EP0572847B1 - Münzdetektor - Google Patents
Münzdetektor Download PDFInfo
- Publication number
- EP0572847B1 EP0572847B1 EP93107938A EP93107938A EP0572847B1 EP 0572847 B1 EP0572847 B1 EP 0572847B1 EP 93107938 A EP93107938 A EP 93107938A EP 93107938 A EP93107938 A EP 93107938A EP 0572847 B1 EP0572847 B1 EP 0572847B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- coin
- circuit
- detector
- coil
- way
- 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
Links
Images
Classifications
-
- G—PHYSICS
- G07—CHECKING-DEVICES
- G07D—HANDLING OF COINS OR VALUABLE PAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING, DISPENSING, CHANGING OR DEPOSITING
- G07D5/00—Testing specially adapted to determine the identity or genuineness of coins, e.g. for segregating coins which are unacceptable or alien to a currency
- G07D5/08—Testing the magnetic or electric properties
-
- G—PHYSICS
- G07—CHECKING-DEVICES
- G07D—HANDLING OF COINS OR VALUABLE PAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING, DISPENSING, CHANGING OR DEPOSITING
- G07D5/00—Testing specially adapted to determine the identity or genuineness of coins, e.g. for segregating coins which are unacceptable or alien to a currency
- G07D5/02—Testing the dimensions, e.g. thickness, diameter; Testing the deformation
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49002—Electrical device making
- Y10T29/4902—Electromagnet, transformer or inductor
Definitions
- the invention relates to an inductive coin detector and a method for its manufacture which in the preamble of Claim 1 mentioned type.
- Such inductive coin detectors are suitable for example for the identification of coins at coin validators.
- An inductive coin detector in the preamble of claim 1 mentioned type is known from GB-A 2'151'062.
- the coin detector consists of a flat coil in a circuit High frequency oscillator.
- One emerging from the spool alternating magnetic field penetrates a coin channel vertically.
- a coin rolling through the alternating field in the coin channel is changed the resonance frequency of the oscillator through interaction of the Coin with the alternating field.
- the presence of the coin The resulting frequency deviation serves as a measure of the measuring parameters, such as B. diameter, alloy, General presence etc.
- the coil is wound from wire or on a printed circuit board by etching a copper lamination produced.
- the rest of the part of the The high-frequency oscillator is shielded against interference Supply lines connected to the coil.
- FR-A 1 532 020 discloses flat, spiral-shaped conductor arrangements on a rigid circuit board as part of a known inductive coin acceptor, the circuit board with the spiral conductor arrangements on the coin channel is arranged and forms part of the coin channel.
- the coin validator from US-A 4 441 602 has been arranged in pairs two spiral transmission and reception coils each rigid printed circuit boards, with a first of a transmission and receiving coils formed a coin channel and a pair second pair include a reference coin.
- On the Printed circuit boards are also the electronic components of the transmission or receiving circuit arranged.
- One the coin channel passing unknown coin weakens to characteristic Way the coupling between the transmitter and the receiver coil of the first couple. Is the extent of the weakening by Coin equal to the weakening of the coil pair with the Reference coin, the coin is in the coin channel as one assumed to be identified.
- the invention has for its object a low-interference, to create inexpensive inductive coin detector that is simple can be installed and arranged in the coin validator.
- the invention consists in the features specified in claim 1. Advantageous configurations result from the dependent ones Claims.
- 1 means a coin channel in a coin validator, 2 a coin, 3 a coil, 4 a detector circuit, 5 a Power supply unit and 6 an evaluation unit.
- the feed device 6 is used the power supply and is via feed lines 7 with the Detector circuit 4 and via supply lines 8 with the Evaluation unit 6 connected.
- a signal line 9 extends from the detector circuit 4 to the evaluation unit 6 for transmission of measurement signals.
- the evaluation unit 6 analyzes predetermined way the measurement signals and can over a Command line 10 release a service.
- the coin acceptor is z. B. in a public telephone or in a vending machine installed and enables the service to be triggered using coins 2.
- the coin validator comprises at least one inductive coin detector, which is formed from the coil 3 and the detector circuit 4 and as a scanning element on the coin channel 1 for measuring a predetermined one Size of coin 2, like diameter of coin 2, type of coin alloy etc., or to check the presence of coin 2 in Coin channel 1 is used.
- the coil 3 has at least one flat spiral conductor arrangement 11 on, so that the coil 3 as space-saving as possible Coin channel 1 can be arranged.
- An alternating current in the Conductor arrangement 11 of the coil 3 generates an alternating magnetic field, that in the direction of the coil axis 12 ( Figure 2) the coin channel 1 perpendicular to a running direction 13 of the coin 2 penetrates, for example such that the coil axis 12 also parallel to the axis of the moving past the coil 3 Coin 2 is aligned.
- the coil 3 (FIG. 1) has two on both sides an insulating film 14 coaxially aligned flat spiral conductor arrangements 11 and 11 ', which by means of a Via 16 through the center 15 of the coil 3 are electrically connectable to each other.
- the dashed drawn coil axis 12 is perpendicular to the plane of the conductor arrangement 11 or 11 'and pierces the center 15.
- Each electrical conductor material is for the conductor arrangement 11, 11 ' usable, but copper is particularly inexpensive.
- both conductor arrangements 11 and 11 ' can with the Plated-through hole 16 to form a flat two-layer coil 3 are interconnected, the windings of the conductor arrangements 11th and 11 '.
- both conductor arrangements 11 and 11 ' have the same winding sense on.
- Detector circuit 4 arranged outside of the conductor arrangement 11 .
- the detector circuit 4 has connection areas for contacting the connections 20 to the Connection lugs 21 for the feed lines 7 ( Figure 1) and Signal line 9 ( Figure 1) are connected.
- the coil 3 can also be used to achieve a smaller inductance be made in one layer.
- the insulating film 14 can only on the one side carry the conductor arrangement 11 or it is only that a conductor arrangement 11 or 11 'connected, the Via 16 is missing.
- the coin detector is advantageous in housed a flat housing 22.
- the Both flat sides 23, 23 'of the housing 22 are from the coil axis 12 pierce vertically.
- the coin detectors are manufactured inexpensively one behind the other on a ribbon-shaped insulating film 14, whereby the arrangement of the coil 3, the detector circuit 4, the Terminal lugs 21 and the housing 22, 22 'in a register distance A repeated along the insulating film 14.
- the detector circuit 4 is glued to a substrate 24 made of conductor material and, as shown in FIG. 3, comprises an oscillator circuit 25 and a measuring circuit 26.
- the oscillator circuit 25 in connection with the coil 3 (FIG. 1) forms an LC oscillator with the Coil 3 as an inductor. Examples of such LC oscillators are described in the book "Semiconductor Circuit Technology" by U. Tietze and Ch. Schenk, Springer-Verlag Berlin, 1978, ISBN 3-540-08628-5, pages 419 to 430, 4th edition.
- the alternating current generated by the oscillator circuit 25 in the coil 3 effects the alternating magnetic field of the coin detector in the coin channel 1 (FIG. 1). Without a coin 2 (FIG.
- the LC oscillator oscillates at a predetermined idle frequency f 0 .
- the frequency f of the LC oscillator changes.
- the LC oscillator of the coin detector begins to oscillate, the inductance of the coil 3 and a capacitor of the oscillator circuit 25 connected in parallel with the coil 3 determining the frequency f 0 . Since the coil 3 and the capacitor in the oscillator circuit 25 can be manufactured with very narrow tolerances, the idle frequency f 0 scatters in a narrow band, so that there is no need to tune the LC oscillator to the predetermined idle frequency f 0 .
- the coil 3 has an inductance of between 0.5 ⁇ H and 50 ⁇ H.
- the two-layer coil 3 with a predetermined diameter of 14 mm of both conductor arrangements 11, 11 ' has an inductance of 2920 nH with a total of 20 turns.
- the single-layer coil 3 with the one conductor arrangement 11 of the same diameter and 10 turns has only a quarter of the inductance, ie 730 nH.
- the coils 3 have a quality factor Q in the range from 5 to 10.
- Idle frequencies f 0 suitable for the coin detector are in the range from 1 MHz to 20 MHz.
- the coin detector has the advantage that because of the short Bridges 19, 19 'between the oscillator circuit 25 and the Coil 3 is a low-interference and because of the automatable Manufacturing also an inexpensive construction of the LC oscillator is possible. Despite the high frequencies f of the LC oscillator radiate the feed lines 7 and the signal line 9 none interfering electromagnetic waves that affect the function of the Coin validators and also affect the LC oscillator would burden.
- the compact coin detector is easy in the coin validator to be arranged on coin channel 1 and is characterized by a low power consumption.
- the coin detector can also be used generally as a sensor an approximation of a piece of metal with the alternating field of the Coil 3 detects.
- the oscillator circuit 25 and the measuring circuit 26 can be implemented on a Si wafer chip in CMOS technology. This measure lowers the current consumption of the detector circuit 4 to less than 30 ⁇ A at a supply voltage of 5 V when the LCO oscillator with the single-layer coil 3 oscillates at the idle frequency f 0 of approximately 16 MHz.
- the insulating film 14 has the conductor arrangement on at least one side 11 and 11 ', the connection tabs 21 and the substrate 24 on.
- These conductor pieces 11, 17, 21 and 24 or 11, 11 ', 17, 18, 21 and 24 made of an electrical conductor material can in a printing process or by vapor deposition or deposition can be applied to the insulating film 14 on both sides.
- the conductor pieces 11, 17, 21 and 24 or 11, 11 ', 17, 18, 21 and 24 from the one or both sides etched on the insulating film 14 laminated conductor material are.
- the electrical conductor material has a thickness of 0.01 mm up to 0.15 mm or more. The thicker conductor material causes an advantageous rigidity of the connecting lugs 21.
- a tape 27 of a commercially available KAPTON (R) film 70 ⁇ m thick with a one- or both-sided layer of 17 ⁇ m copper can be used as the flexible insulating film 14.
- the coil 3 is part of the "lead frame" together with the Substrate 24 and the connecting lugs 21 generated from the tape 27.
- the advantage of this procedure is its suitability for automatable production of the coin detector as all Connections 16, 19, 19 ', 20 on the carrier sheet 30 by means of Bonding of thin wires can be carried out inexpensively if the Detector circuit 4 is integrated on a semiconductor chip and the frequency-determining capacitor of the oscillator circuit 25 arranged as a separate component 25 'on the substrate 24 and is directly connected to the coil connections 17, 18.
- the coin detector can be compared between method steps f) and g), the value of the idle frequency f o measured at the LC oscillator being stored in the measuring circuit 26 for the calculation of the frequency deviation ⁇ f.
- the manufacturing process can be for two-layer coils 3 be modified that first the conductor arrangements 11 on the one-sided laminated band 27 after the manufacturing steps a) to d) are generated. Then the conductor-free pages two identical tapes 27 treated in this way on the Positioning holes 29, 29 'aligned with a composite strip joined together, the conductor arrangements 11 on both sides of the composite strip also coaxially and in the same direction are arranged.
- the composite strip is used in the following Manufacturing steps e) to h) like a double-sided laminated Volume 27 processed further.
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Testing Of Coins (AREA)
- Pinball Game Machines (AREA)
- Noodles (AREA)
- Eye Examination Apparatus (AREA)
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
Description
- Figur 1
- einen Münzprüfer mit einem Münzdetektor,
- Figur 2
- den Münzdetektor im Querschnitt und
- Figur 3
- einen Ausschnitt aus einem bestückten Band.
Claims (12)
- Münzdetektor zum induktiven Abtasten von sich in einem Münzkanal (1) bewegenden Münzen (2) mittels eines hochfrequenten elektromagnetischen Wechselfelds, mit einer LC-Oszillatorschaltung (25) zum Erzeugen des hochfrequenten Wechselfeldes, wobei die induktive Komponente der LC-Oszillatorschaltung (25) von einer elektrischen Spule (3) gebildet ist, die als flache spiralförmige Leiteranordnung (11, 11') auf einem band- oder plättchenförmigen Träger angeordnet ist und zur Erzeugung eines im Münzkanal (1) im wesentlichen senkrecht zur Münzlaufrichtung (13) verlaufenden Wechselfeldes dient, wobei weitere Komponenten der LC-Oszillatorschaltung (25) auf dem Träger angeordnet und mit der Spule (3) verbunden sind, und mit einer Auswerteschaltung (6),
dadurch gekennzeichnet,daß der Träger als Isolierfolie (14) ausgebildet ist, daß die Isolierfolie (14) als Träger nicht nur für die LC-Oszillatorschaltung (25), sondern auch für eine Meßschaltung (26) dient,daß die LC-Oszillatorschaltung (25) mit der Meßschaltung (26) eine Detektorschaltung (4) für die Münzen (2) bildet, daß die LC-Oszillatorschaltung (25) über kurze Verbindungsbrücken (19, 19') mit der spiralförmigen Leiteranordnung (11, 11') verbunden ist,daß die Detektorschaltung (4) ein von der Frequenzabweichung (δf) zwischen der Leerlauffrequenz (fo) und der von der Belastung des elektromagnetischen Wechselfeldes abhängigen Frequenz (f) der LC-Oszillatorschaltung (25) abhängiges Signal zur Ansteuerung der Auswerteschaltung (6) erzeugt, unddaß die Detektorschaltung (4) zur Energieversorgung über Speiseleitungen (7) mit einem Speisegerät (5) des Münzprüfers und zur Signalübermittlung über eine Signalleitung (9) mit einer Erkennungsschaltung (6) des Münzprüfers verbunden ist. - Münzdetektor nach Anspruch 1,
dadurch gekennzeichnet,
daß die Oszillatorschaltung (25) und/oder die Meßschaltung (26) in CMOS-Technologie auf einem Halbleiterchip integriert sind. - Münzdetektor nach Anspruch 1 oder 2,
dadurch gekennzeichnet,
daß der frequenzbestimmende Kondensator der LC-Oszillatorschaltung (25) als getrenntes Bauelement auf einem Substrat (24) angeordnet und direkt mit elektrischen Anschlüssen der spiralförmigen Leiteranordnung (11, 11') verbunden ist. - Münzdetektor nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet,
daß in der Meßschaltung (26) eine Einrichtung zum Speichern der Leerlauffrequenz (fo) des LC-Oszillators angeordnet ist. - Münzdetektor nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet,
daß die Detektorschaltung (4) mit Kunststoff umspritzt oder umpreßt ist und ein flaches Gehäuse (22) bildet, dessen Flachseiten (23, 23') parallel zur Ebene der spiralförmigen Leiteranordnung (11, 11') ausgerichtet sind. - Münzdetektor nach Anspruch 5,
dadurch gekennzeichnet,
daß aus dem Gehäuse (22) wenigstens drei Anschlußelemente (21) hinausgeführt sind, von denen zwei Anschlußelemente (21) über Speiseleitungen (7) die Verbindung der Detektorschaltung (4) mit einer elektrischen Speisespannungsquelle (5) und mindestens ein Anschlußelement (21) die Verbindung der Detektorschaltung (4) zur Auswerteschaltung (6) über eine Signalleitung (9) herstellen. - Münzdetektor nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet,
daß die Isolierfolie (14) ein biegbares Band (27) aus Polyimid ist. - Verfahren zur Herstellung eines induktiven Münzdetektors mit einer Detektorschaltung (4), die auf einem Trägerblatt (30) eine LC-Oszillatorschaltung (25) mit einer Spule (3) aus einer spiralförmigen Leiteranordnung (11, 11'; 16) und eine Meßschaltung (26) aufweist, mit folgenden Verfahrensschritten:a) Stanzen von Positionierlöchern (29; 29') in ein einseitig oder zweiseitig mit Leitermaterial kaschiertes Band (27) aus einer insbesondere flexiblen Isolierfolie (14) in vorbestimmten Abständen (A) in Randzonen (28; 28') und Freistanzen des Trägerblattes (30) aus dem Band (27), wobei das Trägerblatt (30) über schmale Stege (31) mit den Randzonen (28; 28') und mit die Randzonen (28; 28') verbindenden Querstege (32) verbunden bleibt,b) Abdecken von Leiterteilen (11; 11'; 17; 18; 21; 22; 24) im Register der Positionierlöcher (29; 29') mittels auf dem Leitermaterial angeordneter Ätzmasken (33),c) Wegätzen des freiliegenden überflüssigen Leitermaterials,d) Entfernen der Ätzmasken (33),e) Befestigen eines Substrats (24) mit der Detektorschaltung (4) im Register der Positionierlöcher (29; 29') auf dem Trägerblatt (30) und Anschließen der Detektorschaltung (4) über elektrische Verbindungen (20) an fahnenförmige Anschlußelemente (21) und über Brücken (19, 19') an die spiralförmige Leiteranordnung (11, 11'; 16),f) Umpressen oder Umspritzen des derart bestückten Trägerblatts (30) mit Kunststoff zur Bildung eines flachen Gehäuses (22; 22'), dessen Flachseiten (23; 23') parallel zur Ebene der Leiteranordnung (11, 11') ausgerichtet sind, undg) Durchtrennen verbleibender Stege (31) und Freischneiden der Anschlußelemente (21).
- Verfahren zur Herstellung eines induktiven Münzdetektors mit einem einseitig mit Leitermaterial kaschiertem Band aus einer insbesondere flexiblen Isolierfolie nach Anspruch 8,
dadurch gekennzeichnet,
daß die Detektorschaltung (4) über elektrische Verbindungen (20) an fahnenförmige Anschlußelemente (21) und über Brücken (19, 19') an einen Spulenanschluß (17, 18) und an das Zentrum (15) der spiralförmigen Leiteranordnung (11, 11') angeschlossen werden. - Verfahren zur Herstellung eines induktiven Münzdetektors mit einem zweiseitig mit Leitermaterial kaschiertem Band aus einer insb. flexiblen Isolierfolie nach Anspruch 8,
dadurch gekennzeichnet,
daß die Detektorschaltung (4) über elektrische Verbindungen (20) an fahnenförmige Anschlußelemente (21) und über Brücken (19, 19') an Spulenanschlüsse (17, 18) der spiralförmigen Leiteranordnung (11, 11'; 16) angeschlossen werden, wobei der eine Teil der spiralförmigen Leiteranordnung (11) mit dem weiteren Teil der spiralförmigen Leiteranordnung (11') mittels einer Durchkontaktierung (16) im Zentrum (15) beider spiralförmiger Leiteranordnungen (11, 11') verbunden wird. - Verfahren nach einem der Ansprüche 8 - 10,
dadurch gekennzeichnet,
daß in einem weiteren Verfahrensschritt der Münzdetektor mit elektrischer Energie versorgt und die Leerlauffrequenz (f0) der LC-Oszillatorschaltung (25) abgeglichen wird. - Verwendung des Münzdetektors nach einem der Ansprüche 1 - 7 als Sensor zum Feststellen der Annäherung eines Metallstücks.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH178292 | 1992-06-03 | ||
CH1782/92 | 1992-06-06 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0572847A1 EP0572847A1 (de) | 1993-12-08 |
EP0572847B1 true EP0572847B1 (de) | 1998-08-26 |
Family
ID=4218484
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP93107938A Expired - Lifetime EP0572847B1 (de) | 1992-06-03 | 1993-05-15 | Münzdetektor |
Country Status (6)
Country | Link |
---|---|
US (2) | US5411126A (de) |
EP (1) | EP0572847B1 (de) |
KR (1) | KR0165135B1 (de) |
AT (1) | ATE170312T1 (de) |
DE (1) | DE59308911D1 (de) |
DK (1) | DK0572847T3 (de) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19781532B4 (de) * | 1996-01-11 | 2008-01-17 | De La Rue Cash Systems, Inc., Watertown | Münzhandhabungsmaschine mit kreisförmiger Sortierplatte und Münzerkennung |
DE69713510T2 (de) | 1996-07-29 | 2002-10-24 | Qvex, Inc. | Vorrichtung und verfahren zum prüfen von münzen |
US6896826B2 (en) * | 1997-01-09 | 2005-05-24 | Advanced Technology Materials, Inc. | Aqueous cleaning composition containing copper-specific corrosion inhibitor for cleaning inorganic residues on semiconductor substrate |
GB2331614A (en) | 1997-11-19 | 1999-05-26 | Tetrel Ltd | Inductive coin validation system |
DE10066293B4 (de) | 2000-09-29 | 2007-11-29 | Balluff Gmbh | Induktiver Sensor |
JP2004227133A (ja) * | 2003-01-21 | 2004-08-12 | Internatl Currency Technologies Corp | 硬貨受け取り器の検出装置 |
TWI227502B (en) | 2003-09-02 | 2005-02-01 | Ind Tech Res Inst | Precise multi-pole magnetic components and manufacturing method thereof |
JP5924686B2 (ja) * | 2012-09-28 | 2016-05-25 | 株式会社日本コンラックス | 硬貨処理装置 |
JP6992445B2 (ja) * | 2017-11-27 | 2022-01-13 | 富士電機株式会社 | 硬貨検知用アンテナおよび硬貨処理装置 |
CN112406318B (zh) * | 2020-11-24 | 2023-07-21 | 武汉先同科技有限公司 | 一种基于电感技术的墨量检测装置、方法及喷墨打印机 |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3185947A (en) * | 1959-11-16 | 1965-05-25 | Arf Products | Inductive module for electronic devices |
FR1532020A (fr) * | 1967-07-21 | 1968-07-05 | Scheidt & Bachmann Gmbh | Dispositif de vérification et de comptage de pièces de monnaie dans des distributeurs automatiques |
US3576244A (en) * | 1969-01-08 | 1971-04-27 | Vendo Co | Coin acceptor having resistivity and permeability detector |
US3901368A (en) * | 1974-03-11 | 1975-08-26 | Lance T Klinger | Coin acceptor/rejector |
US4035695A (en) * | 1974-08-05 | 1977-07-12 | Motorola, Inc. | Microelectronic variable inductor |
US4353453A (en) * | 1980-04-10 | 1982-10-12 | Atn Research & Development Corporation | Valid coin acceptor for coin actuated apparatus |
US4441602A (en) * | 1981-12-02 | 1984-04-10 | Joseph Ostroski | Electronic coin verification mechanism |
US4494100A (en) * | 1982-07-12 | 1985-01-15 | Motorola, Inc. | Planar inductors |
US4574936A (en) * | 1983-05-10 | 1986-03-11 | Lance Klinger | Coin accepter/rejector including symmetrical dual feedback oscillator |
EP0308996A3 (de) * | 1983-11-04 | 1989-05-17 | Mars Incorporated | Münzprüfer |
US4678994A (en) * | 1984-06-27 | 1987-07-07 | Digital Products Corporation | Methods and apparatus employing apparent resonant properties of thin conducting materials |
GB8509609D0 (en) * | 1985-04-15 | 1985-05-22 | Coin Controls | Discriminating between different metallic articles |
JPH0744405Y2 (ja) * | 1989-03-07 | 1995-10-11 | ローム株式会社 | プリント基板の切断装置 |
EP0500367A3 (en) * | 1991-02-20 | 1993-07-21 | Telkor (Proprietary) Limited | Coil arrangement and static measuring device |
US5133118A (en) * | 1991-08-06 | 1992-07-28 | Sheldahl, Inc. | Surface mounted components on flex circuits |
-
1993
- 1993-05-15 EP EP93107938A patent/EP0572847B1/de not_active Expired - Lifetime
- 1993-05-15 AT AT93107938T patent/ATE170312T1/de not_active IP Right Cessation
- 1993-05-15 DK DK93107938T patent/DK0572847T3/da active
- 1993-05-15 DE DE59308911T patent/DE59308911D1/de not_active Expired - Fee Related
- 1993-05-17 US US08/072,913 patent/US5411126A/en not_active Expired - Fee Related
- 1993-06-01 KR KR1019930009794A patent/KR0165135B1/ko not_active IP Right Cessation
-
1995
- 1995-03-24 US US08/410,066 patent/US5575057A/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
DE59308911D1 (de) | 1998-10-01 |
EP0572847A1 (de) | 1993-12-08 |
ATE170312T1 (de) | 1998-09-15 |
DK0572847T3 (da) | 1999-05-25 |
US5575057A (en) | 1996-11-19 |
KR0165135B1 (ko) | 1999-03-20 |
KR940001014A (ko) | 1994-01-10 |
US5411126A (en) | 1995-05-02 |
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