EP0587492B1 - Low-noise cable - Google Patents
Low-noise cable Download PDFInfo
- Publication number
- EP0587492B1 EP0587492B1 EP93402173A EP93402173A EP0587492B1 EP 0587492 B1 EP0587492 B1 EP 0587492B1 EP 93402173 A EP93402173 A EP 93402173A EP 93402173 A EP93402173 A EP 93402173A EP 0587492 B1 EP0587492 B1 EP 0587492B1
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- EP
- European Patent Office
- Prior art keywords
- dielectric
- conductive
- cable
- silicone coating
- parts
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B11/00—Communication cables or conductors
- H01B11/02—Cables with twisted pairs or quads
- H01B11/06—Cables with twisted pairs or quads with means for reducing effects of electromagnetic or electrostatic disturbances, e.g. screens
- H01B11/10—Screens specially adapted for reducing interference from external sources
- H01B11/1058—Screens specially adapted for reducing interference from external sources using a coating, e.g. a loaded polymer, ink or print
- H01B11/1066—Screens specially adapted for reducing interference from external sources using a coating, e.g. a loaded polymer, ink or print the coating containing conductive or semiconductive material
Definitions
- the present invention relates to cables with low noise level, having an operating temperature of around 250 ° c.
- Such cables are shielded cables. They include a conductive core covered with a PTFE dielectric, a conductive layer disposed on the dielectric and covered with shielding, and an outer insulating sheath of protection covering the shielding.
- the conductive layer combined with shielding provides protection improved, especially at low frequencies, where the cable is said to be anti-noise.
- This shielding is generally constituted by a braid of conductive wires, in particular bare copper wires, nickel or silver plated.
- the conductive layer is consisting of a conductive tape or preferably a conductive varnish, the latter giving the cable a better noise immunity than tape.
- Conductive varnishes are varnishes based on a PTFE polymer loaded with fine conductive particles. They adhere very strongly to the dielectric; they have a very reliable hold on the dielectric and lead to low noise level desired.
- Document DE-A-27 23 488 discloses a varnish conductor of the aforementioned type, which is peeled off by incorporation of separation agents comprising silicones in its basic composition. Such a varnish then has good adhesion to the dielectric of a cable, while being peelable and therefore easily separable from this dielectric.
- a conductive composition for protection against parasitic currents in cables which is based on silicone loaded with fine conductive particles and is easy to implement.
- This composition forms a varnish conductor with a more homogeneous electrical structure than that conductive varnishes based on polyethylene, after polymerization.
- Such a conductive silicone varnish has very poor adhesion to the dielectric of a cable. It includes a primer, such as a silane, facilitating its snap, but still does not present a suitable adhesion to PTFE, while being peelable.
- the present invention aims to make peelable conductive silicone varnish on the dielectric of a cable, so that they have a good grip and that they are in same time easy and quick to eliminate locally and that the resulting cable allows very low level to be obtained desired noise.
- a low noise cable operating temperature of the order of 250 ° C., comprising a conductive core, a dielectric of the PTFE type surrounding said core, a layer of conductive silicone varnish covering said dielectric, conductive shielding surrounding said layer of varnish, and an insulating sheath external protection surrounding said shielding, characterized in that said cable dielectric is said to be treated and under these conditions has a surface tension of so-called adapted value, substantially greater than its typical current value, then directly giving a limited but suitable value of adhesion to said layer silicone varnish on said treated dielectric, for which said layer of silicone varnish is peelable.
- This single figure illustrates by way of example a shielded cable with low noise level according to the invention, operating temperature of around 250 ° c.
- This cable comprises a conductive core 1, a dielectric 2 surrounding the core, a layer of varnish peelable conductor 3 covering the dielectric, shielding metallic and good conductor 4 surrounding the varnish conductor, and an outer insulating sheath 5 covering the shielding and protecting the cable.
- the dielectric is a polytetrafluoroethylene or one of its copolymers.
- the conductive varnish is a silicone varnish, based a polymer, of the polysiloxane type, charged with fines carbon black particles.
- conductive silicone varnish carried out in these conditions is, moreover, preferably thick minimum 50 micrometers, to present resistance mechanical sufficient to the pressure exerted by the wires of the shielding braid covering it. Its resistivity is 1 at 10 ohms.cm at 20 ° c.
- This layer of conductive silicone varnish is then easily separated from the dielectric, by simple peeling the nail or other, where desired, for its elimination local without traces of conductive material remaining this place on the dielectric.
- the cable according to the invention is thus protected from particularly effective against attacks electromagnetic, but also against noise generated in the cable itself or by the circuits electric and / or electronic that it connects, by its shielding and its uniform layer of conductive silicone varnish underlying. It has a noise level of less than 100 microvolts. However, it is free from the risk of short circuits at the level of its connections, such risks being made almost non-existent even for severe conditions temperature and vibration use of said cable, due to the perfect removal of the varnish conductive silicone at these levels and therefore the absence of conductive charges which may come off.
Description
La présente invention porte sur les câbles à faible niveau de bruit, ayant une température de service de l'ordre de 250°c.The present invention relates to cables with low noise level, having an operating temperature of around 250 ° c.
De tels câbles sont des câbles blindés. Ils comportent une âme conductrice recouverte d'un diélectrique PTFE, une couche conductrice disposée sur le diélectrique et recouverte d'un blindage, et une gaine extérieure isolante de protection recouvrant le blindage. La couche conductrice alliée au blindage permet l'obtention d'une protection améliorée, surtout aux basses fréquences, pour laquelle le câble est dit anti-bruit.Such cables are shielded cables. They include a conductive core covered with a PTFE dielectric, a conductive layer disposed on the dielectric and covered with shielding, and an outer insulating sheath of protection covering the shielding. The conductive layer combined with shielding provides protection improved, especially at low frequencies, where the cable is said to be anti-noise.
Ce blindage est en général constitué par une tresse de fils conducteurs, en particulier des fils de cuivre nu, nickelé ou argenté. La couche conductrice est quant à elle constituée par un ruban conducteur ou de préférence par un vernis conducteur, ce dernier conférant au câble une meilleure immunité aux bruits que le ruban.This shielding is generally constituted by a braid of conductive wires, in particular bare copper wires, nickel or silver plated. The conductive layer is consisting of a conductive tape or preferably a conductive varnish, the latter giving the cable a better noise immunity than tape.
Les vernis conducteurs sont des vernis à base d'un polymère PTFE chargé de fines particules conductrices. Ils adhèrent très fortement au diélectrique ; ils ont ainsi une tenue très fiable sur le diélectrique et conduisent au faible niveau de bruit souhaité.Conductive varnishes are varnishes based on a PTFE polymer loaded with fine conductive particles. They adhere very strongly to the dielectric; they have a very reliable hold on the dielectric and lead to low noise level desired.
Ces vernis conducteurs sont cependant difficiles à éliminer localement, ceci sur et au voisinage immédiat des extrémités des câbles équipés de connecteurs. Cette élimination permet d'éviter une possible dégradation du vernis à ce niveau, sous l'effet de vibrations et des frottements, pouvant entraíner un détachement de particules conductrices du vernis et la propagation des particules détachées et alors provoquer un court-circuit entre l'âme et le blindage dans les connecteurs.These conductive varnishes are however difficult to locally eliminate this on and in the immediate vicinity of ends of cables fitted with connectors. This elimination avoids possible degradation of the varnish at this level, under the effect of vibrations and friction, which may cause detachment of particles conductive varnish and the propagation of particles parts and then cause a short circuit between the core and the shielding in the connectors.
Ces vernis conducteurs, à base de PTFE, sont insolubles dans la plupart des solvants usuels. Leur enlèvement local se fait donc essentiellement par voie mécanique, notamment par grattage ou abrasion. Cette opération est longue et peu aisée, mais surtout l'élimination souhaitée n'est qu'imparfaite et peut alors conduire aux risques indiqués ci-avant.These conductive varnishes, based on PTFE, are insoluble in most common solvents. Their local removal is therefore essentially by mechanical, in particular by scraping or abrasion. This operation is long and not easy, but above all the desired elimination is only imperfect and can then lead to the risks indicated above.
Le document DE-A-27 23 488 divulgue un vernis conducteur du type précité, qui est rendu pelable par incorporation d'agents de séparation comportant des silicones dans sa composition de base. Un tel vernis présente alors une bonne adhérence sur le diélectrique d'un câble, tout en étant pelable et donc aisément séparable de ce diélectrique.Document DE-A-27 23 488 discloses a varnish conductor of the aforementioned type, which is peeled off by incorporation of separation agents comprising silicones in its basic composition. Such a varnish then has good adhesion to the dielectric of a cable, while being peelable and therefore easily separable from this dielectric.
On connaít également par le document FR-A-2 464 688 une composition conductrice de protection contre des courants parasites dans des câbles, qui est à base de silicone chargé de fines particules conductrices et est aisée à mettre en oeuvre. Cette composition forme un vernis conducteur de structure électrique plus homogène que celle des vernis conducteurs à base de polyéthylène, après polymérisation. Un tel vernis silicone conducteur présente une très mauvaise adhérence sur le diélectrique d'un câble. Il comporte un primaire, tel qu'un silane, facilitant son accrochage, mais ne présente quand même pas pour autant une adhérence convenable sur du PTFE, tout en étant pelable. We also know from document FR-A-2 464 688 a conductive composition for protection against parasitic currents in cables, which is based on silicone loaded with fine conductive particles and is easy to implement. This composition forms a varnish conductor with a more homogeneous electrical structure than that conductive varnishes based on polyethylene, after polymerization. Such a conductive silicone varnish has very poor adhesion to the dielectric of a cable. It includes a primer, such as a silane, facilitating its snap, but still does not present a suitable adhesion to PTFE, while being peelable.
La présente invention a pour but de rendre pelables des vernis silicone conducteurs sur le diélectrique d'un câble, pour qu'ils aient une bonne adhérence et qu'ils soient en même temps aisés et rapides à éliminer localement et que le câble résultant permette l'obtention du très faible niveau de bruit souhaité.The present invention aims to make peelable conductive silicone varnish on the dielectric of a cable, so that they have a good grip and that they are in same time easy and quick to eliminate locally and that the resulting cable allows very low level to be obtained desired noise.
Elle a pour objet un câble à faible niveau de bruit, de température de service de l'ordre de 250°c, comportant une âme conductrice, un diélectrique du type PTFE entourant ladite âme, une couche de vernis silicone conducteur recouvrant ledit diélectrique, un blindage conducteur entourant ladite couche de vernis, et une gaine isolante externe de protection entourant ledit blindage, caractérisé en ce que ledit diélectrique du câble est dit traité et présente dans ces conditions une tension superficielle de valeur dite adaptée, substantiellement supérieure à sa valeur courante typique, donnant alors directement une valeur limitée mais convenable d'adhérence à ladite couche de vernis silicone sur ledit diélectrique traité, pour laquelle ladite couche de vernis silicone est pelable.Its purpose is a low noise cable, operating temperature of the order of 250 ° C., comprising a conductive core, a dielectric of the PTFE type surrounding said core, a layer of conductive silicone varnish covering said dielectric, conductive shielding surrounding said layer of varnish, and an insulating sheath external protection surrounding said shielding, characterized in that said cable dielectric is said to be treated and under these conditions has a surface tension of so-called adapted value, substantially greater than its typical current value, then directly giving a limited but suitable value of adhesion to said layer silicone varnish on said treated dielectric, for which said layer of silicone varnish is peelable.
Ledit câble présente, en outre, au moins l'une des caractéristiques additionnelles suivantes :
- ledit diélectrique traité est de valeur adaptée de tension superficielle sensiblement de 30 à 40 dynes/cm à une température de l'ordre de 20°c;
- ledit vernis silicone conducteur est à base d'un polymère, de type polysiloxane, chargé de fines particules de noir de carbone;
- said treated dielectric is of suitable value of surface tension substantially from 30 to 40 dynes / cm at a temperature of the order of 20 ° c;
- said conductive silicone varnish is based on a polymer, of the polysiloxane type, charged with fine particles of carbon black;
Cette figure unique illustre à titre d'exemple un câble blindé à faible niveau de bruit selon l'invention, de température de fonctionnement de 250°c environ.This single figure illustrates by way of example a shielded cable with low noise level according to the invention, operating temperature of around 250 ° c.
Ce câble comporte une âme conductrice 1, un
diélectrique 2 entourant l'âme, une couche de vernis
conducteur pelable 3 recouvrant le diélectrique, un blindage
métallique et bon conducteur 4 entourant le vernis
conducteur, et une gaine isolante extérieure 5 recouvrant le
blindage et protégeant le câble.This cable comprises a conductive core 1, a
dielectric 2 surrounding the core, a layer of varnish
peelable conductor 3 covering the dielectric, shielding
metallic and
Le diélectrique est un polytétrafluoréthylène ou l'un de ses copolymères.The dielectric is a polytetrafluoroethylene or one of its copolymers.
Le vernis conducteur est un vernis silicone, à base d'un polymère, de type polysiloxane, chargé de fines particules de noir de carbone.The conductive varnish is a silicone varnish, based a polymer, of the polysiloxane type, charged with fines carbon black particles.
On cite, à titre d'exemple de vernis conducteurs de ce type, les compositions connues par le document FR-A 2484688 et préconisées selon ce document pour la protection de liaisons électriques susceptibles d'être exposées à des rayons X. En particulier une composition de ce type connu est formée des matériaux indiqués, avec leurs proportions, ci-après :
- 100 parties en poids du polymère connu sous la marque "Rhodorsil" déposée par la société Rhône-Poulenc et commercialisé sous la référence RTV 141 A,
- 10 parties en poids de matériau connu sous la précédente marque "Rhodorsil" et commercialisé sous la référence RTV 141 B,
- 15 parties en poids de noir de carbone connu sous la marque "Ketjenblack" déposée par la société Akzo et commercialisé sous la référence EC 300 J,
- 400 parties en poids de toluène pur, servant de solvant pour l'application de la composition sur le diélectrique du câble.
- 100 parts by weight of the polymer known under the brand "Rhodorsil" registered by the company Rhône-Poulenc and marketed under the reference RTV 141 A,
- 10 parts by weight of material known under the previous brand "Rhodorsil" and marketed under the reference RTV 141 B,
- 15 parts by weight of carbon black known under the brand "Ketjenblack" deposited by the company Akzo and marketed under the reference EC 300 J,
- 400 parts by weight of pure toluene, serving as solvent for the application of the composition to the dielectric of the cable.
La forte adhérence naturelle, que présente dans les câbles selon l'art antérieur le vernis conducteur sur le diélectrique PTFE du câble, est réduite à une valeur limitée, selon la présente invention, pour qu'il soit pelable tout en le laissant suffisamment adhérent sur le diélectrique et en ne dégradant sensiblement pas ses caractéristiques électriques.The strong natural adhesion that is present in cables according to the prior art the conductive varnish on the PTFE dielectric of the cable, is reduced to a value limited, according to the present invention, so that it is peelable while leaving it sufficiently adherent on the dielectric and not significantly degrading its Electrical Specifications.
Cette adhérence limitée souhaitée est obtenue sans ajout d'agent à cet effet dans le vernis conducteur, mais d'une part par le choix d'un vernis silicone conducteur, au lieu d'un vernis PTFE conducteur, et d'autre part au moyen d'un traitement de surface du diélectrique 2, qui conduit à une augmentation notable de la tension superficielle de ce diélectrique pour l'application du vernis silicone conducteur sur ce dernier. Par ce traitement, la tension superficielle du diélectrique, de valeur normale typiquement de l'ordre de 20 dynes/cm à 20°c dans les câbles selon l'art antérieur, est portée à une valeur de 30 à 40 dynes/cm à 20°c. En l'absence de ce traitement du diélectrique, l'adhérence du vernis silicone conducteur est quasi-nulle et ne permet pas l'obtention de l'immunité aux bruits souhaitée.This desired limited adhesion is obtained without addition of agent for this purpose in the conductive varnish, but on the one hand by the choice of a conductive silicone varnish, at instead of a conductive PTFE varnish, and secondly by means surface treatment of dielectric 2, which leads to a noticeable increase in the surface tension of this dielectric for applying silicone varnish driver on the latter. By this treatment, the tension superficial dielectric, typically normal of the order of 20 dynes / cm at 20 ° c in cables according to art anterior, is increased to a value of 30 to 40 dynes / cm at 20 ° c. In the absence of this dielectric treatment, the adhesion of the conductive silicone varnish is almost zero and does not provide immunity to noise desired.
Le dépôt de vernis silicone conducteur effectué dans ces conditions est, par ailleurs, de préférence d'épaisseur minimale de 50 micromètres, pour présenter une résistance mécanique suffisante à la pression exercée par les fils de la tresse de blindage le recouvrant. Sa résistivité est de 1 à 10 ohms.cm à 20°c.The deposition of conductive silicone varnish carried out in these conditions is, moreover, preferably thick minimum 50 micrometers, to present resistance mechanical sufficient to the pressure exerted by the wires of the shielding braid covering it. Its resistivity is 1 at 10 ohms.cm at 20 ° c.
Cette couche de vernis silicone conducteur est alors facilement séparée du diélectrique, par simple pelage à l'ongle ou autre, là où souhaité, pour son élimination locale sans qu'il reste de traces de matière conductrice à cet endroit sur le diélectrique.This layer of conductive silicone varnish is then easily separated from the dielectric, by simple peeling the nail or other, where desired, for its elimination local without traces of conductive material remaining this place on the dielectric.
Le câble selon l'invention est ainsi protégé de manière particulièrement efficace contre les agressions électromagnétiques extérieures, mais également contre les bruits générés dans le câble lui-même ou par les circuits électriques et/ou électroniques qu'il raccorde, par son blindage et sa couche uniforme de vernis silicone conducteur sous-jacente. Il est de niveau de bruit inférieur à 100 microvolts. Il est pour autant exempt de risques de court-circuits au niveau de ses connexions, de tels risques étant rendus quasi-inexistants même pour des conditions sévères d'utilisation en température et en vibrations dudit câble, du fait de l'élimination parfaite possible du vernis silicone conducteur à ces niveaux et donc de l'absence de charges conductrices susceptibles de s'y détacher.The cable according to the invention is thus protected from particularly effective against attacks electromagnetic, but also against noise generated in the cable itself or by the circuits electric and / or electronic that it connects, by its shielding and its uniform layer of conductive silicone varnish underlying. It has a noise level of less than 100 microvolts. However, it is free from the risk of short circuits at the level of its connections, such risks being made almost non-existent even for severe conditions temperature and vibration use of said cable, due to the perfect removal of the varnish conductive silicone at these levels and therefore the absence of conductive charges which may come off.
Claims (4)
- A low noise cable, with an operating temperature of the order of 250°C, comprising a conductive core, a dielectric of PTFE type surrounding said core, a conductive silicone coating layer covering said dielectric, a conductive screen surrounding said coating layer, and a protective external insulating sheath surrounding said screening, the cable being characterized in that said dielectric (2) is "treated" and under these conditions has a surface tension of an "adapted" value, substantially greater than its value typically in current use, therefore directly giving said silicone coating layer (3) a limited but appropriate level of adherence to said treated dielectric, in order that said silicone coating layer is peelable.
- A cable according to claim 1, characterized in that said treated dielectric has an adapted surface tension value substantially in the range 30 dynes/cm to 40 dynes/cm at a temperature of the order of 20°C.
- A cable according to either of claims 1 or 2, characterized in that said conductive silicone coating is based on a polysiloxane type of polymer, and is filled with fine particles of carbon black.
- A cable according to either of claims 1 or 2, characterized in that said conductive silicone coating comprises, in parts by weight, substantially 100 parts of the material sold under the name RTV 141 A, 10 parts of the material sold under the name RTV 141 B and 15 parts of fine particles of carbon black.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9210708 | 1992-09-08 | ||
| FR9210708A FR2695508B1 (en) | 1992-09-08 | 1992-09-08 | Low noise cable. |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0587492A1 EP0587492A1 (en) | 1994-03-16 |
| EP0587492B1 true EP0587492B1 (en) | 1998-02-04 |
Family
ID=9433305
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP93402173A Expired - Lifetime EP0587492B1 (en) | 1992-09-08 | 1993-09-07 | Low-noise cable |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US5397855A (en) |
| EP (1) | EP0587492B1 (en) |
| AU (1) | AU4497093A (en) |
| DE (1) | DE69316809T2 (en) |
| FR (1) | FR2695508B1 (en) |
Families Citing this family (39)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6218624B1 (en) * | 1994-07-05 | 2001-04-17 | Belden Wire & Cable Company | Coaxial cable |
| US5561377A (en) * | 1995-04-14 | 1996-10-01 | Cascade Microtech, Inc. | System for evaluating probing networks |
| US5914613A (en) | 1996-08-08 | 1999-06-22 | Cascade Microtech, Inc. | Membrane probing system with local contact scrub |
| US5885710A (en) * | 1997-03-26 | 1999-03-23 | Ericsson, Inc. | Flexible strip transmission line |
| NL1008522C2 (en) * | 1998-03-06 | 1999-09-07 | Beele Eng Bv | Transit device. |
| US6256882B1 (en) | 1998-07-14 | 2001-07-10 | Cascade Microtech, Inc. | Membrane probing system |
| US6445202B1 (en) * | 1999-06-30 | 2002-09-03 | Cascade Microtech, Inc. | Probe station thermal chuck with shielding for capacitive current |
| US6912076B2 (en) * | 2000-03-17 | 2005-06-28 | Accu-Sort Systems, Inc. | Coplanar camera scanning system |
| KR20010034998A (en) * | 2000-07-19 | 2001-05-07 | 정동은 | The non-heat luminous cable with a kitting and braiding epidermis layer |
| US6914423B2 (en) | 2000-09-05 | 2005-07-05 | Cascade Microtech, Inc. | Probe station |
| US6965226B2 (en) | 2000-09-05 | 2005-11-15 | Cascade Microtech, Inc. | Chuck for holding a device under test |
| DE10143173A1 (en) | 2000-12-04 | 2002-06-06 | Cascade Microtech Inc | Wafer probe has contact finger array with impedance matching network suitable for wide band |
| AU2002327490A1 (en) | 2001-08-21 | 2003-06-30 | Cascade Microtech, Inc. | Membrane probing system |
| US6836135B2 (en) * | 2001-08-31 | 2004-12-28 | Cascade Microtech, Inc. | Optical testing device |
| US6780360B2 (en) | 2001-11-21 | 2004-08-24 | Times Microwave Systems | Method of forming a PTFE insulation layer over a metallic conductor and product derived thereform |
| US7352258B2 (en) * | 2002-03-28 | 2008-04-01 | Cascade Microtech, Inc. | Waveguide adapter for probe assembly having a detachable bias tee |
| US6847219B1 (en) * | 2002-11-08 | 2005-01-25 | Cascade Microtech, Inc. | Probe station with low noise characteristics |
| US7250779B2 (en) * | 2002-11-25 | 2007-07-31 | Cascade Microtech, Inc. | Probe station with low inductance path |
| US7221172B2 (en) * | 2003-05-06 | 2007-05-22 | Cascade Microtech, Inc. | Switched suspended conductor and connection |
| US7057404B2 (en) | 2003-05-23 | 2006-06-06 | Sharp Laboratories Of America, Inc. | Shielded probe for testing a device under test |
| US7492172B2 (en) | 2003-05-23 | 2009-02-17 | Cascade Microtech, Inc. | Chuck for holding a device under test |
| US20050011664A1 (en) * | 2003-07-16 | 2005-01-20 | Chang-Chi Lee | Structure of a cable |
| US7250626B2 (en) | 2003-10-22 | 2007-07-31 | Cascade Microtech, Inc. | Probe testing structure |
| US7187188B2 (en) * | 2003-12-24 | 2007-03-06 | Cascade Microtech, Inc. | Chuck with integrated wafer support |
| US7427868B2 (en) | 2003-12-24 | 2008-09-23 | Cascade Microtech, Inc. | Active wafer probe |
| WO2005121824A2 (en) * | 2004-06-07 | 2005-12-22 | Cascade Microtech, Inc. | Thermal optical chuck |
| US7330041B2 (en) * | 2004-06-14 | 2008-02-12 | Cascade Microtech, Inc. | Localizing a temperature of a device for testing |
| US7420381B2 (en) | 2004-09-13 | 2008-09-02 | Cascade Microtech, Inc. | Double sided probing structures |
| US7535247B2 (en) | 2005-01-31 | 2009-05-19 | Cascade Microtech, Inc. | Interface for testing semiconductors |
| US7656172B2 (en) | 2005-01-31 | 2010-02-02 | Cascade Microtech, Inc. | System for testing semiconductors |
| US7403028B2 (en) | 2006-06-12 | 2008-07-22 | Cascade Microtech, Inc. | Test structure and probe for differential signals |
| US7764072B2 (en) | 2006-06-12 | 2010-07-27 | Cascade Microtech, Inc. | Differential signal probing system |
| US7723999B2 (en) | 2006-06-12 | 2010-05-25 | Cascade Microtech, Inc. | Calibration structures for differential signal probing |
| US7876114B2 (en) | 2007-08-08 | 2011-01-25 | Cascade Microtech, Inc. | Differential waveguide probe |
| US7888957B2 (en) | 2008-10-06 | 2011-02-15 | Cascade Microtech, Inc. | Probing apparatus with impedance optimized interface |
| US8410806B2 (en) | 2008-11-21 | 2013-04-02 | Cascade Microtech, Inc. | Replaceable coupon for a probing apparatus |
| US8319503B2 (en) * | 2008-11-24 | 2012-11-27 | Cascade Microtech, Inc. | Test apparatus for measuring a characteristic of a device under test |
| US8426734B2 (en) | 2010-06-28 | 2013-04-23 | Ametek, Inc. | Low noise ECG cable and electrical assembly |
| CN109712741A (en) * | 2018-11-20 | 2019-05-03 | 安徽宏源特种电缆股份有限公司 | A kind of high temperature resistant watertight cable and production method |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2051268B2 (en) * | 1970-06-13 | 1972-09-14 | Sumitomo Electric Industries Ltd., Osaka (Japan) | INSULATED CABLE |
| DE2723488C3 (en) * | 1977-05-21 | 1983-12-29 | AEG-Telefunken Kabelwerke AG, Rheydt, 4050 Mönchengladbach | Electrical cable with plastic insulation and outer conductive layer |
| FR2484688A1 (en) * | 1980-06-13 | 1981-12-18 | France Etat | CONDUCTIVE COMPOSITION FOR PROTECTION AGAINST INTERFERENCE CURRENTS AND METHODS AND APPARATUS THEREOF |
| US4565594A (en) * | 1983-10-28 | 1986-01-21 | Thermax Wire Corporation | Low noise cable construction |
| GB8703101D0 (en) * | 1987-02-11 | 1987-03-18 | Secr Defence | Gas turbine engine combustion chambers |
| DK89087A (en) * | 1987-02-20 | 1988-08-21 | Nordiske Kabel Traad | METHOD FOR MANUFACTURING AN ELECTRIC SEMI-CONDUCTIVE, STRIPABLE PLASTIC BLENDER |
| JPH01239710A (en) * | 1988-03-18 | 1989-09-25 | Tatsuta Electric Wire & Cable Co Ltd | Resin compound for external semiconductive layer of power cable |
| GB2229313A (en) * | 1989-03-17 | 1990-09-19 | Vactite Ltd | Screened electric conductors having metal braid embedded in semi conductive plastics |
| US5214243A (en) * | 1991-10-11 | 1993-05-25 | Endevco Corporation | High-temperature, low-noise coaxial cable assembly with high strength reinforcement braid |
-
1992
- 1992-09-08 FR FR9210708A patent/FR2695508B1/en not_active Expired - Fee Related
-
1993
- 1993-08-31 AU AU44970/93A patent/AU4497093A/en not_active Abandoned
- 1993-09-07 EP EP93402173A patent/EP0587492B1/en not_active Expired - Lifetime
- 1993-09-07 DE DE69316809T patent/DE69316809T2/en not_active Expired - Fee Related
- 1993-09-08 US US08/117,710 patent/US5397855A/en not_active Expired - Fee Related
Non-Patent Citations (1)
| Title |
|---|
| Matières Plastiques -I- Chimie-applications (2e édition) de Jean Bost, publié aux éditions Lavoisier- Technique et Documentation, pages 316 à 319 * |
Also Published As
| Publication number | Publication date |
|---|---|
| US5397855A (en) | 1995-03-14 |
| EP0587492A1 (en) | 1994-03-16 |
| AU4497093A (en) | 1994-03-17 |
| FR2695508A1 (en) | 1994-03-11 |
| FR2695508B1 (en) | 1994-10-21 |
| DE69316809D1 (en) | 1998-03-12 |
| DE69316809T2 (en) | 1998-05-20 |
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