Patents by Inventor Michael H. Stalder
Michael H. Stalder 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: 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: 9960530Abstract: A terminal connection device for connecting an end of a medium- or high-voltage power cable to a connection point comprises a) an interface cable having first and second end portions, comprising an inner conductor and a conductive or semiconductive layer; b) a first stress control tube comprising a stress control element, and an insulating layer arranged around the stress control element, wherein the first stress control tube is mounted on the first end portion of the interface cable; c) a first cable connector for connecting the interface cable to the power cable, the first cable connector being connected to the second end portion of the interface cable; and d) one or more tubular shrinkable sleeves, at least a portion of one of the tubular shrinkable sleeves extending over at least a portion of the first stress control tube wherein the portion of the tubular shrinkable sleeve extending over at least a portion of the first stress control tube is shrunk down around at least a portion of the first stress contrType: GrantFiled: August 25, 2016Date of Patent: May 1, 2018Assignee: 3M Innovative Properties CompanyInventors: Giuliano Bolcato, Jens Weichold, Pasquale Zanoli, Mark Gravermann, Michael H. Stalder, Holger J. Kurzhals, Sebastian Eggert, Christian Weinmann
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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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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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Publication number: 20170234908Abstract: The invention relates to a voltage sensing device (1) for a high and/or medium voltage power carrying conductor (2), the voltage sensing device comprising: a radially outer electrode (3) operable as a first sensing electrode of a sensing capacitor for sensing the voltage of the power carrying conductor; a radially inner electrode (2, 6) operable as a second sensing electrode of the sensing capacitor; a dielectric material (5) arranged between the inner and the outer electrode (3, 2, 6), wherein the coefficient of thermal expansion of the material of at least one electrode (3, 2, 6) is selected such that it compensates the temperature dependent parameters of the dielectric material (5) and/or the other electrode (3, 2, 6), that influences the capacity of the voltage sensing capacitorType: ApplicationFiled: September 25, 2015Publication date: August 17, 2017Inventors: Mark Gravermann, Gunther A.J. Stollwerck, Michael H. Stalder, Hermanus Franciscus Maria van Meijl, Jens Weichold, Benjamin Muenstermann
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Patent number: 9640904Abstract: Sensored cable (1) for distribution of electrical power in a power network, the sensored cable comprising an inner conductor and an insulating layer (10) arranged concentrically around at least an axial section of the inner conductor. The sensored cable further comprises a capacitive voltage sensor (100) for sensing a voltage of the inner conductor, characterized by the sensor including a printed circuit board element (60), which is placed over an electrically isolated piece (140) of conductive or semiconductive material, arranged on the insulating layer of the cable. The electrically isolated piece (140) of conductive or semiconductive material is operable to form an electrode of a sensing capacitor of the capacitive voltage sensor. The cable may comprise a (semi-) conductive layer (20). The electrically isolated piece (40) of conductive or semiconductive material may comprise a portion of the (semi-) conductive layer.Type: GrantFiled: December 19, 2012Date of Patent: May 2, 2017Assignee: 3M Innovative Properties CompanyInventors: Christian Weinmann, Holger J. Kurzhals, Michael H. Stalder, Sebastian Eggert, Jens Weichold
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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: 20160365670Abstract: A terminal connection device for connecting an end of a medium- or high-voltage power cable to a connection point comprises a) an interface cable having first and second end portions, comprising an inner conductor and a conductive or semiconductive layer; b) a first stress control tube comprising a stress control element, and an insulating layer arranged around the stress control element, wherein the first stress control tube is mounted on the first end portion of the interface cable; c) a first cable connector for connecting the interface cable to the power cable, the first cable connector being connected to the second end portion of the interface cable; and d) one or more tubular shrinkable sleeves, at least a portion of one of the tubular shrinkable sleeves extending over at least a portion of the first stress control tube wherein the portion of the tubular shrinkable sleeve extending over at least a portion of the first stress control tube is shrunk down around at least a portion of the first stress contrType: ApplicationFiled: August 25, 2016Publication date: December 15, 2016Inventors: GIULIANO BOLCATO, JENS WEICHOLD, PASQUALE ZANOLI, MARK GRAVERMANN, MICHAEL H. STALDER, HOLGER J. KURZHALS, SEBASTIAN EGGERT, CHRISTIAN WEINMANN
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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: 9429594Abstract: Terminal connection device for connecting an end of a medium- or high-voltage power cable to a connection point, comprising an interface cable, an inner conductor and a conductive or semiconductive layer. The terminal connection device further comprises a first stress control tube comprising a stress control element and an insulation layer arranged around the stress control element. The terminal connection device further comprises a first cable connector for connecting the interface cable to the power cable. The terminal connection device further comprises a second stress control tube comprising a stress control element and an insulating layer arranged around the stress control element, wherein the second stress control tube is mounted over the second end portion of the interface cable and at least a portion of the first cable connector. The terminal connection device further comprises one or more tubular shrinkable sleeves.Type: GrantFiled: December 19, 2012Date of Patent: August 30, 2016Assignee: 3M Innovative Properties CompanyInventors: Giuliano Bolcato, Jens Weichold, Pasquale J. Zanoli, Mark Gravermann, Michael H. Stalder, Holger Kurzhals, Sebastian Eggert, Christian Weinmann
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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: 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: 20140368221Abstract: Sensored cable (1) for distribution of electrical power in a power network, the sensored cable comprising an inner conductor and an insulating layer (10) arranged concentrically around at least an axial section of the inner conductor. The sensored cable further comprises a capacitive voltage sensor (100) for sensing a voltage of the inner conductor, characterized by the sensor including a printed circuit board element (60), which is placed over an electrically isolated piece (140) of conductive or semiconductive material, arranged on the insulating layer of the cable. The electrically isolated piece (140) of conductive or semiconductive material is operable to form an electrode of a sensing capacitor of the capacitive voltage sensor. The cable may comprise a (semi-) conductive layer (20). The electrically isolated piece (40) of conductive or semiconductive material may comprise a portion of the (semi-) conductive layer.Type: ApplicationFiled: December 19, 2012Publication date: December 18, 2014Inventors: Christian Weinmann, Holger J. Kurzhals, Michael H. Stalder, Sebastian Eggert, Jens Weichold
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Publication number: 20140370741Abstract: Terminal connection device (10) for connecting an end of a medium- or high-voltage power cable (42) to a connection point, the terminal connection device (10) comprising an interface cable (12) having first and second end portions, comprising an inner conductor (14) and a conductive or semiconductive layer (18). The terminal connection device further comprises a first stress control tube (36) comprising—a stress control element (38), and an insulating layer (40) arranged around the stress control element (38), wherein the first stress control tube (36) is mounted on the first end portion of the interface cable (12).Type: ApplicationFiled: December 19, 2012Publication date: December 18, 2014Inventors: Giuliano Bolcato, Jens Weichold, Pasquale J. Zanoli, Mark Gravermann, Michael H. Stalder, Holger Kurzhals, Sebastian Eggert, Christian Weinmann