Patents by Inventor Friedrich A. Busemann
Friedrich A. Busemann 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: 10345340Abstract: The invention relates to a voltage sensing device for a high and/or medium-voltage power-carrying conductor, the voltages sensing device comprising: • a carrier element (3) with a passageway for receiving the power-carrying conductor, • wherein the carrier element comprises an electrode (4) extending in an axial direction of the passageway of the carrier element and operable as a first electrode of the voltage sensing device, wherein • a conductor (1) of the power cable is operable as the second electrode of the voltage sensing device and wherein • the carrier element has a coefficient of thermal expansion that is less than 5×10^?6 1/K at 20 C.Type: GrantFiled: December 16, 2014Date of Patent: July 9, 2019Assignee: 3M Innovative Properties CompanyInventors: Mark Gravermann, Friedrich A. Busemann, Bernd Schubert, Gerhard Lohmeier, Andreea Sabo, Rainer Reeken, Michael H. Stalder, Christian Weinmann, Sebastian Eggert, Dipankar Ghosh, Myungchan Kang, Christopher D. Sebesta
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Patent number: 10215778Abstract: Voltage sensor (1) for a high- or medium-voltage power-carrying conductor for a power network, such as an inner conductor of a power cable or a cable connector or a bus bar. The voltage sensor has a tubular shape and an axial passageway (40), which can receive the conductor. The voltage sensing device comprises a) a radially-inner electrode (20), operable as a first sensing electrode of a sensing capacitor for sensing the voltage of the power-carrying conductor, b) a radially-outer electrode (30), operable as a second sensing electrode of the sensing capacitor, and c) a solid carrier element (10), at least a first portion of which is arranged between the inner electrode and the outer electrode, the first portion being operable as a dielectric of the sensing capacitor. The sensor can be accommodated in a cable accessory. The carrier element may comprise ceramic material to increase accuracy.Type: GrantFiled: December 16, 2014Date of Patent: February 26, 2019Assignee: 3M Innovative Properties CompanyInventors: Mark Gravermann, Sebastian Eggert, Michael Petry, Werner Roehling, Friedrich A. Busemann, Bernd Schubert, Gerhard Lohmeier, Michael H. Stalder, Jens Weichold, Rainer Reeken, Andreea Sabo, Christian Weinmann, Dipankar Ghosh, Myungchan Kang, Christopher D. Sebesta
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Patent number: 10027071Abstract: Cable connection device for connecting a power cable to an electrical installation of a power network, comprising a conductor element having a first end portion, a second end portion, and a middle portion disposed between the first and the second end portion. The conductor element comprises a connector socket arranged at the first end portion, for mating with a cable plug. The connector socket is integrally formed with the middle portion.Type: GrantFiled: June 19, 2014Date of Patent: July 17, 2018Inventors: Mark Gravermann, Friedrich A. Busemann, Gerhard Lohmeier, Jens Weichold, Bernd Schubert, Giuliano Bolcato, Werner Roehling, Michael Petry
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Patent number: 9739820Abstract: A conductor assembly for a power network includes an inner conductor, an insulating layer arranged concentrically around the inner conductor, and a sensing electrode, arranged radially outward of the insulating layer, and operable as a first electrode of a sensing capacitor of a voltage sensor. The conductor assembly further includes a voltage pickup element having electrically conductive major surfaces, the first major surface being in a surface contact with the sensing electrode. The conductor assembly further includes an electrode wire, in electrical and mechanical contact with the voltage pickup element, for electrically connecting the voltage pickup element with an electric or electronic component disposed remote from the sensing electrode.Type: GrantFiled: June 19, 2014Date of Patent: August 22, 2017Assignee: 3M Innovative Properties CompanyInventors: Mark Gravermann, Friedrich A. Busemann, Gerhard Lohmeier, Jens Weichold, Bernd Schubert, Michael H. Stalder, Pasquale Zanoli, Giuliano Bolcato
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Patent number: 9739804Abstract: Closure (1) for receiving a section of a conductor assembly (71), comprising a housing (25) closable around the conductor assembly (71), and an electrode assembly (200), which comprises a movable portion comprising a contact surface (150) for mechanically contacting the conductor assembly (71), and a sensing electrode (140), operable as a first capacitor electrode of a sensing capacitor for sensing a voltage of the conductor (80). The closure further comprises urging means (160) for urging the movable portion of the electrode assembly (200) towards the conductor assembly (71) for establishing a mechanical surface contact between the contact surface (150) and the conductor assembly (71), when the housing (25) is closed around the conductor assembly (71).Type: GrantFiled: May 8, 2014Date of Patent: August 22, 2017Assignee: 3M Innovative Properties CompanyInventors: Friedrich A. Busemann, Gerhard Lohmeier, Mark Gravermann
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Patent number: 9739805Abstract: A conductor assembly for a power network includes an inner conductor defining radial and axial directions, an insulating layer arranged around at least an axial section of the inner conductor, and a sensing electrode arranged radially outward of the insulating layer. The sensing electrode is operable as a first electrode of a sensing capacitor of a capacitive voltage sensor, in which sensing capacitor the inner conductor is operable as a second electrode. The conductor assembly further includes an electrically insulating spacer element arranged radially between the insulating layer and the sensing electrode.Type: GrantFiled: June 19, 2014Date of Patent: August 22, 2017Assignee: 3M Innovative Properties CompanyInventors: Mark Gravermann, Friedrich A. Busemann, Gerhard Lohmeier, Jens Weichold, Bernd Schubert, Michael H. Stalder, Pasquale Zanoli, Giuliano Bolcato
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Publication number: 20170030946Abstract: Voltage sensor (1) for a high- or medium-voltage power-carrying conductor for a power network, such as an inner conductor of a power cable or a cable connector or a bus bar. The voltage sensor has a tubular shape and an axial passageway (40), which can receive the conductor. The voltage sensing device comprises a) a radially-inner electrode (20), operable as a first sensing electrode of a sensing capacitor for sensing the voltage of the power-carrying conductor, b) a radially-outer electrode (30), operable as a second sensing electrode of the sensing capacitor, and c) a solid carrier element (10), at least a first portion of which is arranged between the inner electrode and the outer electrode, the first portion being operable as a dielectric of the sensing capacitor. The sensor can be accommodated in a cable accessory. The carrier element may comprise ceramic material to increase accuracy.Type: ApplicationFiled: December 16, 2014Publication date: February 2, 2017Inventors: Mark Gravermann, Sebastian Eggert, Michael Petry, Werner Roehling, Friedrich A. Busemann, Bernd Schubert, Gerhard Lohmeier, Michael H. Stalder, Jens Weichold, Rainer Reeken, Andreea Sabo, Christian Weinmann, Dipankar Ghosh, Myungchan Kang, Christopher D. Sebesta
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Publication number: 20160341768Abstract: The invention relates to a voltage sensing device for a high and/or medium-voltage power-carrying conductor, the voltages sensing device comprising: • a carrier element (3) with a passageway for receiving the power-carrying conductor, • wherein the carrier element comprises an electrode (4) extending in an axial direction of the passageway of the carrier element and operable as a first electrode of the voltage sensing device, wherein • a conductor (1) of the power cable is operable as the second electrode of the voltage sensing device and wherein • the carrier element has a coefficient of thermal expansion that is less than 5x10??6 1/K at 20 C.Type: ApplicationFiled: December 16, 2014Publication date: November 24, 2016Inventors: Mark Gravermann, Friedrich A. Busemann, Bernd Schubert, Gerhard Lohmeier, Andreea Sabo, Rainer Reeken, Michael H. Stalder, Christian Weinmann, Sebastian Eggert, Dipankar Ghosh, Myungchan Kang, Christopher D. Sebesta
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Patent number: 9460832Abstract: Sleeve (1) for a high- or medium-voltage power cable (120) having an inner conductor (130). The sleeve comprises (i) a tubular sleeve body (10) having an electrically conductive or semiconductive first axial electrode section (60), and (ii) a circuit board (30). The sleeve is radially expandable or shrinkable. It can be arranged radially outward of the inner conductor, such hat the first axial electrode section is radially separated from the inner conductor by at least an electrically insulating spacer layer (140). The circuit board is at least partially arranged radially outward of the sleeve body and comprises an electrical contact (100) which is electrically connected with the first axial electrode section.Type: GrantFiled: January 29, 2014Date of Patent: October 4, 2016Assignee: 3M Innovative Properties CompanyInventors: Mark Gravermann, Gerhard Lohmeier, Michael Stalder, Friedrich Busemann, Jens Weichold, Bernd Schubert
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Publication number: 20160139181Abstract: Conductor assembly (1) for a power network, which comprises—an inner conductor (5) defining radial and axial directions,—an insulating layer (10) arranged around at least an axial section of the inner conductor, and—a sensing electrode (40), arranged radially outward of the insulating layer, and operable as a first electrode of a sensing capacitor of a capacitive voltage sensor, in which sensing capacitor the inner conductor is operable as a second electrode. The conductor assembly further comprises an electrically insulating spacer element (25), arranged radially between the insulating layer and the sensing electrode.Type: ApplicationFiled: June 19, 2014Publication date: May 19, 2016Inventors: Mark Gravermann, Friedrich A. Busemann, Gerhard Lohmeier, Jens Weichold, Bernd Schubert, Michael H. Stalder, Pasquale Zanoli, Giuliano Bolcato
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Publication number: 20160134065Abstract: Cable connection device (2) for connecting a power cable to an electrical installation of a power network, comprising a conductor element (11) having a first end portion (21), a second end portion (31), and a middle portion (41) disposed between the first and the second end portion. The conductor element comprises a connector socket (50), arranged at the first end portion, for mating with a cable plug. The connector socket is integrally formed with the middle portion.Type: ApplicationFiled: June 19, 2014Publication date: May 12, 2016Inventors: Mark Gravermann, Friedrich A. Busemann, Gerhard Lohmeier, Jens Weichold, Bernd Schubert, Giuliano Bolcato, Werner Roehling, Michael Petry
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Publication number: 20160124035Abstract: Conductor assembly (1) for a power network, comprising an inner conductor (5), an insulating layer (10) arranged concentrically around the inner conductor (5), and a sensing electrode (40), arranged radially outward of the insulating layer (10), and operable as a first electrode of a sensing capacitor of a voltage sensor. The conductor assembly (1) further comprises a voltage pickup element (70), comprising electrically conductive major surfaces (71, 72), the first major surface (71) being in a surface contact with the sensing electrode (40, 40). The conductor assembly further comprises an electrode wire (80), in electrical and mechanical contact with the voltage pickup element (70), for electrically connecting the voltage pickup element (70) with an electric or electronic component disposed remote from the sensing electrode (40).Type: ApplicationFiled: June 19, 2014Publication date: May 5, 2016Inventors: Mark Gravermann, Friedrich A. Busemann, Gerhard Lohmeier, Jens Weichold, Bernd Schubert, Michael H. Stalder, Pasquale Zanoli, Giuliano Bolcato
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Publication number: 20160084888Abstract: Closure (1) for receiving a section of a conductor assembly (71), comprising a housing (25) closable around the conductor assembly (71), and an electrode assembly (200), which comprises a movable portion comprising a contact surface (150) for mechanically contacting the conductor assembly (71), and a sensing electrode (140), operable as a first capacitor electrode of a sensing capacitor for sensing a voltage of the conductor (80). The closure further comprises urging means (160) for urging the movable portion of the electrode assembly (200) towards the conductor assembly (71) for establishing a mechanical surface contact between the contact surface (150) and the conductor assembly (71), when the housing (25) is closed around the conductor assembly (71).Type: ApplicationFiled: May 8, 2014Publication date: March 24, 2016Inventors: Friedrich A. Busemann, Gerhard Lohmeier, Mark Gravermann
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Publication number: 20160005511Abstract: Sleeve (1) for a high- or medium-voltage power cable (120) having an inner conductor (130). The sleeve comprises (i) a tubular sleeve body (10) having an electrically conductive or semiconductive first axial electrode section (60), and (ii) a circuit board (30). The sleeve is radially expandable or shrinkable. It can be arranged radially outward of the inner conductor, such hat the first axial electrode section is radially separated from the inner conductor by at least an electrically insulating spacer layer (140). The circuit board is at least partially arranged radially outward of the sleeve body and comprises an electrical contact (100) which is electrically connected with the first axial electrode section.Type: ApplicationFiled: January 29, 2014Publication date: January 7, 2016Applicant: 3M INNOVATIVE PROPERTIES COMPANYInventors: Mark Gravermann, Gerhard Lohmeier, Michael Stalder, Friedrich Busemann, Jens Weichold, Bernd Schubert
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Patent number: 7767909Abstract: The tubular terminal for a cable, in particular a medium or high voltage cable, comprises a first connector having at least one terminal end for connecting to at least one mating second connector adapted to be connected to a cable and engaged with the first connector for making electrical contact therewith upon connection of the second connector to the at least one terminal end of the first connector. Furthermore, the tubular terminal comprises a shrinkable sleeve having a first tubular portion and a second tubular portion extending from the first tubular portion. The first tubular portion of the shrinkable sleeve is fixedly arranged around the first connector. The second tubular portion of the shrinkable sleeve is adapted to extend beyond the at least one terminal end of the first connector for covering a mating second connector and cable attached thereto when the second connector is connected to the at least one terminal end of the first connector.Type: GrantFiled: April 23, 2007Date of Patent: August 3, 2010Assignee: 3M Innovative Properties CompanyInventors: Raymond Krabs, Gerhard Lohmeier, Attila Z. Kis, Jens Weichold, Michael Petry, Giuliano Bolcato, Bernd Schubert, Friedrich A. Busemann, Thomas Herdtle