Patents by Inventor Martin Krehnke
Martin Krehnke 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: 20230368989Abstract: A high-voltage device has an encapsulation housing and at least one bushing for at least one conductor, through which a current flows, into the encapsulation housing and/or out of the encapsulation housing. At least one electrode at free potential is surrounded by the bushing. The at least one electrode at free potential increases the dielectric strength in the high-voltage device, especially in the region of the bushing.Type: ApplicationFiled: September 13, 2021Publication date: November 16, 2023Inventors: Thomas Heinz, Dietmar Frank, Armin Grund, Alexander Hartung, Martin Krehnke, Volker Lehmann
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Patent number: 11424087Abstract: An electrical switching device includes a kinematic chain, a first encapsulation housing, a movable switching contact piece and a fixed switching contact piece. The movable switching contact piece is movable by the kinematic chain which penetrates the first encapsulation housing in a fluid-tight manner. The kinematic chain penetrates the first encapsulation housing in a linearly movable manner.Type: GrantFiled: December 27, 2018Date of Patent: August 23, 2022Assignee: Siemens Energy Global GmbH & Co. KGInventors: Michael Bartz, Alexander Hartung, Martin Krehnke
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Patent number: 10991527Abstract: A contact piece for a high-voltage circuit breaker includes at least a contact pin and a contact carrier. The contact carrier is configured to mechanically fasten the contact pin in the high-voltage circuit breaker. The contact pin includes a contact shaft. The contact carrier and the contact shaft are formed as a monolithic contact element. A method for producing a contact piece is also provided.Type: GrantFiled: September 5, 2017Date of Patent: April 27, 2021Assignee: Siemens AktiengesellschaftInventors: Sebastian Huebner, Martin Krehnke, Volker Lehmann
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Publication number: 20210043395Abstract: An electrical switching device includes a kinematic chain, a first encapsulation housing, a movable switching contact piece and a fixed switching contact piece. The movable switching contact piece is movable by the kinematic chain which penetrates the first encapsulation housing in a fluid-tight manner. The kinematic chain penetrates the first encapsulation housing in a linearly movable manner.Type: ApplicationFiled: December 27, 2018Publication date: February 11, 2021Inventors: MICHAEL BARTZ, ALEXANDER HARTUNG, MARTIN KREHNKE
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Patent number: 10600585Abstract: A gear unit housing for a gear unit includes a two-sided control lever for moving two switching contacts of a circuit breaker in opposite directions. The gear unit housing includes a housing cassette having a housing base and a cover plate detachably connected to the housing cassette by screw connections and lying opposite to the housing base. A bearing shaft for mounting the control lever for rotation about the bearing shaft is connected to the housing cassette and to the cover plate and extends between the housing base and the cover plate. At least one stud element form-lockingly connects the housing cassette and the cover plate. A gear unit having the gear unit housing is also provided.Type: GrantFiled: July 6, 2017Date of Patent: March 24, 2020Assignee: Siemens AktiengesellschaftInventors: Sebastian Huebner, Martin Krehnke, Andrzej Nowakowski
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Publication number: 20190244776Abstract: A contact piece for a high-voltage circuit breaker includes at least a contact pin and a contact carrier. The contact carrier is configured to mechanically fasten the contact pin in the high-voltage circuit breaker. The contact pin includes a contact shaft. The contact carrier and the contact shaft are formed as a monolithic contact element. A method for producing a contact piece is also provided.Type: ApplicationFiled: September 5, 2017Publication date: August 8, 2019Inventors: SEBASTIAN HUEBNER, MARTIN KREHNKE, VOLKER LEHMANN
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Publication number: 20190180952Abstract: A gear unit housing for a gear unit includes a two-sided control lever for moving two switching contacts of a circuit breaker in opposite directions. The gear unit housing includes a housing cassette having a housing base and a cover plate detachably connected to the housing cassette by screw connections and lying opposite to the housing base. A bearing shaft for mounting the control lever for rotation about the bearing shaft is connected to the housing cassette and to the cover plate and extends between the housing base and the cover plate. At least one stud element form-lockingly connects the housing cassette and the cover plate. A gear unit having the gear unit housing is also provided.Type: ApplicationFiled: July 6, 2017Publication date: June 13, 2019Inventors: SEBASTIAN HUEBNER, MARTIN KREHNKE, ANDRZEJ NOWAKOWSKI
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Patent number: 9748059Abstract: A switching device arrangement has a first contact set and a second contact set. The first contact set includes a first electric arc contact element and a first nominal current contact element. The first nominal current contact element can be moved relative to the first electric arc contact element. A first transmission is introduced in a kinematic chain in order to generate a relative movement of the first nominal current contact element and the first electric arc contact element. The first transmission is operationally connected between a stationary counter bearing and the first electric arc contact piece.Type: GrantFiled: January 7, 2014Date of Patent: August 29, 2017Assignee: Siemens AktiengesellschaftInventors: Radu-Marian Cernat, Martin Krehnke, Volker Lehmann, Friedrich Loebner, Andrzej Nowakowski
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Patent number: 9741514Abstract: A switching arrangement has a first contact set and a second contact set which can be moved with respect to the first contact set, and an insulating nozzle arrangement. The insulating nozzle arrangement is supported on the first contact set which includes a first arcing contact piece. The first arcing contact piece can be moved with respect to the insulating nozzle arrangement.Type: GrantFiled: January 7, 2014Date of Patent: August 22, 2017Assignee: Siemens AktiengesellschaftInventors: Radu-Marian Cernat, Martin Krehnke, Volker Lehmann, Friedrich Loebner, Andrzej Nowakowski
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Patent number: 9633806Abstract: A switching configuration includes a first switching contact set having a rated current contact piece and an arcing contact piece. The arcing contact piece and the rated current contact piece of the first switching contact set are movable relative to one another through a transmission mechanism. The arcing contact piece is supported by a support element on a contact carrier of the rated current contact piece. The transmission mechanism has a transmission mechanism chassis which is supported, particularly directly, on the contact carrier.Type: GrantFiled: June 19, 2013Date of Patent: April 25, 2017Assignee: SIEMENS AKTIENGESELLSCHAFTInventors: Martin Krehnke, Friedrich Loebner
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Patent number: 9484161Abstract: An electric switching device includes first and second switch contact pieces. The first switch contact piece has a guide portion. The first switch contact piece is connected to an actuating unit or drive device by a kinematic chain. The guide portion of the first switch contact piece is guided on a guide path. The guide portion and the guide path each have a contact or bearing surface and at least one of the contact or bearing surfaces is convexly curved.Type: GrantFiled: December 18, 2012Date of Patent: November 1, 2016Assignee: SIEMENS AKTIENGESELLSCHAFTInventors: Joachim Gericke, Robert Gruenler, Martin Krehnke, Volker Lehmann, Friedrich Loebner
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Patent number: 9460873Abstract: A switching device has a first contact side with a first nominal current contact piece and a first electric arc contact piece, and a second contact side with a second electric arc contact piece and a second nominal current contact piece. In order to generate a relative movement between the first and second contact sides, the first electric arc contact piece and the first nominal current contact piece as well as the second electric arc contact piece and the second nominal current contact piece are driven. For switching, the first contact piece is moved by a movement profile and the first nominal current contact piece is moved by a movement profile that differs from the movement profile of the first electric arc contact piece. A movement profile of the second electric arc contact piece and the second nominal current contact piece deviate from each other.Type: GrantFiled: January 7, 2014Date of Patent: October 4, 2016Assignee: Siemens AktiengesellschaftInventors: Radu-Marian Cernat, Martin Krehnke, Volker Lehmann, Friedrich Loebner, Andrzej Nowakowski
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Publication number: 20150371797Abstract: A switching arrangement has a first contact set and a second contact set which can be moved with respect to the first contact set, and an insulating nozzle arrangement. The insulating nozzle arrangement is supported on the first contact set which includes a first arcing contact piece. The first arcing contact piece can be moved with respect to the insulating nozzle arrangement.Type: ApplicationFiled: January 7, 2014Publication date: December 24, 2015Inventors: RADU-MARIAN CERNAT, MARTIN KREHNKE, VOLKER LEHMANN, FRIEDRICH LOEBNER, ANDRZEJ NOWAKOWSKI
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Publication number: 20150371796Abstract: A switching device arrangement has a first contact set and a second contact set. The first contact set includes a first electric arc contact element and a first nominal current contact element. The first nominal current contact element can be moved relative to the first electric arc contact element. A first transmission is introduced in a kinematic chain in order to generate a relative movement of the first nominal current contact element and the first electric arc contact element. The first transmission is operationally connected between a stationary counter bearing and the first electric arc contact piece.Type: ApplicationFiled: January 7, 2014Publication date: December 24, 2015Inventors: RADU-MARIAN CERNAT, MARTIN KREHNKE, VOLKER LEHMANN, FRIEDRICH LOEBNER, ANDRZEJ NOWAKOWSKI
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Publication number: 20150364280Abstract: A switching device has a first contact side with a first nominal current contact piece and a first electric arc contact piece, and a second contact side with a second electric arc contact piece and a second nominal current contact piece. In order to generate a relative movement between the first and second contact sides, the first electric arc contact piece and the first nominal current contact piece as well as the second electric arc contact piece and the second nominal current contact piece are driven. For switching, the first contact piece is moved by a movement profile and the first nominal current contact piece is moved by a movement profile that differs from the movement profile of the first electric arc contact piece. A movement profile of the second electric arc contact piece and the second nominal current contact piece deviate from each other.Type: ApplicationFiled: January 7, 2014Publication date: December 17, 2015Applicant: Siemens AktiengesellschaftInventors: RADU-MARIAN CERNAT, MARTIN KREHNKE, VOLKER LEHMANN, FRIEDRICH LOEBNER, ANDRZEJ NOWAKOWSKI
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Publication number: 20150162149Abstract: A switching configuration includes a first switching contact set having a rated current contact piece and an arcing contact piece. The arcing contact piece and the rated current contact piece of the first switching contact set are movable relative to one another through a transmission mechanism. The arcing contact piece is supported by a support element on a contact carrier of the rated current contact piece. The transmission mechanism has a transmission mechanism chassis which is supported, particularly directly, on the contact carrier.Type: ApplicationFiled: June 19, 2013Publication date: June 11, 2015Applicant: SIEMENS AKTIENGESELLSCHAFTInventors: Martin Krehnke, Friedrich Loebner
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Publication number: 20150014131Abstract: An electric switching device includes first and second switch contact pieces. The first switch contact piece has a guide portion. The first switch contact piece is connected to an actuating unit or drive device by a kinematic chain. The guide portion of the first switch contact piece is guided on a guide path. The guide portion and the guide path each have a contact or bearing surface and at least one of the contact or bearing surfaces is convexly curved.Type: ApplicationFiled: December 18, 2012Publication date: January 15, 2015Applicant: SIEMENS AKTIENGESELLSCHAFTInventors: Joachim Gericke, Robert Gruenler, Martin Krehnke, Volker Lehmann, Friedrich Loebner