CA2086669A1 - Coil former and method of producing it - Google Patents
Coil former and method of producing itInfo
- Publication number
- CA2086669A1 CA2086669A1 CA002086669A CA2086669A CA2086669A1 CA 2086669 A1 CA2086669 A1 CA 2086669A1 CA 002086669 A CA002086669 A CA 002086669A CA 2086669 A CA2086669 A CA 2086669A CA 2086669 A1 CA2086669 A1 CA 2086669A1
- Authority
- CA
- Canada
- Prior art keywords
- section
- coil former
- connectors
- fact
- coil
- 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.)
- Abandoned
Links
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/30—Assembling printed circuits with electric components, e.g. with resistor
- H05K3/32—Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits
- H05K3/34—Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits by soldering
- H05K3/341—Surface mounted components
- H05K3/3421—Leaded components
- H05K3/3426—Leaded components characterised by the leads
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F5/00—Coils
- H01F5/04—Arrangements of electric connections to coils, e.g. leads
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F5/00—Coils
- H01F5/04—Arrangements of electric connections to coils, e.g. leads
- H01F2005/046—Details of formers and pin terminals related to mounting on printed circuits
-
- 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Abstract
The proposal is for the production of a coil former with ends (5) injection moulded in a lower flange (2') for the through connection of suitable terminal pins (3) which can be wound in a section (4) beneath the lower flange (2') with ends of coil windings, in which the terminal pins (3) are flattened beneath the section (4) into a rectangular cross-section (S3) and bent in the region of the flattened section (S3) to form surface-mountable connectors (1). This makes it possible to use the same production method for surface-mountable coil formers as for through contacts. In addition, the same winding machines may be used for coil formers with both types of contact.
Description
W( /20079 PCT/DE92/00335 Description:
Coil Former and Method of Producing it The invention refers to a coil former with ends of terminal pins suitable for thxough-contact injection-moulded in a lower flange;
these pins can be wound in a section beneath the lower flange with ends of coil windings. The invention also refers to a process for the production of a coil former of this kind.
The conventional method of providing contacts for electronic components on circuit boards has been to pierce holes in the boards, through which terminal pins projected, and to solder the pins to the underside of the board on which were contact surfaces of printed circuits pierced by the holes. It is, however, becoming increasingly the practice to provide the surface contacts on such circuit boards by placing the components directly on contact surfaces of the board and soldering them to these surfaces.
If necessary, the components can also be attached to the board by gluing. When the contacts are provided by this method the components must have suitable connectors. As a general rule lamellate connectors are used for this purpose and these connectors are anchored in the housing of the component and bent to form an angle outside the housing. The regular practice is to lead these connectors out of the housing laterally and downwards, and then once again to bend them outwards. It has been found that it is not possible to attach sheet metal strips of this ~ind automatically to a component made of thermosetting plastic, for example a coil former made of thermosetting plastic, because the tool cannot be REPLACEMENT PAGE
.
r 2/20079 PCT/DE92/00335 sealed and consequently thermosetting plastic material always escapes and has to be removed again at a subsequent stage of the processing of the component. In addition, connectors made of sheet metal strips, when used on a coil former, are liable to suffer damage while the coil former is being wound and deform easily along the bends, so that the connectors with their ends bent outwards ro longer lie flat on the contact surface and therefore do not ensure proper contact.
It is also ~nown how to make conventional housings with lamellate connection terminals, which can be plugged into a suitable receptacle, surface-mountable by bending the terminals back. The result is an ar~angement comparable to the above-mentioned lamellate connectors for the surface assembly.
Because of the problems with the known lamellate connectors it has been proposed to use, as connectors for surface-mountable components, pins with a relatively large cross-section and a lower end gradually broadening in the cross-section (so that in vertical section the shape is that of a T). The cost of this method is high and uneconomic for most cf the connectors required.
The basic purpose of the invention is to create a coil former which is free of most of the above-mentioned disadvantages.
The invention achieves this purpose by means of a coil former of the type described initially, which is characterized in that the terminal pins are flattened beneath the section in order to give them a rectangular cross-section and are bent in the region of the flattened cross-section to form surface-mountable connectors.
The above-mentioned purpose is also achieved by a method of REPLACEMENT PAGE
Coil Former and Method of Producing it The invention refers to a coil former with ends of terminal pins suitable for thxough-contact injection-moulded in a lower flange;
these pins can be wound in a section beneath the lower flange with ends of coil windings. The invention also refers to a process for the production of a coil former of this kind.
The conventional method of providing contacts for electronic components on circuit boards has been to pierce holes in the boards, through which terminal pins projected, and to solder the pins to the underside of the board on which were contact surfaces of printed circuits pierced by the holes. It is, however, becoming increasingly the practice to provide the surface contacts on such circuit boards by placing the components directly on contact surfaces of the board and soldering them to these surfaces.
If necessary, the components can also be attached to the board by gluing. When the contacts are provided by this method the components must have suitable connectors. As a general rule lamellate connectors are used for this purpose and these connectors are anchored in the housing of the component and bent to form an angle outside the housing. The regular practice is to lead these connectors out of the housing laterally and downwards, and then once again to bend them outwards. It has been found that it is not possible to attach sheet metal strips of this ~ind automatically to a component made of thermosetting plastic, for example a coil former made of thermosetting plastic, because the tool cannot be REPLACEMENT PAGE
.
r 2/20079 PCT/DE92/00335 sealed and consequently thermosetting plastic material always escapes and has to be removed again at a subsequent stage of the processing of the component. In addition, connectors made of sheet metal strips, when used on a coil former, are liable to suffer damage while the coil former is being wound and deform easily along the bends, so that the connectors with their ends bent outwards ro longer lie flat on the contact surface and therefore do not ensure proper contact.
It is also ~nown how to make conventional housings with lamellate connection terminals, which can be plugged into a suitable receptacle, surface-mountable by bending the terminals back. The result is an ar~angement comparable to the above-mentioned lamellate connectors for the surface assembly.
Because of the problems with the known lamellate connectors it has been proposed to use, as connectors for surface-mountable components, pins with a relatively large cross-section and a lower end gradually broadening in the cross-section (so that in vertical section the shape is that of a T). The cost of this method is high and uneconomic for most cf the connectors required.
The basic purpose of the invention is to create a coil former which is free of most of the above-mentioned disadvantages.
The invention achieves this purpose by means of a coil former of the type described initially, which is characterized in that the terminal pins are flattened beneath the section in order to give them a rectangular cross-section and are bent in the region of the flattened cross-section to form surface-mountable connectors.
The above-mentioned purpose is also achieved by a method of REPLACEMENT PAGE
2~85~13~
W~ /20079 PCT/DE92/00335 producing a coil former in which a conventional pin which can be used for through connections is anchored in the conventional manner in the flange of the coil former, the free end of the portion of the terminal pin projecting from the flange being flattened by pressing beneath the section of the terminal pin used for winding and the flattened portion of the terminal pin being bent to form a surface-mountable connector.
The invention offers the following advantage: a coil former for providing surface contacts can, in principle, be produced in the same manner as a coil former for producing through-connections by the conventional method, and the pins which can be used to produce through-connections can then be flattened and bent back, thereby creating a component suitable for surface mounting. It is therefore possible, in principle, to produce by the same method coil formers used to make through-contacts in the present manner and to make surface contacts and to provide the coil formers with connectors. All that is necessary is to process subsequently the connectors of the component intended for surface mounting and to shape them in the manner described above. A coil former will have the advantage that the connectors can be led downwards out of the coil former in the form of terminal pins and then bent. As compared with the method of leading lamellate connectors out laterally and downwards and then bending them outwards, there will be a significant saving of space on the board which in the case of small coil formers can be as much as one third.
The embodiment of a coil former in accordance with the invention is particularly advantageous, because a rigid section of the connector is available for winding with the end of the coil wire, so that, mechanically speaking, the connector is not likely to be bent out of shape while it is being made. An embodiment in which the REPLACEMENT PAGE
wc /20079 2 0 ~ 5 ~ S ~PCT/DE92/00335 portion of the connector projecting from the component has a square cross-section preceding the flattened portion ensures a geometry which is especially suitable for the winding on of the coil.
The introduction of wire-shaped terminal pins into the injection mould, for example, when a coil former is being produced, is effected by the conventional method and does not present any problems~ The invention therefore requires that no use be made of expensive new terminal pins with modified cross-sections, which may have to be straightened and inserted in a specific location, thereby further increasing the cost.
It is particularly advantageous to have the connectors, which are located on at least two exterior sides of the component, flattened by positioning a backrest on the inner side of the connectors and pressed by means of a die from outside against the firmly fixed backrest. Because of the flattening, a step is formed on the outer side of the connector. As a rule the backrest is moved as a piece between the connectors and the press dies then press the connectors from outside against the backrest, so that the connectors assume the desired flattened shape. The invention permits not only the use of the same kind of production method and the use, if necessary, of the same kind of housings for the components, but also the use of identical winding machines for the production of coil formers. The method to which the invention refers can itself be applied without exerting greater force to the component, so that the anchoring of the connectors in the component will not be subjected to dangerous strain if the terminal`pins are subsequently deformed.
The connectors to which the invention refers can be made with a high degree of precision. It is, for example, possible to bend the REPLACEMENT P.~GE
Wc /200~9 2 0 8 ~ ~ ~ 3PCT/DE92/00335 flattened terminal pin in such a way that a small angle is formed between the contact surface and the supporting surface of the connector, resulting in an improved flow of solder into the region of the connector, due to a certain capillary effect, and so in a firmer solder joint.
REPLACEMENT PAGE
W( /20079 2 0 ~ ~ ~ S ~3 PCT/DE92/00335 The invention will be explained in detail with reference to the examples of an embodiment shown in the drawing. The drawing shows the following:
igure 1 - a terminal pin embedded in a component in four phases of its production igure 2 - side elevation of a coil former with anchored terminal pins igure 3 - the coil former as in Figure ~ with shortened terminal pins igure 4 - the coil former as in Figure 3 after flattening of the terminal pins by pressing igure 5 - the coil former with connectors bent outwards igure 6 - top view of the coil former as in Figure 5.
Figure 1 shows a connector 1 which is anchored in a component 2.
This is usually effected during the production of the plastic component (e.g. coil former) by placing the connector in an injection mould for the production of the component 2 and then partially injection-moulding it. In the present instance the connector consists of a pin 3 with a round cross-section, as can be seen from the illustration of the section S2 in Figure 1. At the upper end the pin 3 is stamped to form a square ~ with a s~uare cross-section, as can be seen from the illustration of the section Sl. The connector 1 is anchored in the component with a round socket 5. In the form illustrated in Figure la the connector 1 is a pin 3 of the type generally used for the conventional through-REPLACEMENT PAGE
WO '20079 2 0 ~ 6 ~ 6 9 PCT/DE92/00335 contacts.
When a connector 1 of this kind is to be used or a surfaceassembly, the terminal pin 3 is first of all shortened by one end being cut off, as is shown in Figure lb. The shortening is performed at some distance below the square region 4, in the region of the round cross-section S2.
In the next step of the method the free end of the connector 1 is flattened by pressing, so that there is still, beneath a remaining portion of the square region 4, a piece of the pin 6 whose rectangular cross-section is illustrated as section S3 in Figure 1.
Figure lc shows that the shaping of a rectangular cross-section as in S3 is effected on the inner side of connector 1 mainly by pressure applied from outside inwards against a fixed backrest.
The piece 6 in the connector is then bent outwards at a distance from the remaining square region 4 to ~orm.essentially a right angle; here it is advantageous if an acute angle is fonmed with a level supporting surface. The remaining square region 4 can advantageously be wound with the ends of a coil winding so as to produce the electrical connection with the coil. The winding is performed in the rigid square region 4 so that the bent piece 6 is not damaged by the winding process.
Figure 2 shows the state in accordance with Figure la of a coil former 2 as an electronic component. The connectors 1, embodied as terminal pins, are injection-moulded in attached flanges 2' of the c~il former 2.
Figure 3 shows the state of the connectors 1 following the shortening of the terminal pins 3 in accordance with Figure lb.
REPLACEMENT PAGE
Wo '20079 2 Q ~ 6 6 ~ 9 PCT/DE92/00335 Figure 4 shows more clearly the flattening of the connectors 1 in accordance with Figure lc, so that it can be clearly seen that the material is forced inwards from outside, that is to say, a press die is applied from outside inwards against a backrest located inside.
Fi~ure 5 shows the situation after the connectors 1 have been bent outwards from the centre of the coil former.
Figure 6 shows more clearly that the flanges 2' of the coil former 2 are disposed laterally and, in this example, that each carries three connectors 1. Following the shortening in accordance with Figure 3 a backrest can be inserted from beneath on the inner side and against the connectors 1; the exterior contour of the backrest is adapted to the position of the connectors 1. It is then possible to apply press dies against the connectors 1 from outside to produce a flattening in accordance with Figure 4.
REPIIACEMENT PAGE
W~ /20079 PCT/DE92/00335 producing a coil former in which a conventional pin which can be used for through connections is anchored in the conventional manner in the flange of the coil former, the free end of the portion of the terminal pin projecting from the flange being flattened by pressing beneath the section of the terminal pin used for winding and the flattened portion of the terminal pin being bent to form a surface-mountable connector.
The invention offers the following advantage: a coil former for providing surface contacts can, in principle, be produced in the same manner as a coil former for producing through-connections by the conventional method, and the pins which can be used to produce through-connections can then be flattened and bent back, thereby creating a component suitable for surface mounting. It is therefore possible, in principle, to produce by the same method coil formers used to make through-contacts in the present manner and to make surface contacts and to provide the coil formers with connectors. All that is necessary is to process subsequently the connectors of the component intended for surface mounting and to shape them in the manner described above. A coil former will have the advantage that the connectors can be led downwards out of the coil former in the form of terminal pins and then bent. As compared with the method of leading lamellate connectors out laterally and downwards and then bending them outwards, there will be a significant saving of space on the board which in the case of small coil formers can be as much as one third.
The embodiment of a coil former in accordance with the invention is particularly advantageous, because a rigid section of the connector is available for winding with the end of the coil wire, so that, mechanically speaking, the connector is not likely to be bent out of shape while it is being made. An embodiment in which the REPLACEMENT PAGE
wc /20079 2 0 ~ 5 ~ S ~PCT/DE92/00335 portion of the connector projecting from the component has a square cross-section preceding the flattened portion ensures a geometry which is especially suitable for the winding on of the coil.
The introduction of wire-shaped terminal pins into the injection mould, for example, when a coil former is being produced, is effected by the conventional method and does not present any problems~ The invention therefore requires that no use be made of expensive new terminal pins with modified cross-sections, which may have to be straightened and inserted in a specific location, thereby further increasing the cost.
It is particularly advantageous to have the connectors, which are located on at least two exterior sides of the component, flattened by positioning a backrest on the inner side of the connectors and pressed by means of a die from outside against the firmly fixed backrest. Because of the flattening, a step is formed on the outer side of the connector. As a rule the backrest is moved as a piece between the connectors and the press dies then press the connectors from outside against the backrest, so that the connectors assume the desired flattened shape. The invention permits not only the use of the same kind of production method and the use, if necessary, of the same kind of housings for the components, but also the use of identical winding machines for the production of coil formers. The method to which the invention refers can itself be applied without exerting greater force to the component, so that the anchoring of the connectors in the component will not be subjected to dangerous strain if the terminal`pins are subsequently deformed.
The connectors to which the invention refers can be made with a high degree of precision. It is, for example, possible to bend the REPLACEMENT P.~GE
Wc /200~9 2 0 8 ~ ~ ~ 3PCT/DE92/00335 flattened terminal pin in such a way that a small angle is formed between the contact surface and the supporting surface of the connector, resulting in an improved flow of solder into the region of the connector, due to a certain capillary effect, and so in a firmer solder joint.
REPLACEMENT PAGE
W( /20079 2 0 ~ ~ ~ S ~3 PCT/DE92/00335 The invention will be explained in detail with reference to the examples of an embodiment shown in the drawing. The drawing shows the following:
igure 1 - a terminal pin embedded in a component in four phases of its production igure 2 - side elevation of a coil former with anchored terminal pins igure 3 - the coil former as in Figure ~ with shortened terminal pins igure 4 - the coil former as in Figure 3 after flattening of the terminal pins by pressing igure 5 - the coil former with connectors bent outwards igure 6 - top view of the coil former as in Figure 5.
Figure 1 shows a connector 1 which is anchored in a component 2.
This is usually effected during the production of the plastic component (e.g. coil former) by placing the connector in an injection mould for the production of the component 2 and then partially injection-moulding it. In the present instance the connector consists of a pin 3 with a round cross-section, as can be seen from the illustration of the section S2 in Figure 1. At the upper end the pin 3 is stamped to form a square ~ with a s~uare cross-section, as can be seen from the illustration of the section Sl. The connector 1 is anchored in the component with a round socket 5. In the form illustrated in Figure la the connector 1 is a pin 3 of the type generally used for the conventional through-REPLACEMENT PAGE
WO '20079 2 0 ~ 6 ~ 6 9 PCT/DE92/00335 contacts.
When a connector 1 of this kind is to be used or a surfaceassembly, the terminal pin 3 is first of all shortened by one end being cut off, as is shown in Figure lb. The shortening is performed at some distance below the square region 4, in the region of the round cross-section S2.
In the next step of the method the free end of the connector 1 is flattened by pressing, so that there is still, beneath a remaining portion of the square region 4, a piece of the pin 6 whose rectangular cross-section is illustrated as section S3 in Figure 1.
Figure lc shows that the shaping of a rectangular cross-section as in S3 is effected on the inner side of connector 1 mainly by pressure applied from outside inwards against a fixed backrest.
The piece 6 in the connector is then bent outwards at a distance from the remaining square region 4 to ~orm.essentially a right angle; here it is advantageous if an acute angle is fonmed with a level supporting surface. The remaining square region 4 can advantageously be wound with the ends of a coil winding so as to produce the electrical connection with the coil. The winding is performed in the rigid square region 4 so that the bent piece 6 is not damaged by the winding process.
Figure 2 shows the state in accordance with Figure la of a coil former 2 as an electronic component. The connectors 1, embodied as terminal pins, are injection-moulded in attached flanges 2' of the c~il former 2.
Figure 3 shows the state of the connectors 1 following the shortening of the terminal pins 3 in accordance with Figure lb.
REPLACEMENT PAGE
Wo '20079 2 Q ~ 6 6 ~ 9 PCT/DE92/00335 Figure 4 shows more clearly the flattening of the connectors 1 in accordance with Figure lc, so that it can be clearly seen that the material is forced inwards from outside, that is to say, a press die is applied from outside inwards against a backrest located inside.
Fi~ure 5 shows the situation after the connectors 1 have been bent outwards from the centre of the coil former.
Figure 6 shows more clearly that the flanges 2' of the coil former 2 are disposed laterally and, in this example, that each carries three connectors 1. Following the shortening in accordance with Figure 3 a backrest can be inserted from beneath on the inner side and against the connectors 1; the exterior contour of the backrest is adapted to the position of the connectors 1. It is then possible to apply press dies against the connectors 1 from outside to produce a flattening in accordance with Figure 4.
REPIIACEMENT PAGE
Claims (7)
1. A coil former with the ends (5) of terminal pins (3) suitable for through-contact injection-moulded in a lower flange (2'), where these pins can be wound in a section (4) beneath the lower flange (2') with ends of coil windings, characterized by the fact that the terminal pins (3) are flattened beneath the section (4) in order to give them a rectangular cross-section (S3) and are bent near the flattened cross-section (S3) to form connectors (1) suitable for surface mounting.
2. A coil former according to Claim 1, characterized by the fact that the connectors (1) are bent outwards essentially at a right angle from the centre of the coil former (2).
3. A coil former according to Claims 1 or 2, characterized by the fact that the flattening is formed only on the outside of the connector (1).
4. A coil former according to Claims 1 or 2, characterized by the fact that the section to be wound (4) is shaped to form a square cross-section (S1).
5. A method to produce a coil former according to one of the Claims 1 through 4, characterized by the fact that a conventional pin used in through-contact technology (3) which in conventional technology is anchored in the flange (2') of the coil former (2), so that the free end (6) of the terminal pin (3) extending beyond the flange (2') and that is to be used for winding is flattened below the section (4) of the terminal pin (3) by pressing and that the flattened section (6) of the connector (1) is bent to form a connector suitable WO ??/20079 PCT/DE92/00335 for surface mounting (1).
6. A method according to Claim 5, in which the connectors (1) are located on at least two external sides of the coil former (2), characterized by the fact that a backrest is positioned on the inside of the terminal pin (3) and that a press die is used from the outside to press the terminal pins (3) against the firmly fixed in place backrest.
7. A method according to Claims 5 or 6, characterized by the fact that the terminal pin (3) is shortened before pressing.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE4114391A DE4114391C2 (en) | 1991-05-03 | 1991-05-03 | Bobbin and process for its manufacture |
| DEP4114391.4 | 1991-05-03 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2086669A1 true CA2086669A1 (en) | 1992-11-04 |
Family
ID=6430856
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002086669A Abandoned CA2086669A1 (en) | 1991-05-03 | 1992-04-23 | Coil former and method of producing it |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP0537314B1 (en) |
| AT (1) | ATE130953T1 (en) |
| CA (1) | CA2086669A1 (en) |
| DE (2) | DE4114391C2 (en) |
| WO (1) | WO1992020079A1 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19512343C1 (en) * | 1995-04-01 | 1996-01-25 | Hohenloher Spulenkoerper | Spool for winding wire |
| US5796324A (en) * | 1996-11-12 | 1998-08-18 | Delco Electronics Corporation | Surface mount coil assembly |
| DE102015211734A1 (en) | 2015-06-24 | 2016-12-29 | SUMIDA Components & Modules GmbH | SMD component |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4820653U (en) * | 1971-07-19 | 1973-03-08 | ||
| DE3227645A1 (en) * | 1982-07-23 | 1984-01-26 | Siemens AG, 1000 Berlin und 8000 München | Electronic component and a method for its production |
| NL8300513A (en) * | 1983-02-11 | 1984-09-03 | Philips Nv | HIGH FREQUENCY COIL WITH CONNECT PINS. |
| EP0169261B1 (en) * | 1984-07-25 | 1989-10-11 | Matsushita Electric Industrial Co., Ltd. | Electronic component |
| EP0182068A3 (en) * | 1984-10-08 | 1987-02-04 | Roederstein Spezialfabriken für Bauelemente der Elektronik und Kondensatoren der Starkstromtechnik GmbH | Surface-mounting capacitor |
| DE8904003U1 (en) * | 1989-03-30 | 1989-05-18 | Siemens Ag, 1000 Berlin Und 8000 Muenchen, De | |
| US5008644A (en) * | 1989-08-31 | 1991-04-16 | At&T Bell Laboratories | Terminal assembly for linear magnetic component bobbin |
-
1991
- 1991-05-03 DE DE4114391A patent/DE4114391C2/en not_active Expired - Fee Related
-
1992
- 1992-04-23 DE DE59204493T patent/DE59204493D1/en not_active Revoked
- 1992-04-23 WO PCT/DE1992/000335 patent/WO1992020079A1/en not_active Application Discontinuation
- 1992-04-23 EP EP92909117A patent/EP0537314B1/en not_active Revoked
- 1992-04-23 CA CA002086669A patent/CA2086669A1/en not_active Abandoned
- 1992-04-23 AT AT92909117T patent/ATE130953T1/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| DE4114391A1 (en) | 1992-11-05 |
| ATE130953T1 (en) | 1995-12-15 |
| EP0537314A1 (en) | 1993-04-21 |
| WO1992020079A1 (en) | 1992-11-12 |
| DE59204493D1 (en) | 1996-01-11 |
| EP0537314B1 (en) | 1995-11-29 |
| DE4114391C2 (en) | 1994-10-20 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Discontinued |