EP0418766A1 - Pressure transmitting element for a terminal - Google Patents

Pressure transmitting element for a terminal Download PDF

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Publication number
EP0418766A1
EP0418766A1 EP90117800A EP90117800A EP0418766A1 EP 0418766 A1 EP0418766 A1 EP 0418766A1 EP 90117800 A EP90117800 A EP 90117800A EP 90117800 A EP90117800 A EP 90117800A EP 0418766 A1 EP0418766 A1 EP 0418766A1
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EP
European Patent Office
Prior art keywords
transmission element
pressure transmission
halves
element according
terminal
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.)
Withdrawn
Application number
EP90117800A
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German (de)
French (fr)
Inventor
Bernd Optenhövel
Toni Brack
Heinz Wennel
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.)
Weco Wester Ebbinghaus & Co
Original Assignee
Weco Wester Ebbinghaus & Co
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Weco Wester Ebbinghaus & Co filed Critical Weco Wester Ebbinghaus & Co
Publication of EP0418766A1 publication Critical patent/EP0418766A1/en
Withdrawn legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/28—Clamped connections, spring connections
    • H01R4/38—Clamped connections, spring connections utilising a clamping member acted on by screw or nut
    • H01R4/40—Pivotable clamping member
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/28—Clamped connections, spring connections
    • H01R4/30—Clamped connections, spring connections utilising a screw or nut clamping member
    • H01R4/308—Conductive members located parallel to axis of screw

Definitions

  • the present invention relates to a pressure transmission element for an electrical connecting terminal for connecting electrical conductors parallel to the axis of a clamping screw, in which the clamping screw is directed to a pressure leg of the L-shaped pressure transmission element, while an end face of a clamping leg is directed against the electrical conductor and the clamping leg is rotatably connected to a terminal body by means of a pivot.
  • the starting point is a clamping device as described in German utility model 75 33 712.
  • the pressure transmission element used there is quite complex to manufacture, since the parts either have to be punched from the full material thickness and additional breakpoints have to be turned on, or require complicated bending processes.
  • the object of the present invention is to provide a pressure transmission element which can be manufactured more easily and more cost-effectively and nevertheless reliably fulfills its function.
  • a pressure transmission element which is characterized in that the pressure transmission element consists of two symmetrical flat halves, which have symmetrically arranged features as the pivot point, which come to lie in mutual alignment with one another as soon as the flat halves on one another in the final phase are aligned.
  • Both parts can be made of thin material and are easy to punch.
  • After folding, both parts can be connected to one another on the superimposed surfaces by, for example, riveting, welding, pinning, embossing, gluing or the like.
  • the front side next to the breakpoints provides the clamping surface for the conductor.
  • the connecting terminal 10 consists of a terminal body 14, into which a clamping screw 16 is screwed by means of a thread.
  • This clamping screw 16 exerts pressure on a pressure leg 30 of the pressure transmission element 12, which transmits the pressure via a clamping leg 34 to an electrical conductor 18 to be clamped.
  • the conductor 18 is thereby clamped between the pressure transmission element 12 and a side wall 20 of the clamp body 14.
  • an electrically conductive plate or layer 22 can also be inserted between the side wall 20 and the conductor 18. This is necessary if the terminal body 14 is otherwise made of electrically non-conductive material.
  • the pressure transmission element 12 As shown in FIG. 2, the pressure transmission element 12 according to the invention consists of two symmetrical halves 24 and 26. Two areas 28 are pressed out of the pressure transmission element made of sheet metal, for example. Then the symmetrical halves 24 and 26 are congruent folded up and connected to each other, for example by riveting, welding, pinning, embossing or gluing. The resultant finished pressure transmission element 12 is shown in FIGS. 3 to 5 in different views.
  • the pressure transmission element can also be composed of two separate symmetrical halves 24 and 26.
  • the forms 28 form projections which serve as holding points for the movable suspension of the pressure transmission element 12 in the clamp body 14.
  • the breakpoints 28 can also be pushed out obliquely, as is clear from FIG. 6. This results in a higher strength of the pressure transmission element 12.
  • the pressure transmission element can be made of different materials, including materials that are not electrically conductive.
  • connection area between the two halves 24, 26 is designed as a pressure surface 30a for the clamping screw 16. So that it cannot slide to the side, the pressure surface is at least flat, but is preferably designed as a recessed centering surface.
  • the cross-sectional area of the pressure transmission element can also have a different outer shape than the shape shown in the drawings.
  • the pressure transmission element designed according to the invention is easier and cheaper to manufacture than the pressure transmission elements used hitherto.

Landscapes

  • Connections By Means Of Piercing Elements, Nuts, Or Screws (AREA)

Abstract

The invention relates to an electrical connection terminal (10) for the connection of electrical conductors (18) parallel to the axis of a terminal screw (16). An L-shaped pressure transmitting element (12), by means of which the clamping force of the terminal screw (16) is transmitted to a terminal limb (34), consists according to the invention of two symmetrical, flat halves (24, 26) which have cut-outs (28) arranged symmetrically with respect to one another, as a centre of rotation. The two flat halves (24, 26) are aligned to one another in the final phase in order to form the pressure transmitting element (12). <IMAGE>

Description

Die vorliegende Erfindung betrifft ein Druckübertra­gungselement für eine elektrische Anschlußklemme zum Anschluß elektrischer Leiter parallel zur Achse einer Klemmschraube, bei welcher die Klemmschraube auf einen Druckschenkel des L-förmig ausgebildeten Druckübertragungselements gerichtet ist, während eine Stirnseite eines Klemmschenkels gegen den elek­trischen Leiter gerichtet ist und der Klemmschenkel mittels eines Drehpunkts mit einem Klemmenkörper drehbar verbunden ist.The present invention relates to a pressure transmission element for an electrical connecting terminal for connecting electrical conductors parallel to the axis of a clamping screw, in which the clamping screw is directed to a pressure leg of the L-shaped pressure transmission element, while an end face of a clamping leg is directed against the electrical conductor and the clamping leg is rotatably connected to a terminal body by means of a pivot.

Um Leiter auf möglichst kleinem Raum anklemmen zu können, wird es immer häufiger gewünscht, die Leiter­einführung parallel zur Klemmschraubenachse vorzu­sehen. Bei derartigen Konstruktionen können mehrere gegenüberliegende Klemmvorrichtungen ohne großen Ab­stand zueinander montiert werden, da der Platzbedarf der anzuschließenden Leiter wesentlich geringer ist als bei Konstruktionen, bei denen die Leiterein­führung der Klemmen um 90° zur Klemmschraubenachse versetzt angeordnet ist.In order to be able to connect conductors in the smallest possible space, it is increasingly desired to provide the conductor entry parallel to the clamping screw axis. In such constructions, several opposing clamping devices can be mounted without a large distance from one another, since the space required for the conductors to be connected is significantly less than in constructions in which the conductor insertion of the clamps is offset by 90 ° to the clamping screw axis.

Ausgegangen wird von einer Klemmvorrichtung, wie sie im deutschen Gebrauchsmuster 75 33 712 beschrieben ist. Das dort verwendete Druckübertragungselement ist recht aufwendig in der Herstellung, da die Teile entweder aus der vollen Materialstärke gestanzt und zusätzlich Haltepunkte angedreht werden müssen, oder komplizierte Biegevorgänge erfordern.The starting point is a clamping device as described in German utility model 75 33 712. The pressure transmission element used there is quite complex to manufacture, since the parts either have to be punched from the full material thickness and additional breakpoints have to be turned on, or require complicated bending processes.

Die Aufgabe der vorliegenden Erfindung besteht darin, ein Druckübertragungselement anzugeben, das einfacher und kostengünstiger hergestellt werden kann und dennoch zuverlässig seine Funktion erfüllt.The object of the present invention is to provide a pressure transmission element which can be manufactured more easily and more cost-effectively and nevertheless reliably fulfills its function.

Die Aufgabe wird allgemein durch ein Druckübertra­gungselement gelöst, das dadurch gekennzeichnet ist, daß das Druckübertragungselement aus zwei symme­trischen flachen Hälften besteht, welche symmetrisch zueinander angeordnete Ausprägungen als Drehpunkt aufweisen, die in gegenseitiger Ausfluchtung zuein­ander zu liegen kommen, sobald in der Endphase die flachen Hälften aufeinander ausgerichtet sind.The object is generally achieved by a pressure transmission element, which is characterized in that the pressure transmission element consists of two symmetrical flat halves, which have symmetrically arranged features as the pivot point, which come to lie in mutual alignment with one another as soon as the flat halves on one another in the final phase are aligned.

Diese Teile können aus dünnem Material bestehen und lassen sich leicht stanzen. In einem Arbeitsgang lassen sich zunächst zwei Öffnungen herausdrücken, welche später beim Umfalzen um die Symmetrieachse aufeinander zu liegen kommen und als Haltepunkte dienen. Beide Teile können nach dem Umfalzen mitein­ander auf den aufeinanderliegenden Flächen durch beispielsweise Nieten, Schweißen, Verstiften, Prägen, Kleben oder ähnlichem verbunden werden. Die Stirnseite neben den Haltepunkten ergibt die Klemm­fläche für den Leiter.These parts can be made of thin material and are easy to punch. First, two openings can be pressed out in one operation, which later come to lie on top of each other when folded around the axis of symmetry and serve as stopping points. After folding, both parts can be connected to one another on the superimposed surfaces by, for example, riveting, welding, pinning, embossing, gluing or the like. The front side next to the breakpoints provides the clamping surface for the conductor.

Weitere Einzelheiten, Merkmale und Vorteile ergeben sich aus der folgenden Beschreibung eines in der Zeichnung dargestellten Ausführungsbeispiels.Further details, features and advantages result from the following description of an embodiment shown in the drawing.

Es zeigen:

  • Fig. 1 einen schematischen Querschnitt durch eine fertig montierte elektrische An­schlußklemme in Betriebsstellung,
  • Fig. 2 ein Stanzteil in abgewickelter ebener Ausführung für das Druckübertragungs­element vor einem Falzvorgang,
  • Fig. 3 ein gefalztes Druckübertragungselement in Draufsicht,
  • Fig. 4 ein gefalztes Druckübertragungselement in Seitenansicht,
  • Fig. 5 ein gefalztes Druckübertragungselement von der Drahtklemmseite her gesehen, und
  • Fig. 6 eine abgewandelte Ausführungsform des Druckübertragungselements in ähnlicher Ansicht wie Fig. 5.
Show it:
  • 1 shows a schematic cross section through a fully assembled electrical connecting terminal in the operating position,
  • 2 a stamped part in a developed flat design for the pressure transmission element before a folding process,
  • 3 shows a folded pressure transmission element in plan view,
  • 4 a folded pressure transmission element in side view,
  • Fig. 5 seen a folded pressure transmission element from the wire clamp side, and
  • 6 shows a modified embodiment of the pressure transmission element in a view similar to FIG. 5.

Fig. 1 zeigt das erfindungsgemäße Druckübertragungs­element 12 eingebaut in eine elektrische Anschluß­klemme 10. Die Anschlußklemme 10 besteht aus einem Klemmenkörper 14, in den über ein Gewinde eine Klemm­schraube 16 eingeschraubt ist. Diese Klemmschraube 16 übt Druck aus auf einen Druckschenkel 30 des Druckübertragungselements 12, das den Druck über einen Klemmschenkel 34 weitergibt auf einen fest­zuklemmenden elektrischen Leiter 18. Der Leiter 18 wird dadurch zwischen dem Druckübertragungselement 12 und einer Seitenwand 20 des Klemmenkörpers 14 eingeklemmt. Zur besseren Weiterleitung des elek­trischen Stroms kann zwischen Seitenwand 20 und Leiter 18 noch eine elektrisch leitende Platte oder Schicht 22 eingefügt werden. Dies ist dann not­wendig, wenn der Klemmenkörper 14 ansonsten aus elektrisch nichtleitendem Material besteht.1 shows the pressure transmission element 12 according to the invention installed in an electrical connecting terminal 10. The connecting terminal 10 consists of a terminal body 14, into which a clamping screw 16 is screwed by means of a thread. This clamping screw 16 exerts pressure on a pressure leg 30 of the pressure transmission element 12, which transmits the pressure via a clamping leg 34 to an electrical conductor 18 to be clamped. The conductor 18 is thereby clamped between the pressure transmission element 12 and a side wall 20 of the clamp body 14. For better transmission of the electrical current, an electrically conductive plate or layer 22 can also be inserted between the side wall 20 and the conductor 18. This is necessary if the terminal body 14 is otherwise made of electrically non-conductive material.

Wie Fig. 2 zeigt, besteht das erfindungsgemäße Druck­übertragungselement 12 aus zwei symmetrischen Hälften 24 und 26. Aus dem beispielsweise aus Blech hergestelltem Druckübertragungselement werden zwei Bereiche 28 herausgedrückt. Anschließend werden die symmetrischen Hälften 24 und 26 deckungsgleich aufeinandergeklappt und miteinander verbunden, bei­spielsweise durch Nieten, Schweißen, Verstiften, Prägen oder Kleben. Das dadurch entstehende fertige Druckübertragungselement 12 zeigen die Fig. 3 bis 5 in verschiedenen Ansichten. Das Druckübertragungs­element kann auch aus zwei getrennten symmetrischen Hälften 24 und 26 zusammengesetzt sein. Die Ausprä­gungen 28 bilden Vorsprünge, die als Haltepunkte für die bewegliche Aufhängung des Druckübertragungs­elements 12 in dem Klemmenkörper 14 dienen. Die Haltepunkte 28 können auch schräg herausgedrückt werden, wie dies aus Fig. 6 deutlich wird. Dies bewirkt eine höhere Festigkeit des Druckübertragungs­elements 12. Das Druckübertragungselement kann aus verschiedenen Materialien hergestellt sein, auch aus Materialien, die elektrisch nicht leitend sind.As shown in FIG. 2, the pressure transmission element 12 according to the invention consists of two symmetrical halves 24 and 26. Two areas 28 are pressed out of the pressure transmission element made of sheet metal, for example. Then the symmetrical halves 24 and 26 are congruent folded up and connected to each other, for example by riveting, welding, pinning, embossing or gluing. The resultant finished pressure transmission element 12 is shown in FIGS. 3 to 5 in different views. The pressure transmission element can also be composed of two separate symmetrical halves 24 and 26. The forms 28 form projections which serve as holding points for the movable suspension of the pressure transmission element 12 in the clamp body 14. The breakpoints 28 can also be pushed out obliquely, as is clear from FIG. 6. This results in a higher strength of the pressure transmission element 12. The pressure transmission element can be made of different materials, including materials that are not electrically conductive.

Der Verbindungsbereich zwischen den beiden Hälften 24, 26 ist als Druckfläche 30a für die Klemmschraube 16 ausgebildet. Damit diese nicht zur Seite ab­gleiten kann, ist die Druckfläche zumindest eben, vorzugsweise jedoch als vertiefte Zentrierfläche ausgebildet.The connection area between the two halves 24, 26 is designed as a pressure surface 30a for the clamping screw 16. So that it cannot slide to the side, the pressure surface is at least flat, but is preferably designed as a recessed centering surface.

Die Querschnittsfläche des Druckübertragungselements kann im einzelnen auch eine andere äußere Form auf­weisen als die Form, die in den Zeichnungen dargestellt ist.The cross-sectional area of the pressure transmission element can also have a different outer shape than the shape shown in the drawings.

Das erfindungsgemäß ausgebildete Druckübertragungs­element ist einfacher und kostengünstiger herzu­stellen als die bisher verwendeten Druckübertragungs­elemente.The pressure transmission element designed according to the invention is easier and cheaper to manufacture than the pressure transmission elements used hitherto.

Claims (7)

1. Druckübertragungselement (12) für eine elek­trische Anschlußklemme (10) zum Anschluß elek­trischer Leiter parallel zur Achse einer Klemm­schraube (16), bei welcher die Klemmschraube (16) auf einen Druckschenkel (30) des L-förmig ausgebil­deten Druckübertragungselements (12) gerichtet ist, während eine Stirnseite eines Klemmschenkels (34) gegen den elektrischen Leiter (18) gerichtet ist und der Klemmschenkel (34) mittels eines Drehpunkts (36) mit einem Klemmenkörper (14) drehbar verbunden ist. dadurch gekennzeichnet ist, daß das Druckübertra­gungselement (12) aus zwei symmetrischen flachen Hälften (24, 26) besteht, welche symmetrisch zuein­ander angeordnete Ausprägungen (28) als Drehpunkt (36) aufweisen, die in gegenseitiger Ausfluchtung zueinander zu liegen kommen, sobald in der Endphase die flachen Hälften (24, 26) aufeinander ausge­richtet sind.1. Pressure transmission element (12) for an electrical connection terminal (10) for connecting electrical conductors parallel to the axis of a clamping screw (16), in which the clamping screw (16) is directed onto a pressure leg (30) of the L-shaped pressure transmission element (12) , while an end face of a clamping leg (34) is directed against the electrical conductor (18) and the clamping leg (34) is rotatably connected to a terminal body (14) by means of a pivot point (36). characterized in that the pressure transmission element (12) consists of two symmetrical flat halves (24, 26), which have symmetrically arranged features (28) as the fulcrum (36), which come into mutual alignment as soon as in the final phase the flat halves (24, 26) are aligned. 2. Druckübertragungselement nach Anspruch 1,
dadurch gekennzeichnet, daß die zwei symmetrischen flachen Hälften aus zwei Teilen (24 und 26) bestehen.2. Pressure transmission element according to claim 1,
characterized in that the two symmetrical flat halves consist of two parts (24 and 26). 3. Druckübertragungselement nach Anspruch 1,
dadurch gekennzeichnet, daß die flachen Hälften um eine Symmetrieachse zusammenhängen und so nach Faltung um die Symmetrieachse ein einziges Teil bilden.3. Pressure transmission element according to claim 1,
characterized in that the flat halves are connected around an axis of symmetry and thus form a single part after folding around the axis of symmetry. 4. Druckübertragungselement nach einem der Ansprüche 1 bis 3,
dadurch gekennzeichnet, daß die beiden Ausprägungen (28) rechtwinklig aus der Oberfläche des Drucküber­tragungselements hervorstehen.4. Pressure transmission element according to one of claims 1 to 3,
characterized in that the two forms (28) protrude at right angles from the surface of the pressure transmission element. 5. Druckübertragungselement nach einem der Ansprüche 1 bis 3,
dadurch gekennzeichnet, daß die beiden Ausprägungen spitzwinklig aus der Oberfläche des Druckübertra­gungselements hervorstehen.5. Pressure transmission element according to one of claims 1 to 3,
characterized in that the two forms protrude at an acute angle from the surface of the pressure transmission element. 6. Druckübertragungselement nach Anspruch 1 oder 2,
dadurch gekennzeichnet, daß die beiden symmetrischen Hälften (24, 26) durch Nieten, Schweißen, Ver­stiften, Prägen oder Kleben zusammengehalten sind.6. Pressure transmission element according to claim 1 or 2,
characterized in that the two symmetrical halves (24, 26) are held together by riveting, welding, pinning, stamping or gluing. 7. Druckübertragungselement nach einem der vorstehenden Ansprüche,
dadurch gekennzeichnet, daß der Verbindungsbereich zwischen den beiden Hälften (24, 26) als vertiefte Zentrierfläche (30a) für die Klemmschraube (16) ausgebildet ist.7. Pressure transmission element according to one of the preceding claims,
characterized in that the connection area between the two halves (24, 26) is designed as a recessed centering surface (30a) for the clamping screw (16).
EP90117800A 1989-09-20 1990-09-15 Pressure transmitting element for a terminal Withdrawn EP0418766A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE8911218U DE8911218U1 (en) 1989-09-20 1989-09-20
DE8911218U 1989-09-20

Publications (1)

Publication Number Publication Date
EP0418766A1 true EP0418766A1 (en) 1991-03-27

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ID=6843027

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90117800A Withdrawn EP0418766A1 (en) 1989-09-20 1990-09-15 Pressure transmitting element for a terminal

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EP (1) EP0418766A1 (en)
DE (1) DE8911218U1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999065119A2 (en) * 1998-06-08 1999-12-16 Siemens Aktiengesellschaft Terminal
EP1033785A1 (en) * 1999-03-01 2000-09-06 Hiquel-Elektronik- und Anglagenbau Gesellschaft M.B.H. Clamping device for the electrical connection of cables
CN107851909A (en) * 2015-07-16 2018-03-27 赛峰电气与电源公司 Defend the arrangements of electric connection of the energy free shift of F. O. D

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19635135C1 (en) * 1996-08-30 1998-01-15 Weidmueller Interface Device for clamping electrical conductor
DE29902870U1 (en) * 1999-02-18 1999-07-01 Weidmueller Interface Clamping device for connecting electrical conductors
DE102014103826A1 (en) 2014-03-20 2015-09-24 Harting Electric Gmbh & Co. Kg Parallel screw connection

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE944672C (en) * 1953-10-15 1956-06-21 Otto Nathow Terminal block for electrical junction boxes
US4077696A (en) * 1976-04-26 1978-03-07 Hego Electric Gmbh Electrical terminal
DE3719483A1 (en) * 1987-06-11 1988-12-22 Hoelscher Heinrich Tech Buero Screw terminal for the connection of electrical cables (lines, leads)

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE675422C (en) * 1934-08-15 1939-05-09 Stotz Kontakt Gmbh Arrangement for connecting the lines of electrical installation equipment

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE944672C (en) * 1953-10-15 1956-06-21 Otto Nathow Terminal block for electrical junction boxes
US4077696A (en) * 1976-04-26 1978-03-07 Hego Electric Gmbh Electrical terminal
DE3719483A1 (en) * 1987-06-11 1988-12-22 Hoelscher Heinrich Tech Buero Screw terminal for the connection of electrical cables (lines, leads)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999065119A2 (en) * 1998-06-08 1999-12-16 Siemens Aktiengesellschaft Terminal
WO1999065119A3 (en) * 1998-06-08 2000-04-27 Siemens Ag Terminal
EP1033785A1 (en) * 1999-03-01 2000-09-06 Hiquel-Elektronik- und Anglagenbau Gesellschaft M.B.H. Clamping device for the electrical connection of cables
CN107851909A (en) * 2015-07-16 2018-03-27 赛峰电气与电源公司 Defend the arrangements of electric connection of the energy free shift of F. O. D

Also Published As

Publication number Publication date
DE8911218U1 (en) 1989-11-09

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