is less than the axial extent of the second material projections.Type: GrantFiled: October 4, 2018Date of Patent: April 13, 2021Assignee: WIELAND-WERKE AGInventors: Achim Gotterbarm, Jean El Hajal, Andreas Beutler
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Patent number: 10948245Abstract: The invention relates to a heat exchanger tube (1) having a tube longitudinal axis (A), a tube wall (2), an outer tube face (21) and an inner tube face (22), wherein axially parallel or helically circumferential continuous fins (3) are formed on the outer tube face (21) and/or inner tube face (22) which fins continuously run from the tube wall, and continuously extending primary grooves (4) are formed between respectively adjacent fins (3). According to the invention, the fins (3) along the fin profile are subdivided into periodically repeating fin sections (31) which are divided into a multiplicity of projections (6) with a projection height (h), wherein the projections (6) are formed between primary grooves (4) by making cuts into the fins (3) at a cutting depth transversely with respect to the fin profile to form fin segments and by raising the fin segments in a main orientation along the fin profile.Type: GrantFiled: May 17, 2017Date of Patent: March 16, 2021Assignee: WIELAND-WERKE AGInventors: Achim Gotterbarm, Ronald Lutz, Jean El Hajal, Manfred Knab
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Patent number: 10951102Abstract: A squirrel-cage rotor having at least one laminated rotor core and a method of manufacturing the same are provided. Short-circuit rings in the squirrel-cage rotor are provided with at least two metal composite discs. A metal composite disc includes at least a first metal disc and a second metal disc connected to the first metal disc, where the second metal disc is made of a different material from the first metal disc. Adjacent metal composite discs are arranged such that the first metal discs face one another. The short-circuit rings are attached at an end face to the rotor core. Conductive rotor bars are attached to the first metal disc in the region of slots arranged in the outer periphery of the short-circuit rings.Type: GrantFiled: August 7, 2018Date of Patent: March 16, 2021Assignee: WIELAND-WERKE AGInventors: Gerhard Thumm, Volker Voggeser
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Patent number: 10819201Abstract: A squirrel cage rotor having a shaft, a rotor plate stack with rotor bars arranged in the interior thereof, and cage rings, wherein at least one part of a cage ring includes a disk stack, which is constituted as a layered structure of disks with cut-outs, through which the ends of the rotor bars project out of the rotor plate stack. Adjoining disks in the disk stack are mutually spaced, and form a gap. The clearance between two adjoining disks, resulting from the gap, is constituted by moldings which are arranged on the disks wherein, in the gap, at least in the region of the moldings, a joint connection is provided.Type: GrantFiled: October 8, 2018Date of Patent: October 27, 2020Assignee: WIELAND-WERKE AGInventors: Gerhard Thumm, Volker Voggeser, Michael Wolf, Christoph Kästle
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Patent number: 10808303Abstract: A copper-nickel-zinc having the following composition in weight percentages: 46.0 to 51.0% Cu, 8.0 to 11.0% Ni, 0.2 to 0.6% Mn, 0.05 to 0.5% Si, up to 0.8% of each of Fe and/or Co, the sum of the Fe content and double the Co content equaling at least 0.1 wt. %, residual Zn, and unavoidable impurities, wherein nickel-, iron-, and manganese-containing and/or nickel-, cobalt-, and manganese-containing mixed silicides are embedded into a microstructure consisting of ?- and ?-phases as spherical or ellipsoidal particles and uses of such a copper-nickel-zinc alloy.Type: GrantFiled: October 12, 2016Date of Patent: October 20, 2020Assignee: WIELAND-WERKE AGInventors: Susanne Hüttner, Timo Allmendinger
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Publication number: 20200248293Abstract: The invention relates to a high-strength copper-nickel-tin alloy with excellent castability, hot workability and cold workability, high resistance to abrasive wear, adhesive wear and fretting wear and improved resistance to corrosion and stress relaxation stability, consisting of (in weight %): 2.0-10.0% Ni, 2.0-10.0% Sn, 0.01-1.5% Si, 0.01-1.0% Fe, 0.002-0.45% B, 0.001-0.15% P, selectively up to a maximum of 2.0% Co, optionally also up to a maximum 2.0% Zn, selectively up to a maximum of—0.25% Pb, the residue being copper and unavoidable impurities, characterised in that—the ratio Si/B of the element contents in wt. % of the elements silicon and boron is a minimum 0.4 and a maximum 8; such that the copper-nickel-tin alloy has Si-containing and B-containing phases and phases of the systems Ni—Si—B, Ni—B, Fe—B, Ni—P, Fe—P, Ni—Si and other Fe-containing phases which significantly improve the processing properties and use properties of the alloy.Type: ApplicationFiled: June 27, 2017Publication date: August 6, 2020Applicant: Wieland-Werke AGInventor: Kai WEBER
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Publication number: 20200181738Abstract: The invention relates to a high-strength as-cast copper alloy containing tin, with excellent hot-workability and cold-workability properties, high resistance to abrasive wear, adhesive wear and fretting wear, and improved corrosion resistance and stress relaxation resistance, consisting (in wt. %) of: 4.0 to 23.0% Sn, 0.05 to 2.0% Si, 0.005 to 0.6 B, 0.001 to 0.08% P, optionally up to a maximum of 2.0% Zn, optionally up to a maximum of 0.6% Fe, optionally up to a maximum of 0.5% Mg, optionally up to a maximum of 0.25% Pb, with the remainder being copper and inevitable impurities, characterised in that the ratio of Si/B of the element content of the elements silicon and boron lies between 0.3 and 10. The invention also relates to a casting variant and a further-processed variant of the tin-containing copper alloy, a production method, and the use of the alloy.Type: ApplicationFiled: February 10, 2017Publication date: June 11, 2020Applicant: Wieland-Werke AGInventor: Kai WEBER
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Patent number: 10533605Abstract: A method for producing an internally structured slide bearing bushing involves the following steps: a) providing a slide bearing bushing with at least one bearing region which is formed as a hollow cylinder with an internal surface and which has an external diameter and an internal diameter, b) providing an external tool with a through-opening, c) providing an internal tool which has an integral cylindrical operating region with an external surface with a structure, d) inserting the internal tool into the bearing region of the slide bearing bushing, e) introducing the slide bearing bushing and the internal tool into the conical widened portion of the through-opening of the external tool, f) pressing the slide bearing bushing into the through-opening of the external tool, g) removing the slide bearing bushing from the through-opening of the external tool, and h) radially widening the slide bearing bushing.Type: GrantFiled: November 9, 2015Date of Patent: January 14, 2020Assignee: WIELAND-WERKE AGInventors: Gerhard Thumm, Volker Voggeser
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Patent number: 10480049Abstract: A copper alloy having the following composition (in % by weight): from 10.6 to 18% of Al, from 10.5 to 14.5% of Ni, optionally up to 2% of Fe, optionally up to 1% of Co, optionally up to 0.5% of Ti, optionally up to 0.5% of Mn, optionally up to 0.15% of B, optionally up to 0.1% of Ca, and optionally up to 0.1% of C, with the balance being copper and unavoidable impurities. Nickel aluminides of the NiAl type are embedded as precipitates in the microstructure of the alloy.Type: GrantFiled: March 31, 2017Date of Patent: November 19, 2019Assignee: WIELAND-WERKE AGInventors: Igor Altenberger, Hans-Achim Kuhn
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Patent number: 10415893Abstract: An exterior surface of a heat transfer tube has a plurality of channels formed into the surface, where the channels are substantially parallel to one another and extend at a first angle to a longitudinal axis to the tube. A plurality of cuts are then made into the surface substantially parallel to one another and extend at a second angle to a longitudinal axis to the tube different from the first angle. Individual fin segments extend from the surface and are separated from one another by the channels and the cuts. The fin segments have a first channel-adjacent edge adjacent substantially parallel to the channel, a first cut-adjacent edge substantially parallel to the cut, and a corner formed by a second channel-adjacent edge and a second cut-adjacent edge. The tube can be used as a condenser tube.Type: GrantFiled: January 31, 2018Date of Patent: September 17, 2019Assignee: WIELAND-WERKE AGInventor: Evraam Gorgy
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Publication number: 20190264312Abstract: The invention relates to a high-strength copper-nickel-tin alloy with excellent castability, hot workability and cold workability, high resistance to abrasive wear, adhesive wear and fretting wear and improved resistance to corrosion and stress relaxation stability, consisting of (in weight %): 2.0-10.0% Ni, 2.0-10.0% Sn, 0.01-1.5% Si, 0.01-1.0% Fe, 0.002-0.45% B, 0.001-0.15% P, selectively up to a maximum of 2.0% Co, optionally also up to a maximum 2.0% Zn, selectively up to a maximum of—0.25% Pb, the residue being copper and unavoidable impurities, characterised in that—the ratio Si/B of the element contents in wt. % of the elements silicon and boron is a minimum 0.4 and a maximum 8; such that the copper-nickel-tin alloy has Si-containing and B-containing phases and phases of the systems Ni—Si—B, Ni—B, Fe—B, Ni—P, Fe—P, Ni—Si and other Fe-containing phases which significantly improve the processing properties and use properties of the alloy.Type: ApplicationFiled: June 27, 2017Publication date: August 29, 2019Applicant: Wieland-Werke AGInventor: Kai WEBER
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Patent number: 10376953Abstract: A die-casting piston having a receiving unit attachable to a piston rod, which includes a cooling device and a connecting device for the piston rod. A hollow cylindrical carrier body of a cup-shaped design has a melt-side end face, on whose lateral surface at least one hollow cylindrical sliding body is mountable. An end ring is disposed between the end face of the carrier body and an end face of the sliding body, which is used as a front-end first holding element for the at least one hollow cylindrical sliding body. The carrier body is axially mountable on the receiving unit, extending over the cooling device, and may be locked to the receiving unit and released again with the aid of a connecting device, the connecting device being disposed axially downstream from the sliding body on the side facing away from the end face of the carrier body, and the connecting device being a bayonet joint.Type: GrantFiled: April 16, 2018Date of Patent: August 13, 2019Assignee: Wieland-Werke AGInventors: Gabriel Vida, Gerhard Kanzok
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Patent number: 10364482Abstract: A copper-zinc alloy having the following composition (in % by weight): from 67.0 to 69.0% of Cu, from 0.4 to 0.6% of Si, from 1.2 to 1.6% of Mn, from 0.03 to 0.06% of P, optionally up to a maximum of 0.5% of Al, optionally up to a maximum of 0.15% of Ni, optionally up to a maximum of 0.1% of Fe, optionally up to a maximum of 0.1% of Pb, optionally up to a maximum of 0.08% of Sn, optionally up to a maximum of 0.1% of S, balance Zn and unavoidable impurities. The alloy has a microstructure which consists of an ?-phase matrix in which inclusions of manganese silicides having a globular shape are present in a proportion of at least 2% by volume and not more than 5% by volume.Type: GrantFiled: March 4, 2016Date of Patent: July 30, 2019Assignee: WIELAND-WERKE AGInventors: Hans-Achim Kuhn, Gerhard Thumm, Maher Ababneh, Volker Voggeser, Jeremy Bell
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Publication number: 20190161833Abstract: The invention relates to a high-strength copper-nickel-tin alloy with excellent castability, hot workability and cold workability, high resistance to abrasive wear, adhesive wear and fretting wear and improved resistance to corrosion and stress relaxation stability, consisting of (in weight %): 2.0-10.0% Ni, 2.0-10.0% Sn, 0.01-1.0% Fe, 0.01-0.8% Mg, 0.01-1.5% Si, 0.002-0.45% B, 0.004-0.3% P, selectively up to a maximum of 2.0% Co, selectively up to a maximum of 0.25% Pb, the residue being copper and unavoidable impurities, characterised in that—the ratio Si/B of the element contents in wt. % of the elements silicon and boron is a minimum 0.4 and a maximum 8; such that the copper-nickel-tin alloy has Si-containing and B-containing phases and phases of the systems Ni—Si—B, Ni—B, Fe—B, Ni—P, Fe—P, Mg—P, Ni—Si, Mg—Si and other Fe-containing phases and Mg-containing phases which significantly improve the processing properties and use properties of the alloy.Type: ApplicationFiled: June 27, 2017Publication date: May 30, 2019Applicant: WIELAND-WERKE AGInventor: Kai WEBER
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Publication number: 20190062875Abstract: The invention relates to a high-strength as-cast copper alloy containing tin, with excellent hot-workability and cold-workability properties, high resistance to abrasive wear, adhesive wear and fretting wear, and improved corrosion resistance and stress relaxation resistance, consisting (in wt. %) of: 4.0 to 23.0% Sn, 0.05 to 2.0% Si, 0.005 to 0.6 B, 0.001 to 0.08% P, optionally up to a maximum of 2.0% Zn, optionally up to a maximum of 0.6% Fe, optionally up to a maximum of 0.5% Mg, optionally up to a maximum of 0.25% Pb, with the remainder being copper and inevitable impurities, characterised in that the ratio of Si/B of the element content of the elements silicon and boron lies between 0.3 and 10. The invention also relates to a casting variant and a further-processed variant of the tin-containing copper alloy, a production method, and the use of the alloy.Type: ApplicationFiled: February 10, 2017Publication date: February 28, 2019Applicant: Wieland-Werke AGInventor: Kai WEBER
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Publication number: 20180297110Abstract: A die-casting piston having a receiving unit attachable to a piston rod, which includes a cooling device and a connecting device for the piston rod. A hollow cylindrical carrier body of a cup-shaped design has a melt-side end face, on whose lateral surface at least one hollow cylindrical sliding body is mountable. An end ring is disposed between the end face of the carrier body and an end face of the sliding body, which is used as a front-end first holding element for the at least one hollow cylindrical sliding body. The carrier body is axially mountable on the receiving unit, extending over the cooling device, and may be locked to the receiving unit and released again with the aid of a connecting device, the connecting device being disposed axially downstream from the sliding body on the side facing away from the end face of the carrier body, and the connecting device being a bayonet joint.Type: ApplicationFiled: April 16, 2018Publication date: October 18, 2018Applicant: Wieland-Werke AGInventors: Gabriel VIDA, Gerhard KANZOK
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Patent number: 10094625Abstract: A heat exchanger tube with a tube axis, a tube wall and with ribs extending around on the tube outer side. The ribs have a rib foot, rib flanks and a rib tip, wherein the rib foot projects substantially radially from the tube wall. The rib flanks are provided with additional structural elements which are arranged laterally on the rib flank. First material projections, which extend substantially in the axial and radial direction, adjoin second material projections which extend substantially in the axial and circumferential direction of the tube, wherein the first and second material projections have a common boundary line. The axial extent of the first material projections along this boundary line is less than the axial extent of the second material projections.Type: GrantFiled: November 13, 2012Date of Patent: October 9, 2018Assignee: WIELAND-WERKE AGInventors: Achim Gotterbarm, Jean El Hajal, Andreas Beutler
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Patent number: 10082175Abstract: A sliding element which has a main body and a layer system which is applied thereto. The layer system has at least a first layer of the thickness s1, which is applied to the main body, and hard material particles having a mean extent d, which are introduced into the first layer and are therefore at least fixed on the main body. The thickness s1 of the first layer is such that it amounts to at least 60% and at most 90% of the mean extent d of the hard material particles, and the hard material particles form a surface structuring of the sliding element.Type: GrantFiled: April 9, 2015Date of Patent: September 25, 2018Assignee: WIELAND-WERKE AGInventors: Gerhard Thumm, Volker Voggeser, Juergen Meyer
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Patent number: 10024607Abstract: A heat exchanger tube with a tube axis, a tube wall, a tube outside and a tube inside. Continuously running, axially parallel or helically circling inner ribs are formed out of the tube wall on the tube inside, each inner rib having two rib flanks and a rib tip. A continuously extending groove is formed between adjacent inner ribs. The rib tip has at regular intervals recurring elevations which have an essentially frustopyramidal form. The inner ribs are raised in the radial direction on the contour line which is defined by the transitional edge of a rib flank to the rib tip and protuberances advancing out of the rib flank are formed in this region. Furthermore, the invention relates to a method for producing a heat exchanger tube.Type: GrantFiled: September 9, 2015Date of Patent: July 17, 2018Assignee: WIELAND-WERKE AGInventors: Achim Gotterbarm, Ronald Lutz, Andreas Beutler
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Patent number: 9973068Abstract: A copper alloy having the following composition (in % by weight): in each case 0.05 to 0.5% of at least three elements selected from the group consisting of Ag, Ni, Zn, Sn and Al, remainder Cu and unavoidable impurities, optionally 0.01 to 0.2% of one or more elements selected from the group consisting of Mg, Ti, Zr, B, P, As, Sb. Also, a current-carrying structural part made of a copper alloy and a cage rotor having multiple conductor bars and two short-circuiting rings, which are cast in one piece from a copper alloy.Type: GrantFiled: April 10, 2014Date of Patent: May 15, 2018Assignee: WIELAND-WERKE AGInventors: Timo Allmendinger, Tony Robert Noll, Joachim Riedle, Gerhard Thumm