EP0543231A1 - Ferrite core for vertical deflection of electron beams - Google Patents

Ferrite core for vertical deflection of electron beams Download PDF

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Publication number
EP0543231A1
EP0543231A1 EP92119021A EP92119021A EP0543231A1 EP 0543231 A1 EP0543231 A1 EP 0543231A1 EP 92119021 A EP92119021 A EP 92119021A EP 92119021 A EP92119021 A EP 92119021A EP 0543231 A1 EP0543231 A1 EP 0543231A1
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EP
European Patent Office
Prior art keywords
ferrite core
wire guide
core halves
guide rings
acrylates
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.)
Granted
Application number
EP92119021A
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German (de)
French (fr)
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EP0543231B1 (en
Inventor
Siegfried Ast
Johann Dipl.-Ing. Lang
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nokia Technology GmbH
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Nokia Technology GmbH
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Publication of EP0543231A1 publication Critical patent/EP0543231A1/en
Application granted granted Critical
Publication of EP0543231B1 publication Critical patent/EP0543231B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
    • H01J9/236—Manufacture of magnetic deflecting devices for cathode-ray tubes

Definitions

  • the invention is concerned with ferrite core halves for the vertical deflection of electron beams in picture tubes, in particular with the attachment of wire guide rings on the ferrite core halves.
  • wire guide rings which serve as stops or deflection points due to their shape when winding vertical deflection coils, are firmly connected to at least one edge of the respective ferrite core half.
  • This connection is usually designed as an adhesive connection.
  • connection of the ferrite core half and the wire guide ring is designed as a solvent diffusion bond.
  • These Connection ensures good adhesion of the wire guide ring to the ferrite core half.
  • the solvent contains trichlorethylene. The health hazards that can arise from trichlorethylene, as well as the high expenditure on equipment associated with the use of trichlorethylene, need not be dealt with separately here.
  • wire guide rings and ferrite core halves could also be carried out using two-component adhesives.
  • These adhesives which are known per se, are, on the one hand, very expensive and very complex to process. In this context, it should only be pointed out that when using two-component adhesives, immense amounts of solvents are required to prevent the adhesive nozzle from sticking.
  • Cyanoacrylates as adhesives for connecting wire guide rings to ferrite cores are also known.
  • the use of these adhesives requires very tight tolerances between the ferrite core and the wire guide ring if fast-curing mixtures of this adhesive are used.
  • cyanoacrylate adhesives are usually used which are more viscous in their consistency and therefore harden more slowly.
  • the invention is therefore based on the object of specifying a connection of wire guide rings with ferrite core halves which does not require compliance with close tolerances between the wire guide ring and ferrite core, is physiologically harmless and permits extremely short curing times.
  • the adhesive which connects the ferrite core halves and the wire guide rings to one another is a UV-curing adhesive, and in that the wire guide rings are formed from plastic which is transparent to ultraviolet light.
  • the adhesive In order to achieve a very good connection between the wire guide ring and the ferrite core half, the adhesive, based on the finished adhesive mixture, must have a weight percentage of 5 to 45 percent of other acrylates in addition to the base material urethane acrylate with a weight percentage between 30 and 50 percent. If these other acrylates are hydroxypropyl acrylate, isobornyl acrylate and methacrylate esters and these other acrylates each have a weight percentage of 5 to 15 percent based on the finished adhesive mixture, very good strength of the connection between wire guide rings and ferrite core halves can be achieved even during fast cycle times during curing. Even with large tolerances of up to 500 ⁇ m, optimum connection strength and curing time are achieved when the percentage by weight of the other acrylates is the same in relation to the finished adhesive mixture.
  • the wire guide rings 3 are glued to the ferrite core halves 1, as shown in FIG. 2.
  • the adhesive seam 5 is formed by a UV-curing adhesive, the composition of which is illustrated in more detail in the two tables below: Table 1 Weight percent in the finished adhesive mixture designation Manufacturer 50 Urethane acrylate, 295 UCB Belgium 10th Hydroxypropyl acrylate Röhm company, Darmstadt 10th Isobornyl acrylate Röhm Darmstadt company 10th Methacrylic ester 13.0 Röhm company, Darmstadt 1 Aerosil 200 Degussa 10th Methacrylic acid Merck 5 organic silane GF 70 Wacker chemistry 3rd Photoinitiator commercially available Merck Weight percent in the finished adhesive mixture designation Manufacturer 44 Urethane acrylate, 295 UCB Belgium 10th Hydroxypropyl acrylate Röhm company, Darmstadt 12th Isobornyl acrylate Röhm Darmstadt company 14 Methacrylic ester 13.0 Röhm company, Darm
  • the proportion of the other acrylates (hydroxypropyl acrylate, isobornyl acrylate and methacrylate ester) is contained in the finished adhesive mixture with approximately the same proportion. Compliance with this ratio between the other acrylates means that the adhesion of the wire guide rings 3 to the ferrite core halves 1 is particularly good. Even wire guide rings 3 and ferrite core halves 1, between which there are tolerances of up to 500 ⁇ m, are to be glued together.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Adhesives Or Adhesive Processes (AREA)
  • Magnetic Heads (AREA)

Abstract

For the rapid, cost-effective and environmentally friendly joining of wire guide rings (3) and ferrite core halves (1) it is specified according to the invention to form the wire guide rings (3) from a material which is transparent for ultraviolet light, and to use an adhesive which adheres under the effect of ultraviolet light. This special adhesive contains in the final adhesive mixture, apart from the basic material of urethane acrylate, other acrylates such as, for example, hydroxypropyl acrylate, isobornyl acrylate and methacrylate ester. The proportion of urethane acrylate should be 30 to 40 percent by weight and the proportion of other acrylates should be 15 to 45 percent by weight based on the final adhesive mixture. If large tolerances between the wire guide rings (3) and the ferrite core halves (1) are to be compensated, it is advantageous if the respective proportion of the other acrylates in the final adhesive mixture is equally high. <IMAGE>

Description

Technisches GebietTechnical field

Die Erfindung befaßt sich mit Ferritkernhälften zur Vertikalablenkung von Elektronenstrahlen in Bildröhren, insbesondere mit der Befestigung von Drahtführungsringen auf den Ferritkernhälften.The invention is concerned with ferrite core halves for the vertical deflection of electron beams in picture tubes, in particular with the attachment of wire guide rings on the ferrite core halves.

Stand der TechnikState of the art

Gemaß dem Stand der Technik sind Drahtführungsringe, welche durch ihre Ausformung beim Bewickeln von Vertikalablenkspulen als Anschläge oder Umlenkpunkte dienen, mit zumindest einem Rand der jeweiligen Ferritkernhälfte fest verbunden. Diese Verbindung ist üblicherweise als Klebeverbindung ausgeführt.According to the prior art, wire guide rings, which serve as stops or deflection points due to their shape when winding vertical deflection coils, are firmly connected to at least one edge of the respective ferrite core half. This connection is usually designed as an adhesive connection.

Gemäß einem bekannten Verbindungsverfahren, ist die Verbindung von Ferritkernhälfte und Drahtführungsring als Lösemitteldiffusionsverklebung ausgeführt. Diese Verbindung gewährleistet eine gute Haftung des Drahtführungsringes auf der Ferritkernhälfte. Nachteilig ist jedoch, daß das Lösemittel Trichloräthylen enthält. Auf die gesundheitlichen Gefahren, die von Trichloräthylen ausgehen können, sowie auf den hohen apparativen Aufwand, der mit dem Einsatz von Trichloräthylen verbunden ist, braucht an dieser Stelle nicht gesondert eingegangen zu werden.According to a known connection method, the connection of the ferrite core half and the wire guide ring is designed as a solvent diffusion bond. These Connection ensures good adhesion of the wire guide ring to the ferrite core half. However, it is disadvantageous that the solvent contains trichlorethylene. The health hazards that can arise from trichlorethylene, as well as the high expenditure on equipment associated with the use of trichlorethylene, need not be dealt with separately here.

Toleranzen zwischen den Ferritkernhälften und Drahtführungsringen werden bei der Lösemitteldispersionsverklebung dadurch ausgeschlossen, daß die Verbindung von Ferritkernhälften und Drahtführungsringen als Druckverklebung ausgeführt wird, wobei eine Aushärtzeit von etwa 30 bis 40 Sekunden erforderlich ist.Tolerances between the ferrite core halves and wire guide rings in solvent dispersion bonding are excluded by the fact that the connection of ferrite core halves and wire guide rings is carried out as pressure bonding, a curing time of about 30 to 40 seconds being required.

Auch könnte die Verklebung von Drahtführungsringen und Ferritkernhälften mittels zweikomponentiger Klebstoffe ausgeführt sein. Diese an sich bekannten Klebstoffe sind aber zum einen sehr teuer sowie in der Verarbeitung sehr aufwendig. In diesem Zusammenhang sei nur darauf hingewiesen, daß bei der Verwendung von zweikomponentigen Klebstoffen Unmengen an Lösemitteln erforderlich sind, um ein Verkleben der Klebedüse auszuschließen.The bonding of wire guide rings and ferrite core halves could also be carried out using two-component adhesives. These adhesives, which are known per se, are, on the one hand, very expensive and very complex to process. In this context, it should only be pointed out that when using two-component adhesives, immense amounts of solvents are required to prevent the adhesive nozzle from sticking.

Cyanacrylate als Klebstoffe für die Verbindung von Drahrführungsringen mit Ferritkernen sind ebenfalls bekannt. Der Einsatz dieser Klebstoffe erfordert aber sehr enge Toleranzen zwischen Ferritkern und Drahtführungsring, wenn schnell härtende Mischungen dieses Klebstoffs verwendet werden. Da die Anforderungen an die Toleranzen von Ferritkernen und die Drahtführungsringen in der Großserienfertigung nur mit unverhältnismäßig großem Kostenaufwand eingehalten werden können und im übrigen diese Mischungen dazu neigen, in den porösen Ferritkern einzudringen und dadurch die Festigkeit der Klebeverbindung an sich beeinträchtigen, werden üblicherweise Cyanacrylatklebstoffe eingesetzt, die von ihrer Konsistenz her zähflüssiger sind und daher langsamer aushärten. Um mittels der langsam aushärtenden Cyanacrylatklebstoffe eine gute Verbindung von Ferritkern und Drahtführungsring zu erreichen, ist je nach Toleranz zwischen Drahtführungsring und Ferritkern eine Aushärtzeit von etwa drei bis vier Minuten erforderlich. Da wegen dieser vergleichsweise langen Aushärtzeit von Cyanacrylatklebstoffen auch die Anpreßkraft auf den Drahtführungsring beziehungsweise den Ferritkern ebenso lange einwirken muß, sind bei großen Stückzahlen hohe apparative Aufwendungen erforderlich, um die Andruckzeiten über den Zeitraum von drei bis vier Minuten zu gewährleisten.Cyanoacrylates as adhesives for connecting wire guide rings to ferrite cores are also known. However, the use of these adhesives requires very tight tolerances between the ferrite core and the wire guide ring if fast-curing mixtures of this adhesive are used. Because the requirements for the tolerances of ferrite cores and the wire guide rings in mass production are only disproportionately large Expenses can be met and, moreover, these mixtures tend to penetrate into the porous ferrite core and thereby impair the strength of the adhesive connection per se, cyanoacrylate adhesives are usually used which are more viscous in their consistency and therefore harden more slowly. In order to achieve a good connection between the ferrite core and the wire guide ring by means of the slowly curing cyanoacrylate adhesives, depending on the tolerance between the wire guide ring and the ferrite core, a curing time of about three to four minutes is required. Since the comparatively long curing time of cyanoacrylate adhesives also means that the contact pressure on the wire guide ring or the ferrite core must also act for a long time, large quantities of equipment are required to ensure the pressing times over a period of three to four minutes.

Daher liegt der Erfindung die Aufgabe zugrunde, eine Verbindung von Drahtführungsringen mit Ferritkernhälften anzugeben, die von der Einhaltung enger Toleranzen zwischen Drahtführungsring und Ferritkern nicht erfordert, physiologisch unbedenklich ist und extrem kurze Aushärtzeiten zuläßt.The invention is therefore based on the object of specifying a connection of wire guide rings with ferrite core halves which does not require compliance with close tolerances between the wire guide ring and ferrite core, is physiologically harmless and permits extremely short curing times.

Darstellung der ErfindungPresentation of the invention

Diese Aufgabe wird dadurch gelöst, daß der Klebstoff, welcher die Ferritkernhälften und die Drahtführungsringe mit einander verbindet, ein uv-aushärtender Klebstoff ist, und daß die Drahtführungsringe aus Kunststoff gebildet sind, welcher für Ultraviolettes Licht durchlässig ist.This object is achieved in that the adhesive which connects the ferrite core halves and the wire guide rings to one another is a UV-curing adhesive, and in that the wire guide rings are formed from plastic which is transparent to ultraviolet light.

Vorteilhafte Ausbildungen der Erfindung sind in den Ansprüchen 2 bis 6 angegeben.Advantageous embodiments of the invention are specified in claims 2 to 6.

Wird transparentes Polykarbonat als Werkstoff für die Drahtführungsringe verwendet, wird auch bei kurzer Belichtungszeit eine sehr gute Durchhärtung des Klebstoffs erzielt.If transparent polycarbonate is used as the material for the wire guide rings, very good curing of the adhesive is achieved even with a short exposure time.

Um eine sehr gute Verbindung von Drahtführungsring und Ferritkernhälfte zu erzielen, muß der Klebstoff bezogen auf die fertige Klebstoffmischung neben dem Basisstoff Urethanacrylat mit einem Gewichtsprozentanteil zwischen 30 und 50 Prozent einen Gewichtsprozentanteil von 5 bis 45 Prozent anderer Acrylate aufweisen. Sind diese anderen Acrylate Hydroxypropylacrylat, Isobornylacrylat und Methacrylatester und weisen diese anderen Acrylate jeweils einen Gewichtsprozentanteil von 5 bis 15 Prozent bezogen auf die fertige Klebstoffmischung auf, läßt sich auch während schneller Taktzeiten beim Aushärten eine sehr gute Festigkeit der Verbindung zwischen Drahtführungsringen und Ferritkernhälften erzielen. Auch bei großen Toleranzen von bis zu 500 µm ist ein Optimum an Verbindungsfestigkeit und Aushärtezeit dann erreicht, wenn der Gewichtsprozentanteil der anderen Acrylate bezogen auf die fertige Klebstoffmischung gleich groß ist.In order to achieve a very good connection between the wire guide ring and the ferrite core half, the adhesive, based on the finished adhesive mixture, must have a weight percentage of 5 to 45 percent of other acrylates in addition to the base material urethane acrylate with a weight percentage between 30 and 50 percent. If these other acrylates are hydroxypropyl acrylate, isobornyl acrylate and methacrylate esters and these other acrylates each have a weight percentage of 5 to 15 percent based on the finished adhesive mixture, very good strength of the connection between wire guide rings and ferrite core halves can be achieved even during fast cycle times during curing. Even with large tolerances of up to 500 µm, optimum connection strength and curing time are achieved when the percentage by weight of the other acrylates is the same in relation to the finished adhesive mixture.

Kurze Darstellung der FigurenBrief presentation of the figures

Es zeigen:

Figur 1
zwei Ferritkernhälften in Draufsicht, und
Figur 2
eine Ausblickvergrößerung entlang der Schnittkante A - A gemäß Figur 1.
Wege zum Ausführen der Erfindung
Die in Figur 1 gezeigte Anorndung zeigt zwei Ferritkernhälften 1, die zusammen den konisch ausgebildeten Ferritkern einer vertikalen Ablenkeinheit für Bildröhren bilden. Am großen Halbumfang 2 jeder Ferritkernhälfte 1 ist eine Drahtführungsring 3 angeklebt, wobei die Drahtführungsringe 3 nahezu den gesamten Halbumfang 2 der Ferritkernhälften 1 bedecken. Die Drahtführungsringe 3 sind aus transparentem Polykarbonat gebildet. An der dem Ferritkern abgewandten Seite der Drahtführungsringe 3 sind Stege 4 angeformt, die später beim Bewickeln der jeweiligen Ferritkernhälfte 1 als Umlenkpunkte für die Vertikalablenkspulenwicklung (nicht dargestellt) dienen.Show it:
Figure 1
two ferrite core halves in top view, and
Figure 2
an enlargement of the outlook along the cutting edge A - A according to FIG. 1.
Ways of Carrying Out the Invention
The arrangement shown in FIG. 1 shows two ferrite core halves 1 which together form the conical ferrite core of a vertical deflection unit for picture tubes. A wire guide ring 3 is glued to the large half circumference 2 of each ferrite core half 1, the wire guide rings 3 covering almost the entire half circumference 2 of the ferrite core halves 1. The wire guide rings 3 are formed from transparent polycarbonate. On the side of the wire guide rings 3 facing away from the ferrite core, webs 4 are formed, which later serve as deflection points for the vertical deflection coil winding (not shown) when the respective ferrite core half 1 is wound.

Die Drahtführungsringe 3 sind mit den Ferritkernhälften 1 verklebt, wie Figur 2 näher offenlegt. Die Klebenaht 5 wird von einem uv-aushärtenden Klebstoff gebildet, dessen Zusammensetzung die beiden nachfolgenden Tabellen näher veranschaulichen: Tabelle 1 Gewichtsprozent in der fertigen Klebstoffmischung Bezeichnung Hersteller 50 Urethanacrylat, 295 UCB Belgien 10 Hydroxypropylacrylat Firma Röhm, Darmstadt 10 Isobornylacrylat Firma Röhm Darmstadt 10 Methacrylester 13.0 Firma Röhm, Darmstadt 1 Aerosil 200 Degussa 10 Methacrylsäure Merck 5 organisches Silan GF 70 Wacker Chemie 3 Photoinitiator handelsüblich Merck Tabelle 2 Gewichtsprozent in der fertigen Klebstoffmischung Bezeichnung Hersteller 44 Urethanacrylat, 295 UCB Belgien 10 Hydroxypropylacrylat Firma Röhm, Darmstadt 12 Isobornylacrylat Firma Röhm Darmstadt 14 Methacrylester 13.0 Firma Röhm, Darmstadt 1 Aerosil 200 Degussa 10 Methacrylsäure Merck 5 organisches Silan GF 70 Wacker Chemie 3 Photoinitiator handelsüblich Merck The wire guide rings 3 are glued to the ferrite core halves 1, as shown in FIG. 2. The adhesive seam 5 is formed by a UV-curing adhesive, the composition of which is illustrated in more detail in the two tables below: Table 1 Weight percent in the finished adhesive mixture designation Manufacturer 50 Urethane acrylate, 295 UCB Belgium 10th Hydroxypropyl acrylate Röhm company, Darmstadt 10th Isobornyl acrylate Röhm Darmstadt company 10th Methacrylic ester 13.0 Röhm company, Darmstadt 1 Aerosil 200 Degussa 10th Methacrylic acid Merck 5 organic silane GF 70 Wacker chemistry 3rd Photoinitiator commercially available Merck Weight percent in the finished adhesive mixture designation Manufacturer 44 Urethane acrylate, 295 UCB Belgium 10th Hydroxypropyl acrylate Röhm company, Darmstadt 12th Isobornyl acrylate Röhm Darmstadt company 14 Methacrylic ester 13.0 Röhm company, Darmstadt 1 Aerosil 200 Degussa 10th Methacrylic acid Merck 5 organic silane GF 70 Wacker chemistry 3rd Photoinitiator commercially available Merck

Auffällig bei den beiden Ausführungsbeispielen ist, daß der Anteil der anderen Acrylate (Hydroxypropylacrylat, Isobornylacrylat und Methacrylatester) mit etwa gleichem Anteil in der fertigen Klebstoffmischung enthalten sind. Die Einhaltung dieses Verhältnisses zwischen den anderen Acrylaten führt dazu, daß die Haftung der Drahtführungsringe 3 auf den Ferritkernhälften 1 besonders gut ist. Selbst Drahtführungsringe 3 und Ferritkernhälften 1, zwischen denen Toleranzen bis zu 500 µm bestehen, sind miteinander zu verkleben.It is striking in the two exemplary embodiments that the proportion of the other acrylates (hydroxypropyl acrylate, isobornyl acrylate and methacrylate ester) is contained in the finished adhesive mixture with approximately the same proportion. Compliance with this ratio between the other acrylates means that the adhesion of the wire guide rings 3 to the ferrite core halves 1 is particularly good. Even wire guide rings 3 and ferrite core halves 1, between which there are tolerances of up to 500 µm, are to be glued together.

BezugszeichenlisteReference symbol list

11
FerritkernhälftenFerrite core halves
22nd
HalbumfangHalf circumference
33rd
DrahtführungsringeWire guide rings
44th
StegeWalkways
55
KlebedrahtAdhesive wire

Claims (6)

Ferritkernhälften zur Vertikalablenkung von Elektronenstahlen in Bildröhren, mit aus Kunststoff gebildeten und mit den Ferritkernhälften verbundenen Drahtführungsringen,
dadurch gekennzeichnet,
daß die Drahtführungsringe (3) aus Kunststoff gebildet sind, der durchlässig für ultraviolettes Licht ist, und daß der Klebstoff, der die Drahtführungsringe (3) mit den Ferritkernhälften (1) verbindet, ein uv-aushärtender Klebstoff ist.Ferrite core halves for the vertical deflection of electron beams in picture tubes, with wire guide rings formed from plastic and connected to the ferrite core halves,
characterized,
that the wire guide rings (3) are made of plastic that is transparent to ultraviolet light, and that the adhesive that connects the wire guide rings (3) to the ferrite core halves (1) is a UV-curing adhesive. Ferritkernhälften nach Anspruch 1,
dadurch gekennzeichnet,
daß der Werkstoff für die Drahtführungsringe (3) ein transparentes Polykarbonat ist.Ferrite core halves according to claim 1,
characterized,
that the material for the wire guide rings (3) is a transparent polycarbonate. Ferritkernhälften nach Anspruch 1,
dadurch gekennzeichnet,
daß der Klebstoff in der fertigen Klebstoffmischung neben dem Basisstoff Urethanacrylat mit einem Gewichtsprozentanteil zwischen 30 und 50 % einen Gewichtsprozentanteil zwischen 15 und 45 % anderer Acrylate aufweist.Ferrite core halves according to claim 1,
characterized,
that the adhesive in the finished adhesive mixture in addition to the base material urethane acrylate with a weight percentage between 30 and 50% Has weight percentage between 15 and 45% of other acrylates. Ferritkernhälften nach Anspruch 3,
dadurch gekennzeichnet,
daß die anderen Acrylate Hydroxypropylacrylat, Isobornylacrylat und Methacrylatester sind.Ferrite core halves according to claim 3,
characterized,
that the other acrylates are hydroxypropyl acrylate, isobornyl acrylate and methacrylate esters. Ferritkernhälften nach Anspruch 4,
dadurch gekennzeichnet,
daß bezogen auf die fertige Klebstoffmischung der Anteil von Hydroxypropylacrylat 5 bis 15 Gewichtsprozente, von Isobornylacrylat 5 bis 15 Gewichtsprozente und von Methacrylatester 5 bis 15 Gewichtsprozente beträgt.Ferrite core halves according to claim 4,
characterized,
that, based on the finished adhesive mixture, the proportion of hydroxypropyl acrylate is 5 to 15 percent by weight, of isobornyl acrylate is 5 to 15 percent by weight and of methacrylate ester is 5 to 15 percent by weight. Ferritkernhälften nach Anspruch 4,
dadurch gekennzeichnet,
daß die Gewichtsprozentanteile von Hydroxypropylacrylat, Isobornylacrylat und Methacrylatester in der fertigen Klebstoffmischung gleich groß sind.Ferrite core halves according to claim 4,
characterized,
that the weight percentages of hydroxypropyl acrylate, isobornyl acrylate and methacrylate ester in the finished adhesive mixture are the same.
EP92119021A 1991-11-16 1992-11-06 Ferrite core for vertical deflection of electron beams Expired - Lifetime EP0543231B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4137785 1991-11-16
DE4137785A DE4137785A1 (en) 1991-11-16 1991-11-16 FERRITE CORE ADHESIVES FOR VERTICAL DISTRACTION OF ELECTRON BEAMS

Publications (2)

Publication Number Publication Date
EP0543231A1 true EP0543231A1 (en) 1993-05-26
EP0543231B1 EP0543231B1 (en) 1995-02-22

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Application Number Title Priority Date Filing Date
EP92119021A Expired - Lifetime EP0543231B1 (en) 1991-11-16 1992-11-06 Ferrite core for vertical deflection of electron beams

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DE (2) DE4137785A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4422487C2 (en) 1994-06-28 2002-09-19 Matsushita Electric Ind Co Ltd Deflection arrangement for picture tubes and method for their production
DE19757096A1 (en) * 1997-12-20 1999-06-24 Nokia Deutschland Gmbh Dispersion adhesive

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EP0118150A1 (en) * 1983-02-14 1984-09-12 Koninklijke Philips Electronics N.V. Method of manufacturing a saddle-shaped coil

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US3947793A (en) * 1975-03-10 1976-03-30 Rca Corporation Multi-layer toroidal deflection yoke
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JPS62107352U (en) * 1985-12-25 1987-07-09
US4687966A (en) * 1986-08-27 1987-08-18 Rca Corporation Deflection yoke for adhesive assembly and mounting
DE3803477A1 (en) * 1988-02-05 1989-08-17 Bayer Ag RADIATION-HARDENING, THERMO-ACTIVATIVE ADHESIVE BLENDS
DE4022235A1 (en) * 1990-07-12 1992-01-16 Herberts Gmbh METHOD FOR FIXING WRAPPED GOODS AND USE OF RADICALLY POLYMERIZABLE MEASURES HERE
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Publication number Priority date Publication date Assignee Title
EP0118150A1 (en) * 1983-02-14 1984-09-12 Koninklijke Philips Electronics N.V. Method of manufacturing a saddle-shaped coil

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Title
DATABASE WPI Week 7417, Derwent Publications Ltd., London, GB; AN 74-31931 & JP-A-49 013 870 (KANSAI PAINT) 3. April 1974 *
PATENT ABSTRACTS OF JAPAN vol. 10, no. 108 (E-398)23. April 1986 & JP-A-60 245 203 ( NIHON FERRITE ) 5. Dezember 1985 *
PATENT ABSTRACTS OF JAPAN vol. 13, no. 290 (C-614)5. Juli 1989 & JP-A-01 085 268 ( KEMITETSUKU ) 30. März 1989 *

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DE59201462D1 (en) 1995-03-30
EP0543231B1 (en) 1995-02-22
DE4137785A1 (en) 1993-05-19

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