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公开(公告)号：US10338103B2
公开(公告)日：2019-07-02
申请号：US15510832
申请日：2015-09-25
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： Mark Gravermann , Gunther A. J. Stollwerck , Michael H. Stalder , Hermanus Franciscus Maria van Meijl , Jens Weichold , Benjamin Muenstermann
Abstract: 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 capacitor.
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公开(公告)号：US20170030946A1
公开(公告)日：2017-02-02
申请号：US15106591
申请日：2014-12-16
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： 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
CPC classification number: G01R15/16 , G01R15/142 , G01R15/181 , G01R19/0084
Abstract: 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.
Abstract translation: 用于电力网络的高压或中压供电导体的电压传感器（1），例如电力电缆或电缆连接器或汇流条的内部导体。 电压传感器具有管状形状和可接收导体的轴向通道（40）。 所述电压感测装置包括：a）径向内部电极（20），其可用作感测电容器的第一感测电极，用于感测所述功率承载导体的电压; b）径向外部电极（30），其可操作为 感测电容器的第二感测电极，以及c）固体载体元件（10），其至少第一部分布置在所述内部电极和所述外部电极之间，所述第一部分可操作为所述感测电容器的电介质 。 传感器可以容纳在电缆附件中。 载体元件可以包括陶瓷材料以提高精度。
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公开(公告)号：US12130308B2
公开(公告)日：2024-10-29
申请号：US17753328
申请日：2020-09-14
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： Guenther A. J. Stollwerck , Mark Gravermann , Bernd Schubert , Christine B. Bund , Mirco Gunjaca , Jens Weichold , Johannes Fink , Michael H. Stalder , Sebastian Eggert-Richter , Harald Westkamp , Willy A. Ahlmann , Guenter M. Zilligen
CPC classification number: G01R15/16 , G01R15/04 , G01R19/0084
Abstract: Voltage sensor (1) comprising a voltage divider (40) for sensing an AC voltage of a HV/MV power conductor (10). For adjusting the common overall impedance of the low-voltage portion of the voltage divider towards a desired impedance, the low-voltage portion (60) comprises one or more low-voltage impedance elements (110), a plurality of adjustment impedance elements (80) and a plurality of switches. In its connect state, each switch electrically connects an adjustment impedance element in parallel to at least one of the one or more low-voltage impedance elements (110). The overall impedance of the high-voltage portion (50) and the overall impedance of the low-voltage portion (60) of the voltage divider (40) are adapted such that, by bringing one or more of the switches (90) into their connect state, the voltage divider (40) has, for an AC voltage of between 5 and 25 kV phase-to-ground and a frequency of between 40 and 70 Hertz, a dividing ratio of 3077, of 6154, of 6769 or of 10 000.
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公开(公告)号：US20240150551A1
公开(公告)日：2024-05-09
申请号：US18550489
申请日：2022-03-31
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： Tom Gaide , Jens Eichler , Christian Weinmann , Friedrich M. Wolff , Stefan V. Friedrich , Karoline Anne Ostrowski , Adrian S. Eckert , Michael H. Stalder , Philipp Jurgen Semmler , Badri Veeraraghavan , Klaus Hintzer , Jennifer J. Sokol
IPC: C08K9/04 , B29C64/124 , C08K9/02 , H05K9/00 , B29K509/08
CPC classification number: C08K9/04 , B29C64/124 , C08K9/02 , H05K9/0083 , B29K2509/08 , B29K2995/0011 , B29K2995/0063 , C08K2201/003
Abstract: The present disclosure provides compositions, articles, and methods related to altering electromagnetic radiation. An actinic radiation curable precursor composition of a three-dimensional article includes a) a resin comprising an actinic radiation curable component, wherein the resin has a viscosity no greater than 500 cP; b) hollow glass microspheres having a density no greater than 2 g/mL and an average diameter no greater than 200 micrometers; and c) a photoinitiator. At least part of the surface of the hollow glass microspheres comprises a surface coating or modification. An article includes a photo(co)polymerization reaction product of the composition. A method of manufacturing a three-dimensional article includes the steps of a) providing an actinic radiation curable precursor composition; and b) selectively exposing a portion of the composition to a source of actinic radiation to at least partially cure the exposed portion of the composition, thereby forming a cured layer. Steps a) and b) are repeated so as to form a three-dimensional article. A three-dimensional article is provided, obtained according to the method. Methods of interfering with electromagnetic radiation originating from an electromagnetic radiation producing device are provided, including integrating an article into the electronic device or placing an article in the vicinity of the electromagnetic radiation producing device.
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公开(公告)号：US11937043B2
公开(公告)日：2024-03-19
申请号：US17621438
申请日：2020-06-23
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： Sebastian Eggert-Richter , Michael H. Stalder , Christian Weinmann , Benhard C. Schneider , Paul H. R. Jolly
CPC classification number: H04R1/1083 , H04R1/1008 , H04W4/029 , H04R2420/07
Abstract: A hearing protection device is provided. The hearing protection device includes a first earmuff connected to a second earmuff by a headband. Each of the first and second earmuffs are configured to dampen ambient sound. The hearing protection device also includes an antenna, located within a housing of the first earmuff. The antenna comprises a rigid portion coupled to a flexible portion. Both the rigid portion and the flexible portion are fixed within the housing. The flexible portion is configured to remain substantially in line with a ground plane with respect to the rigid portion.
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Patent Agency Ranking
公开(公告)号：US11683880B2
公开(公告)日：2023-06-20
申请号：US17250905
申请日：2019-10-16
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： Gunther A. J. Stollwerck , Mark Gravermann , Jens Weichold , Sebastian Eggert-Richter , Michael H. Stalder
CPC classification number: H05K1/0254 , G01R1/18 , G01R15/16 , H05K1/111 , H05K5/065 , H05K9/0007 , H05K1/181 , H05K2201/09163 , H05K2201/10015
Abstract: Encapsulated PCB assembly (1) for electrical connection to a high- or medium-voltage power conductor in a power distribution network of a national grid, comprising a) a PCB (10), delimited by a peripheral edge (20) and comprising a high-tension pad (60, 62) on a voltage of at least one kilovolt, b) an electrically insulating encapsulation body (70) in surface contact with, and enveloping, the high-tension pad and at least a portion of the PCB edge adjacent to the high-tension pad, c) a shielding layer (80) on an external surface (90) of the encapsulation body and for being held on electrical ground or on a low voltage to shield at least a low-voltage portion of the PCB. The high-tension pad extends to the peripheral edge of the PCB.
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公开(公告)号：US11327096B2
公开(公告)日：2022-05-10
申请号：US16771950
申请日：2018-12-17
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Abstract: A voltage divider assembly for a voltage-dividing sensor for sensing a voltage of a MV/HV power conductor in a power network includes a plurality of discrete impedance elements electrically connected in series with each other such as to be operable as a high-voltage cable side of the voltage-dividing sensor and a cable connector for mechanical engagement with a cable plug at an end of a tap cable conducting the voltage of the power conductor to the voltage divider assembly. The cable connector is electrically connected with one discrete impedance element of the plurality of discrete impedance elements.
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公开(公告)号：US20210072288A1
公开(公告)日：2021-03-11
申请号：US16771950
申请日：2018-12-17
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Abstract: Voltage divider assembly (1) for a voltage-dividing sensor for sensing a voltage of a MV/HV power conductor in a power network, comprising a) a plurality of discrete impedance elements (100), electrically connected in series with each other such as to be operable as a high-voltage cable side of the voltage-dividing sensor; b) a cable connector (150) for mechanical engagement with a cable plug (140) at an end of a tap cable (130) conducting the voltage of the power conductor to the voltage divider assembly. The cable connector (150) is electrically connected with one discrete impedance element (100a) of the plurality of discrete impedance elements (100, 100a).
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公开(公告)号：US20200174042A1
公开(公告)日：2020-06-04
申请号：US16620665
申请日：2018-06-13
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： Michael H. Stalder , Sebastian Eggert-Richter , Rainer Fangrat , Mark Gravermann , Jens Weichold , Gunther A.J. Stollwerck , Bernd Schubert , Hermanus Franciscus Maria Van Meijl , Andreea Sabo
Abstract: Impedance assembly (2) for use in a voltage divider for sensing an AC voltage of at least 1 kV versus ground of a power-carrying conductor distributing electrical energy in a grid. The impedance assembly comprises a) a printed circuit board (131) comprising one or more dielectric board layers (210, 215, 220), b) an externally accessible high-voltage contact (100), c) an externally accessible low-voltage contact (110), spaced from the high-voltage contact by at least 30 mm, and d) at least two dividing capacitors (91), connected in series between the high-voltage contact and the low-voltage contact and operable as a high-voltage side of the voltage divider. Each dividing capacitor has two electrodes formed by conductive areas (301, 302, 303, 304, 305, 306), arranged on opposed surface portions of a specific dielectric board layer, and a dielectric comprising a portion of the specific dielectric board layer on which the electrodes are arranged. Instead of the dividing capacitors, the impedance assembly may comprise a resistor layer.
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公开(公告)号：US20190086444A1
公开(公告)日：2019-03-21
申请号：US16087768
申请日：2016-12-23
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： Mark Gravermann , Gunther A.J. Stollwerck , Michael H. Stalder , Gerhard Lohmeier , Bernd Schubert , Rainer Reeken , Jens Weichold
Abstract: Elastic sleeve (1) for electrically insulating a HV/MV power conductor in a power network, comprising a) a shrinkable or expandable elastic sleeve body (10); b) a receiving space (20) in the sleeve body, for receiving the power conductor; c) a cavity (30) formed in the sleeve body; and d) a divider assembly (40), arranged, at least partially, in the cavity and comprising a plurality of discrete impedance elements, operable as a voltage divider for sensing a voltage of an inner conductor of the power conductor.
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