3m Innovative Properties Company

Christian Weinmann

Michael H Stalder

Sebastian Eggert

Jens Weichold

Mark Gravermann

Ronald David Jesme

Dipankar Ghosh

Mathieu Nesme

Holger J Kurzhals

Nicholas T Gabriel

Myungchan Kang

Bernd Schubert

Gerhard Lohmeier

Giuliano Bolcato

Friedrich A Busemann

Hermanus Franciscus Maria Van Meijl

Anton Kuepper

Christopher D Sebesta

Pasquale J Zanoli

Stefan Schoene

Rainer Reeken

Gerardus A C A Nuiten

Andreea Sabo

John P Baetzold

Andrew P Bonifas

Justin M Johnson

Jaewon Kim

Guy Metral

Bret W Ludwig

Craig W Lindsay

Johannes Fink

Guenter M Zilligen

Zohaib Hameed

Michael Petry

Kristin J Godbey

Werner Roehling

Sebastian Eggert-Richter

Markus G W Lierse

Benjamin Muenstermann

Manfred Bauer

Volker Korsten

Benhard C Schneider

Paul H R Jolly

Holger Kurzhals

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.

Antenna for protective personal equipment

Radio frequency identification (RFID) tags are described that include a substrate, an antenna disposed on a major surface of the substrate, an integrated circuit (IC) disposed on a major surface of the substrate, and one or more stand-alone capacitors disposed on a major surface of the substrate. The antenna may have a length less than about 2 meters between first and second ends of the antenna. The integrated circuit may have an effective capacitance less than about 1000 pF and the one or more stand-alone capacitors may have an equivalent capacitance greater than 500 pF and may be connected in parallel with the antenna and the IC.

Radio frequency identification tag

Radar radiation redirecting tapes () include a first plurality of individual radar-reflecting directional antennae (). Each directional antenna comprises at least three elongate, unevenly spaced antenna conductors (), arranged with their long extensions parallel to each other in the plane of the tape, such that the directional antenna is operable to reflect incoming radar radiation predominantly in a direction () which is orthogonal to the long extension of the antenna conductors and parallel to the plane of the tape.

Radar radiation redirecting tape

Wireless sensing devices including stable near-field antennas are provided. A spacer layer is attached to a portion of the substrate adjacent to the antenna. The spacer layer has a thickness T, a relative permittivity k, and a figure of merit defined as the ratio of T (in micrometers) by k. The spacer layer has the figure of merit no less than 20 (micrometers).

Wireless sensing devices including stable near-field antenna

At least some aspects of the present disclosure feature a communication device for propagating an electromagnetic wave around a blocking structure. The communication device includes a passive coupling device to capture the electromagnetic wave, and a waveguide electromagnetically coupled to the coupling device. The waveguide is disposed around the blocking structure. The waveguide has a resonance frequency matched with the coupling device. The waveguide is configured to propagate the electromagnetic wave captured by the coupling device.

Communication devices and systems with coupling device and waveguide

The invention relates to a voltage sensing device for a high and/or medium-voltage power-carrying conductor, the voltages sensing device comprising: &#x2022; a carrier element () with a passageway for receiving the power-carrying conductor, &#x2022; wherein the carrier element comprises an electrode () extending in an axial direction of the passageway of the carrier element and operable as a first electrode of the voltage sensing device, wherein &#x2022; a conductor () of the power cable is operable as the second electrode of the voltage sensing device and wherein &#x2022; the carrier element has a coefficient of thermal expansion that is less than 5&#xd7;10^&#x2212;6 1/K at 20 C.

Voltage sensing device

Voltage sensor () 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 (), which can receive the conductor. The voltage sensing device comprises a) a radially-inner electrode (), operable as a first sensing electrode of a sensing capacitor for sensing the voltage of the power-carrying conductor, b) a radially-outer electrode (), operable as a second sensing electrode of the sensing capacitor, and c) a solid carrier element (), 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.

Voltage Sensor

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 control tube.

Terminal connection device for a power cable

Sensored cable () for distribution of electrical power in a power network, the sensored cable comprising an inner conductor and an insulating layer () arranged concentrically around at least an axial section of the inner conductor. The sensored cable further comprises a capacitive voltage sensor () for sensing a voltage of the inner conductor, characterized by the sensor including a printed circuit board element (), which is placed over an electrically isolated piece () of conductive or semiconductive material, arranged on the insulating layer of the cable. The electrically isolated piece () 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 (). The electrically isolated piece () of conductive or semiconductive material may comprise a portion of the (semi-) conductive layer.

Sensored cable for a power network

Passive fibre-optic enclosure comprising, a) one or more fibre-optic functional units of a telecommunication network, optically connectable, via an optical fibre, with a central network unit, for receiving telecommunication signals for one or more subscribers via the optical fibre from the central network unit, characterized in that the enclosure further comprises, on the inside of the enclosure, b) transceiving means, which is operable to generate first optical signals using electrical energy, which is operable to receive optical response signals from the central network unit, which is optically connectable to the optical fibre such that the first optical signals can be transmitted by the optical fibre to the central network unit, and such that optical response signals can be transmitted by the optical fibre from the central network unit to the transceiving means.

Fibre-optic enclosure having transceiving means operable to generate and receive optical signals

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.

A telecommunications jack () is described for making electrical connection to a mating plug () such that the electrical signals travel along a signal path through the jack and the plug when connected. The telecommunications jack includes a first supporting printed circuit board () holding an array of front contacts () that are connectable to telecommunication wires and a second compensating printed circuit board () comprising electrical compensation components for reducing crosstalk. The front contacts have a section that is in the signal path and a section that is outside the signal path. At least one electrical compensation component of the second printed circuit board is electrically connected to at least one front contact in the signal path and another electrical compensation component is electrically connected to at least one front contact in the section outside of the signal path.

Telecommunication jack comprising a second compensating printed circuit board for reducing crosstalk

The invention provides a material for packaging of electronic components comprising a structured layer, wherein said structured layer comprises a mesh of cells, each cell comprising an electrically conductive rim and an electrically non conductive interior, said cells being interconnected so that any two adjacent cells share at least a portion of their respective rims.

Material for packaging electronic components

A telecommunications connector () comprises an array of contacts () connectable to telecommunications wire pairs, the contacts being of a first type or a second type. The first type of contact is shaped so that its contact region (B) extends in a first direction and the second type of contact is shaped so that its contact region extends in an opposing direction. In an embodiment in the form of an RJ45 jack, to introduce crosstalk compensation, the contacts '' to '' in the inner zone of the array are alternately of the first and second types; and the contacts &#x201c;&#x201d; and &#x201c;&#x201d; of each pair in the remainder of the array are respectively of the same type but different from the adjacent contact in the inner zone.

Telecommunications connector

A telecommunications jackis described that comprises a housingdefining a port for receiving a plug; contactsfor making an electrical connection with wires of a cable; interface contactsfor making an electrical connection with contacts of the plug; and a multilayer printed circuit board (PCB)for electrically connecting the contactsand the interface contacts. The multilayer PCB comprises a free-floating ground plane structure formed from two outer layers of the multilayer PCB and a plurality of internal layersB,C,D,E having a plurality of electronic devicesdisposed thereon. The two outer layersof the multilayer PCB include a continuous coatingof electrically conductive material covering at least those parts of the PCB that include the electronic devices and wherein the two outer layers of the PCB are electrically connected with each other and are electrically isolated from the internal layers of the PCB.

Growing community of inventors

Alsdorf, Germany

Christian Weinmann