Patents by Inventor Ulf SCHUEMANN
Ulf SCHUEMANN 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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Publication number: 20230360871Abstract: A compact vacuum interrupter has an insulator element, a moving contact connection, a fixed contact connection, a moving contact, and a fixed contact. The moving contact has a moving contact rod and a moving-contact contact element. The fixed contact has a fixed contact rod and a fixed-contact contact element. The moving contact is formed with a material that is mechanically stronger than a material of the fixed contact.Type: ApplicationFiled: September 13, 2021Publication date: November 9, 2023Inventors: Frank Graskowski, Ulf Schümann, Alexander Ziefle
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Patent number: 11355417Abstract: A fastening unit for connecting a heat-generating body to a heat sink is provided. The fastening unit includes a retaining pin and a retaining element wherein the retaining pin is connected to a retaining head. The retaining pin extends through the retaining element and the retaining head contacts the retaining element. The retaining element is engageable upon a body of the heat sink so as to retain same in a fastening direction of the retaining pin. The retaining element is engageable laterally on the body of the heat sink, the retaining element having, on a side thereof for facing the body of the heat sink, a retaining groove extending in a longitudinal direction perpendicular to the fastening direction. In an assembled state for the fastening unit, at least one groove surface of the retaining groove of the retaining element contacts the body of the heat sink.Type: GrantFiled: December 21, 2018Date of Patent: June 7, 2022Assignee: Fachhochschule KielInventors: Jasper Schnack, Ulf Schümann
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Patent number: 11276991Abstract: A control rod system has a control or drive rod and at least one compensation element for vacuum interrupters, in particular for gas-insulated switchgear. The at least one compensation element has at least one hermetically sealed bellows. The at least one hermetically sealed bellows is either connected to the drive rod at at least one point, or is connected to or can be coupled to the drive rod via at least one engagement device and the engagement device is connected or can be connected to the at least one compensation element in a fixed or engaging manner.Type: GrantFiled: November 28, 2018Date of Patent: March 15, 2022Assignee: Siemens AktiengesellschaftInventor: Ulf Schuemann
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Publication number: 20200365484Abstract: The invention relates to a fastening unit (10) for connecting thermally stressed components to each other, particularly a heat-generating body (44) having a heat sink (42), comprising a retaining pin (12) and a retaining element (16), wherein the retaining pin (12) is connected to a retaining head (14), the retaining pin (12) extends through the retaining element (16), the retaining head (14) contacts the retaining element (16), and the retaining element (16) engages on the body (44) or heat sink (42) and retains it in a fastening direction (26) of the retaining pin (12).Type: ApplicationFiled: December 21, 2018Publication date: November 19, 2020Applicant: Fachhochschule KielInventors: Jasper Schnack, Ulf Schümann
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Publication number: 20200328581Abstract: A control rod system has a control or drive rod and at least one compensation element for vacuum interrupters, in particular for gas-insulated switchgear. The at least one compensation element has at least one hermetically sealed bellows. The at least one hermetically sealed bellows is either connected to the drive rod at at least one point, or is connected to or can be coupled to the drive rod via at least one engagement device and the engagement device is connected or can be connected to the at least one compensation element in a fixed or engaging manner.Type: ApplicationFiled: November 28, 2018Publication date: October 15, 2020Inventor: ULF SCHUEMANN
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Patent number: 10580595Abstract: A method for operating an electrical switching device and an electrical switching device are disclosed. In order to ensure reliable operation of an electrical switching device having parallel switching paths allocated to a phase, which have lower switching capacity in comparison to conventional parallel switching paths, the zero current crossings in the phase are detected and at least one switching mechanism, operatively connected to the switching paths, is actuated so that all parallel switching paths allocated to the phase open within a window of time which is in the phase relative to the zero current crossings.Type: GrantFiled: July 16, 2015Date of Patent: March 3, 2020Assignee: SIEMENS AKTIENGESELLSCHAFTInventors: Karsten Freundt, Hartmut Kaletta, Andreas Malitz, Ulf Schuemann, Erik D. Taylor
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Patent number: 10418211Abstract: A switching contact, of a vacuum interrupter including support bodies, includes an additional support body which has the shape of a truncated cone or of a hollow truncated cone or of a partially hollow truncated cone. The additional support body is offset from a first location or region on the bottom of the contact carrier, located in the notional extension of the contact rod and inside the contact carrier, to a second location or region, located on the side of the contact plate facing the contact carrier and on the outer edge of the contact plate in relation to the first region.Type: GrantFiled: August 19, 2016Date of Patent: September 17, 2019Assignee: SIEMENS AKTIENGESELLSCHAFTInventors: Lydia Baron, Frank Graskowski, Uwe Jahnke, Andreas Lawall, Ulf Schuemann
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Publication number: 20190043681Abstract: A switching contact, of a vacuum interrupter including support bodies, includes an additional support body which has the shape of a truncated cone or of a hollow truncated cone or of a partially hollow truncated cone. The additional support body is offset from a first location or region on the bottom of the contact carrier, located in the notional extension of the contact rod and inside the contact carrier, to a second location or region, located on the side of the contact plate facing the contact carrier and on the outer edge of the contact plate in relation to the first region.Type: ApplicationFiled: August 19, 2016Publication date: February 7, 2019Applicant: Siemens AktiengesellschaftInventors: Lydia BARON, Frank GRASKOWSKI, Uwe JAHNKE, Andreas LAWALL, Ulf SCHUEMANN
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Publication number: 20170162344Abstract: A method for operating an electrical switching device and an electrical switching device are disclosed. In order to ensure reliable operation of an electrical switching device having parallel switching paths allocated to a phase, which have lower switching capacity in comparison to conventional parallel switching paths, the zero current crossings in the phase are detected and at least one switching mechanism, operatively connected to the switching paths, is actuated so that all parallel switching paths allocated to the phase open within a window of time which is in the phase relative to the zero current crossings.Type: ApplicationFiled: July 16, 2015Publication date: June 8, 2017Applicant: Siemens AktiengesellschaftInventors: Karsten FREUNDT, Hartmut KALETTA, Andreas MALITZ, Ulf SCHUEMANN, Erik D. TAYLOR
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Patent number: 9230760Abstract: A vacuum interrupter has a housing with at least a first metal flange through which a first connection pin extends into the vacuum interrupter in a vacuum-tight manner to a first contact. The housing has at least one insulating-material housing region formed by a disc-like insulator. A second connection pin extends into the vacuum interrupter in a vacuum-tight manner to a second contact. The vacuum interrupter can be produced in a cost-effective manner with a compact construction. There is also described a switch pole for a switching device having a vacuum interrupter.Type: GrantFiled: March 20, 2012Date of Patent: January 5, 2016Assignee: Siemens AktiengesellschaftInventors: Martin Böttcher, Frank Graskowski, Christoph Luft, Ulf Schümann, Gernot Swiatkowski, Jörg Teichmann
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Patent number: 9123490Abstract: A vacuum switch tube has a housing which has two insulating housing regions arranged and configured symmetrically in respect of a center plane. Each of the two insulating housings contains a plurality of insulating housing parts. Shielding elements extend into the interior of the vacuum switch tube and are arranged between neighboring insulating housing parts and between insulating housing parts and neighboring additional housing parts. The shielding elements have improved dielectric properties and a simultaneously material-saving structure. Accordingly, the geometrical dimensions of the shielding elements are determined in dependence on a connected voltage and possible critical field strength between neighboring shields.Type: GrantFiled: January 7, 2011Date of Patent: September 1, 2015Assignee: Siemens AktiengesellschaftInventors: Lydia Baron, Werner Hartmann, Astrid Renz, Ulf Schümann
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Patent number: 8847097Abstract: A vacuum interrupter includes a housing having two insulating material areas disposed and constructed symmetrically with respect to a center plane. Each of the two insulating material housing areas includes a plurality of insulating material housing parts. The interrupter has a compact construction and high dielectric strength. The insulating material housing part of each insulating material housing area located farthest away from the center plane has a length that is greater than the length of the other insulating material housing parts.Type: GrantFiled: June 18, 2010Date of Patent: September 30, 2014Assignee: Siemens AktiengesellschaftInventors: Ulf Schümann, Astrid Renz
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Publication number: 20140151339Abstract: A vacuum interrupter has a housing with at least a first metal flange through which a first connection pin extends into the vacuum interrupter in a vacuum-tight manner to a first contact. The housing has at least one insulating-material housing region formed by a disc-like insulator. A second connection pin extends into the vacuum interrupter in a vacuum-tight manner to a second contact. The vacuum interrupter can be produced in a cost-effective manner with a compact construction. There is also described a switch pole for a switching device having a vacuum interrupter.Type: ApplicationFiled: March 20, 2012Publication date: June 5, 2014Applicant: Siemens AktiengesellschaftInventors: Martin Böttcher, Frank Graskowski, Christoph Luft, Ulf Schümann, Gernot Swiatkowski, Jörg Teichmann
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Publication number: 20130092659Abstract: A vacuum switch tube has a housing which has two insulating housing regions arranged and configured symmetrically in respect of a center plane. Each of the two insulating housings contains a plurality of insulating housing parts. Shielding elements extend into the interior of the vacuum switch tube and are arranged between neighboring insulating housing parts and between insulating housing parts and neighboring additional housing parts. The shielding elements have improved dielectric properties and a simultaneously material-saving structure. Accordingly, the geometrical dimensions of the shielding elements are determined in dependence on a connected voltage and possible critical field strength between neighboring shields.Type: ApplicationFiled: January 7, 2011Publication date: April 18, 2013Applicant: SIEMENS AKTIENGESELLSCHAFTInventors: Lydia Baron, Werner Hartmann, Ulf Schümann, Astrid Renz
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Publication number: 20130062316Abstract: A vacuum interrupter includes a housing having two insulating material areas disposed and constructed symmetrically with respect to a center plane. Each of the two insulating material housing areas includes a plurality of insulating material housing parts. The interrupter has a compact construction and high dielectric strength. The insulating material housing part of each insulating material housing area located farthest away from the center plane has a length that is greater than the length of the other insulating material housing parts.Type: ApplicationFiled: June 18, 2010Publication date: March 14, 2013Applicant: SIEMENS AKTIENGESELLSCHAFTInventor: Ulf Schümann