EP0121867A2 - Furniture for transforming a sitting position into a lying position, particularly upholstered furniture - Google Patents

Furniture for transforming a sitting position into a lying position, particularly upholstered furniture Download PDF

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Publication number
EP0121867A2
EP0121867A2 EP84103468A EP84103468A EP0121867A2 EP 0121867 A2 EP0121867 A2 EP 0121867A2 EP 84103468 A EP84103468 A EP 84103468A EP 84103468 A EP84103468 A EP 84103468A EP 0121867 A2 EP0121867 A2 EP 0121867A2
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EP
European Patent Office
Prior art keywords
seat
frame
furniture
furniture according
seat frame
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
EP84103468A
Other languages
German (de)
French (fr)
Other versions
EP0121867A3 (en
EP0121867B1 (en
Inventor
Bertram Welsch
Günther Blauw
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.)
BLAUW, GUENTHER
Original Assignee
ERPO MOEBELWERK BLAUW GmbH
Blauw Guenther
Erpo Moebel W Blauw & Co GmbH
WELSCH ALWIN POLSTERMOEBEL
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 ERPO MOEBELWERK BLAUW GmbH, Blauw Guenther, Erpo Moebel W Blauw & Co GmbH, WELSCH ALWIN POLSTERMOEBEL filed Critical ERPO MOEBELWERK BLAUW GmbH
Priority to AT84103468T priority Critical patent/ATE40273T1/en
Publication of EP0121867A2 publication Critical patent/EP0121867A2/en
Publication of EP0121867A3 publication Critical patent/EP0121867A3/en
Application granted granted Critical
Publication of EP0121867B1 publication Critical patent/EP0121867B1/en
Expired legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C17/00—Sofas; Couches; Beds
    • A47C17/04—Seating furniture, e.g. sofas, couches, settees, or the like, with movable parts changeable to beds; Chair beds
    • A47C17/16—Seating furniture changeable to beds by tilting or pivoting the back-rest
    • A47C17/161—Seating furniture changeable to beds by tilting or pivoting the back-rest with back-rest made of multiple movable cushions
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C17/00—Sofas; Couches; Beds
    • A47C17/04—Seating furniture, e.g. sofas, couches, settees, or the like, with movable parts changeable to beds; Chair beds
    • A47C17/16—Seating furniture changeable to beds by tilting or pivoting the back-rest
    • A47C17/17—Seating furniture changeable to beds by tilting or pivoting the back-rest with coupled movement of back-rest and seat
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C17/00—Sofas; Couches; Beds
    • A47C17/04—Seating furniture, e.g. sofas, couches, settees, or the like, with movable parts changeable to beds; Chair beds
    • A47C17/16—Seating furniture changeable to beds by tilting or pivoting the back-rest
    • A47C17/17—Seating furniture changeable to beds by tilting or pivoting the back-rest with coupled movement of back-rest and seat
    • A47C17/175—Seating furniture changeable to beds by tilting or pivoting the back-rest with coupled movement of back-rest and seat with tilting or lifting seat-back-rest pivot
    • A47C17/1753—Seating furniture changeable to beds by tilting or pivoting the back-rest with coupled movement of back-rest and seat with tilting or lifting seat-back-rest pivot by sliding, e.g. by rollers
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C17/00—Sofas; Couches; Beds
    • A47C17/04—Seating furniture, e.g. sofas, couches, settees, or the like, with movable parts changeable to beds; Chair beds
    • A47C17/16—Seating furniture changeable to beds by tilting or pivoting the back-rest
    • A47C17/17—Seating furniture changeable to beds by tilting or pivoting the back-rest with coupled movement of back-rest and seat
    • A47C17/175—Seating furniture changeable to beds by tilting or pivoting the back-rest with coupled movement of back-rest and seat with tilting or lifting seat-back-rest pivot
    • A47C17/1756—Seating furniture changeable to beds by tilting or pivoting the back-rest with coupled movement of back-rest and seat with tilting or lifting seat-back-rest pivot by pivoted linkages

Definitions

  • the invention relates to furniture which can be transferred from the sitting to the lying position and vice versa, in particular upholstered furniture, such as an armchair, sofa or the like, with a seat part which can be pulled out from the stationary base or base frame in the extended state and forms part of the lying surface.
  • Such furniture can be used both for sitting and lying due to its ability to transform and are becoming increasingly popular. Especially in second homes or holiday apartments, but also in guest rooms or smaller main apartments, these practical pieces of furniture can be found more and more frequently because they are full when the seat part is pushed in represent valuable space-saving seating furniture, but on the other hand can be transformed into a fully-fledged recliner for resting and sleeping by pulling out the seat part.
  • the object of the invention is to improve a piece of furniture specified in the preamble of claim 1 to the extent that easy conversion of the piece of furniture from one form of use to the other is possible without special knowledge being required for this.
  • the mechanism used should be designed in such a way that it does not lead to malfunctions, does not require any major forces and has a long service life.
  • the object of the invention is above all to create a piece of furniture of the type mentioned, which both comfortable sitting in the sitting position 'or. one or more intermediate positions as well as comfortable resting and sleeping in the lying position with a sufficiently large length of the lying surface.
  • a two-part backrest is provided, the two parts of which are connected to one another in an articulated manner, preferably via scissor joints arranged on both sides.
  • the rear backrest part is pivotally attached to the underframe, while the front backrest part is pivotally connected to the seat frame part.
  • This seat frame part forms the cover or the cover of a bed box or a chassis which is supported on a rollable basis and can be pulled out or pushed in from the stationary base frame.
  • the seat frame part is lashed to the bed box or chassis via swivel bracket pairs provided on both sides and constructed in the manner of quadrilaterals.
  • the pivotable articulation of the front backrest part on the seat frame part takes place via latching joints arranged on both sides, which allow the seat frame part to be pivoted upward, but lock in a certain or more specific pivot positions when the seat frame part is pivoted back, so that the front backrest part is now pivoted back by the latched joints is taken and swung up.
  • the seat part can be pushed in without difficulty, the two backrest parts folding up and resulting in the actual backrest in the sitting position.
  • the bed box is also easily accessible so that bedding etc. can be removed easily.
  • the furniture for example in the form of a two-seat sofa, consists of a stationary base frame 2, which is supported on the floor on the feet 1, and a seat part 4, which is supported by rollers or rollers 3 and which, according to double arrow A can be pulled out of or inserted into the base frame 2.
  • the seat part 4 is guided by telescopic rails indicated at 5 in or on the base frame 2.
  • the timber has a two-part backrest 6, whose rear part is pivotally 7 (hinge 8) connected to the base frame 2 and is pivotally connected to the front backrest component 1 0 on both sides arranged scissor joints.
  • Each scissor joint 9 is designed approximately as a double parallelogram and has a symmetrical design.
  • the scissor joints 9 are each articulated with the pivot levers 11 and 12, which are pivotally connected to one another at 13, on the rear part 7 and / or on the front backrest part 10, while the free ends of the pivot levers 11, 12 are connected via coupling links 14 and 15 are articulated on the two backrest parts 7 and 10.
  • the arrangement and design of the scissor joints 9 and the two backrest parts 7 and 1o is made such that the upper edges of the backrest parts 7, 1o are close to each other and remain together when the two parts 1 0 and 7 are pivoted.
  • the scissor joints 9 therefore have a hinge function.
  • the roll-supported seat part 4 consists essentially of a chassis or bed box 16, on the underside of which the rollers 3 are arranged, and a seat frame 17, which at the same time forms a cover or cover for the bed box 16.
  • Both the seat frame 17 as well as the two backrest parts 7 and 1 0 are formed as slats or take a respective slatted on, as shown particularly in Fig. 2 to erken is.
  • the rear backrest part 7, as already mentioned, is pivotally articulated on the underframe 2, the front backrest part 1o is pivotally connected to the seat frame 17. Namely, locking joints 18 are provided on both sides, to which in connection with FIGS. 6 and 7 will be discussed in more detail.
  • the attachment of the seat frame 17 is carried by the bed box 16 via likewise arranged on both sides of the pivot tab pairs 19, 2 0, which are formed in the manner of four-bar linkages, and which will be explained also in more detail in connection with Fig. 6 and 7.
  • upholstery pads 21 are provided on the seat frame 17, the front backrest part 10 and the rear backrest part 7, which are indicated by dash-dotted lines in FIG. 1. Furthermore, both stops are arranged on the base frame 2 as well as on the seat part 4, which come into positive contact with one another one after the other, so that different positions of the furniture - sitting position and at least one intermediate position called the relax position - are locked and fixed.
  • FIG. 4 A lying position in which the two backrest parts 7 and 10 come to lie one behind the other approximately in the plane of the seat frame 17 is shown schematically in FIG. 4. It should also be noted that the rear backrest part 7 is extended downwards beyond the hinge 8, so that in the lying position there is a sufficiently large lying surface with large length dimensions without the seat depth in the sitting position or the height of the backrest being chosen too large must become.
  • the locking joints 18 consist of the two joint parts 22 and 23, which are pivotally connected at 24 and of which the joint part 22 is firmly connected to the seat frame 17 and the joint part 23 is firmly connected to the front backrest part 10 is.
  • a latching rod 26 with latching teeth 27 is pivotally mounted on the hinge part 23.
  • the articulated part 22 carries a locking pin 28 which, with the locking and locking of the two articulated parts 22, 23 and thus the parts 17 and 10, comes into active engagement between the locking teeth 27.
  • the locking rod 26 is still connected to a cover, not shown, which only releases the locking teeth 27 in one pivoting direction according to arrow B in FIG. 6, i.e. during a folding movement in which the seat frame 17 is pivoted toward the front backrest part 1o while in the opposite pivoting direction after the seat frame 17 has been completely raised, the cover is pivoted over the locking teeth, so that the locking pin 28 slides along the locking rod 26.
  • the two swivel brackets 19 and 20 are arranged in such a way that they are inclined towards the front backrest part 10 in the sitting position.
  • the two articulation points 29 and 3o of the swivel brackets 19, 2o on the seat frame 17 lie closer together than the two articulation points 31 and 32 on the bed box 16, so that the two swivel brackets 19, 2o enclose an upward converging angle with one another.
  • the front swing plate 19 is longer than the rear pivot link plate 2 0th
  • the swivel brackets 19 and 2o are expediently articulated directly on the joint part 22 of the latching joint 18, so that they form a unit together with the latching g -link, with a connection running between the pivot points 31 and 32 of the brackets 19, 20o tab 33 is provided.
  • This connecting bracket 33 is fastened to the bed box 16, possibly via a reinforcing strip 34 arranged on the bed box 16.

Abstract

Upholstered furniture for transferring a person between a sitting position and a lying position, in which a seating member can be extracted forward out of a stationary base. The seating member has a chassis that is supported so that it can roll. A seating frame is positioned on top and forms a covering. A backrest has two members connected so that they can be swung relative to each other. The rear backrest member is pivoted on the bottom framework, and the front backrest member is connected to the seating frame by catch linkages.

Description

Die Erfindung betrifft ein von der Sitz- in die Liegeposition und umgekehrt überführbares Möbel, insbesondere Polstermöbel, wie Sessel, Sofa od. dgl., mit nach vorne aus dem stationären Basis- oder Untergestell herausziehbarem, im ausgezogenen Zustand einen Teil der Liegefläche bildendem Sitzteil.The invention relates to furniture which can be transferred from the sitting to the lying position and vice versa, in particular upholstered furniture, such as an armchair, sofa or the like, with a seat part which can be pulled out from the stationary base or base frame in the extended state and forms part of the lying surface.

Derartige Möbel sind aufgrund ihrer Verwandlungsmöglichkeit sowohl zum Sitzen wie auch zum Liegen verwendbar und erfreuen sich zunehmender Beliebtheit. Insbesondere in Zweit- oder Ferienwohnungen, aber auch in Gästezimmern oder kleineren Hauptwohnungen sind diese praktischen Möbel immer häufiger anzutreffen, weil sie im eingeschobenen Zustand des Sitzteils ein vollwertiges platzsparendes Sitzmöbel darstellen, andererseits aber durch Ausziehen des Sitzteils in ein vollwertiges Liegemöbel zum Ruhen und Schlafen verwandelt werden können.Such furniture can be used both for sitting and lying due to its ability to transform and are becoming increasingly popular. Especially in second homes or holiday apartments, but also in guest rooms or smaller main apartments, these practical pieces of furniture can be found more and more frequently because they are full when the seat part is pushed in represent valuable space-saving seating furniture, but on the other hand can be transformed into a fully-fledged recliner for resting and sleeping by pulling out the seat part.

Bekannte Sitz-Liege-Möbel weisen jedoch im allgemeinen verhältnismäßig komplizierte Mechanismen auf, mit deren.Hilfe die Umwandlung des Möbels von der einen in die andere Benutzungsform erfolgt. Meist bedarf es eines erheblichen Kraftaufwands beim Umwandeln des Möbels, es kommt zu einem Verkanten der relativ zueinander verlager- und verschiebbaren Teile oder sogar zu einem Verklemmen. Oft werden zwei Personen benötigt, -um das Umwandeln des Möbels überhaupt bewerkstelligen zu können, wobei noch besondere Kenntnisse der Personen erforderlich sind. Besonders schwierig gestaltet sich das Einschieben des Sitzteils, weil die Schwenkachsen zwischen den einzelnen aneinandergelenkten Teilen in einer Ebene liegen, so daß die Einschiebekraft durch die Schwenkachsen geht und eine Totpunktlage entsteht.Known seat-reclining furniture, however, generally have relatively complicated mechanisms with the aid of which the furniture is converted from one form of use to the other. In most cases, considerable effort is required when converting the furniture, the parts that can be displaced and displaced relative to one another become canted or even jammed. Often two people are required to be able to convert the furniture at all, which requires special knowledge of the people. The insertion of the seat part is particularly difficult because the pivot axes lie between the individual hinged parts in one plane, so that the insertion force passes through the pivot axes and a dead center position occurs.

Die Aufgabe der Erfindung besteht darin, ein Möbel der im Oberbegriff des Anspruches 1 angegebenen Art insoweit zu verbessern, daß eine leichte Umwandlung des Möbels von der einen in die andere Benutzungsform möglich ist, ohne daß besondere Kenntnisse hierfür erforderlich sind. Der verwendete Mechanismus soll derart ausgebildet sein, daß er zu keinen Störungen führt, keine größeren Kräfte erfordert und eine lange Lebens- bzw. Gebrauchsdauer aufweist. Die Aufgabe der Erfindung besteht vor allem auch darin, ein Möbel der eingangs genannten Art zu schaffen, das sowohl ein bequemes Sitzen in der Sitzstellung'bzw. einer oder mehreren Zwischenstellungen als auch ein komfortables Ruhen und Schlafen in der Liegeposition mit genügend großer Länge der Liegefläche erlaubt.The object of the invention is to improve a piece of furniture specified in the preamble of claim 1 to the extent that easy conversion of the piece of furniture from one form of use to the other is possible without special knowledge being required for this. The mechanism used should be designed in such a way that it does not lead to malfunctions, does not require any major forces and has a long service life. The object of the invention is above all to create a piece of furniture of the type mentioned, which both comfortable sitting in the sitting position 'or. one or more intermediate positions as well as comfortable resting and sleeping in the lying position with a sufficiently large length of the lying surface.

Zur Lösung dieser Aufgabe gibt der kennzeichnende Teil des Anspruches 1 Merkmale zur Ausgestaltung der Erfindung an. In den weiteren Ansprüchen sind für die Aufgabenlösung vorteilhafte und förderliche Weiterbildungen beansprucht.To solve this problem, the characterizing part of claim 1 specifies features for the embodiment of the invention. In the further claims, advantageous and beneficial further developments are claimed for the task solution.

Bei der Erfindung ist also eine zweiteilige Rückenlehne vorgesehen, deren beiden Teile gelenkig miteinander verbunden sind, vorzugsweise über beidseitig angeordnete Scherengelenke. Das hintere Rückenlehnenteil ist schwenkbar am Untergestell befestigt, während das vordere Rückenlehnenteil schwenkbar mit dem Sitzrahmenteil verbunden ist. Dieses Sitzrahmenteil bildet die Abdeckung bzw. den Deckel eines Bettkastens oder eines Chassis, der bzw. das rollbar abgestützt ist und aus dem stationären Untergestell herausgezogen bzw. eingeschoben werden kann. Das Sitzrahmenteil ist über beidseitig vorgesehene, in der Art von Gelenkvierecken ausgebildeten Schwenklaschenpaaren am Bettkasten oder Chassis angelascht. Die schwenkbare Anlenkung des vorderen Rückenlehnenteils am Sitzrahmenteil erfolgt über beidseitig angeordnete Rastgelenke, die ein Hochschwenken des Sitzrahmenteils zulassen, in einer bestimmten oder mehreren bestimmten Schwenkstellungen beim Zurückschwenken des Sitzrahmenteils jedoch verrasten, so daß nunmehr durch das Zurückschwenken des Sitzrahmenteils über die verrasteten Gelenke das vordere Rückenlehnenteil mitgenommen und hochgeschwenkt wird. Auf diese Weise läßt sich das Sitzteil ohne Schwierigkeiten einschieben, wobei sich die beiden Rückenlehnenteile zusammenfalten und in der Sitzposition die eigentliche Rückenlehne ergeben. Nach dem Hochschwenken des Sitzrahmenteils ist auch der Bettkasten leicht zugänglich, so daß Bettzeug usw. ohne weiteres entnommen werden kann.In the invention, therefore, a two-part backrest is provided, the two parts of which are connected to one another in an articulated manner, preferably via scissor joints arranged on both sides. The rear backrest part is pivotally attached to the underframe, while the front backrest part is pivotally connected to the seat frame part. This seat frame part forms the cover or the cover of a bed box or a chassis which is supported on a rollable basis and can be pulled out or pushed in from the stationary base frame. The seat frame part is lashed to the bed box or chassis via swivel bracket pairs provided on both sides and constructed in the manner of quadrilaterals. The pivotable articulation of the front backrest part on the seat frame part takes place via latching joints arranged on both sides, which allow the seat frame part to be pivoted upward, but lock in a certain or more specific pivot positions when the seat frame part is pivoted back, so that the front backrest part is now pivoted back by the latched joints is taken and swung up. In this way, the seat part can be pushed in without difficulty, the two backrest parts folding up and resulting in the actual backrest in the sitting position. After swiveling up the seat frame part, the bed box is also easily accessible so that bedding etc. can be removed easily.

Die Erfindung wird nun anhand eines Ausführungsbeispiels im Zusammenhang mit der Zeichnung näher erläutert. Hierbei werden weitere Vorteile und Merkmale der Erfindung deutlich. In der Zeichnung zeigen:

  • Fig. 1 eine schematische seitliche Ansicht des Möbels in einer Zwischenstellung entsprechend einer sog. Relaxstellung,
  • Fig. 2 eine schematische perspektivische Darstellung des Möbels in der Fig. 1 entsprechenden Stellung, verkleinert gezeigt,
  • Fig. 3 eine seitliche schematische Ansicht des Möbels in der Sitzstellung,
  • Fig. 4 eine schematisierte seitliche Darstellung des Möbels in der Liegestellung,
  • Fig. 5 eine Fig. 4 entsprechende Darstellung des Möbels kurz vor bzw. beim Einschieben des Sitzteils,
  • Fig. 6 eine vergrößerte seitliche Darstellung eines Rastgelenks in einer Fig. 1 entsprechenden Stellung und
  • Fig. 7 das Rastgelenk in der Fig. 5 entsprechenden Stellung, wobei Fig. 6 und 7 jeweils abgebrochene Darstellungen zeigen.
The invention will now be explained in more detail using an exemplary embodiment in connection with the drawing. Here, further advantages and features of the invention become clear. The drawing shows:
  • 1 is a schematic side view of the furniture in an intermediate position corresponding to a so-called relax position,
  • 2 is a schematic perspective view of the furniture in the position corresponding to FIG. 1, shown reduced,
  • 3 is a schematic side view of the furniture in the sitting position,
  • 4 is a schematic side view of the furniture in the lying position,
  • 5 shows a representation corresponding to FIG. 4 of the furniture shortly before or when the seat part is pushed in,
  • Fig. 6 is an enlarged side view of a locking joint in a position corresponding to Fig. 1 and
  • FIG. 7 the locking joint in the position corresponding to FIG. 5, FIGS. 6 and 7 each showing broken representations.

Wie insbesondere in den Figuren 1 und 2 zu erkennen ist, besteht das beispielsweise als zweisitziges Sofa ausgebildete Möbel aus einem stationären, am Boden auf den Füßen 1 abgestützten Untergestell 2 und einem rollbar über Rollfüße bzw. Rollen 3 abgestützten Sitzteil 4, das gemäß Doppelpfeil A aus dem Untergestell 2 auszieh- oder in dieseseinschiebbar ist. Das Sitzteil 4 ist durch bei 5 angedeutete Teleskopschienen im bzw. am Untergestell 2 geführt.As can be seen in particular in FIGS. 1 and 2, the furniture, for example in the form of a two-seat sofa, consists of a stationary base frame 2, which is supported on the floor on the feet 1, and a seat part 4, which is supported by rollers or rollers 3 and which, according to double arrow A can be pulled out of or inserted into the base frame 2. The seat part 4 is guided by telescopic rails indicated at 5 in or on the base frame 2.

Das Möbel weist eine zweiteilige Rückenlehne 6 auf, deren hinteres Teil 7 schwenkbar (Scharnier 8) mit dem Untergestell 2 verbunden ist und über beidseitig angeordnete Scherengelenke 9 in Schwenkverbindung mit dem vorderen Rückenlehnenteil 10 steht. Jedes Scherengelenk 9 ist etwa als Doppelparallelogramm gestaltet und weist eine symmetrische Ausbildung auf. Die Scherengelenke 9 sind jeweils mit den Schwenkhebeln 11 bzw. 12, die bei 13 miteinander in Schwenkverbindung stehen, an der hinteren Partie 7 bzw.'an dem vorderen Rückenlehnenteil 1o angelenkt, während die freien Enden der Schwenkhebel 11, 12 über Koppelglieder 14 und 15 an den beiden Lehnenteilen 7 bzw. 1o angelenkt sind. Dabei ist die Anordnung und Ausbildung der Scherengelenke 9 und der beiden Rückenlehnenteile 7 und 1o so getroffen, daß die oberen Ränder der Rückenlehnenteile 7, 1o nahe beieinander liegen und auch beim Verschwenken der beiden Teile 10 und 7 beieinander bleiben. Die Scherengelenke 9 haben also eine Scharnierfunktion.The timber has a two-part backrest 6, whose rear part is pivotally 7 (hinge 8) connected to the base frame 2 and is pivotally connected to the front backrest component 1 0 on both sides arranged scissor joints. 9 Each scissor joint 9 is designed approximately as a double parallelogram and has a symmetrical design. The scissor joints 9 are each articulated with the pivot levers 11 and 12, which are pivotally connected to one another at 13, on the rear part 7 and / or on the front backrest part 10, while the free ends of the pivot levers 11, 12 are connected via coupling links 14 and 15 are articulated on the two backrest parts 7 and 10. The arrangement and design of the scissor joints 9 and the two backrest parts 7 and 1o is made such that the upper edges of the backrest parts 7, 1o are close to each other and remain together when the two parts 1 0 and 7 are pivoted. The scissor joints 9 therefore have a hinge function.

Das rollbar abgestützte Sitzteil 4 besteht im wesentlichen aus einem Chassis oder Bettkasten 16, an dessen Unterseite die Rollen 3 angeordnet sind, und einem Sitzrahmen 17, der gleichzeitig eine Abdeckung bzw. einen Deckel für den Bettkasten 16 bildet. Sowohl der Sitzrahmen 17 wie auch die beiden Rückenlehnenteile 7 und 10 sind als Lattenrost ausgebildet bzw. nehmen jeweils einen Lattenrost auf, wie insbesondere in Fig. 2 zu erkennen ist. Während das hintere Rückenlehnenteil 7, wie bereits angeführt, schwenkbar am Untergestell 2 angelenkt ist, steht das vordere Rückenlehnenteil 1o in Schwenkverbindung mit dem Sitzrahmen 17. Und zwar sind jeweils zu beiden Seiten Rastgelenke 18 vorgesehen, auf die im Zusammenhang mit den Fig. 6 und 7 näher eingegangen werden wird. Die Befestigung des Sitzrahmens 17 am Bettkasten 16 erfolgt über ebenfalls auf beiden Seiten angeordnete Schwenklaschenpaare 19, 20, die in der Art von Gelenkvierecken ausgebildet sind und die gleichfalls im Zusammenhang mit Fig. 6 und 7 näher erläutert werden.The roll-supported seat part 4 consists essentially of a chassis or bed box 16, on the underside of which the rollers 3 are arranged, and a seat frame 17, which at the same time forms a cover or cover for the bed box 16. Both the seat frame 17 as well as the two backrest parts 7 and 1 0 are formed as slats or take a respective slatted on, as shown particularly in Fig. 2 to erken is. While the rear backrest part 7, as already mentioned, is pivotally articulated on the underframe 2, the front backrest part 1o is pivotally connected to the seat frame 17. Namely, locking joints 18 are provided on both sides, to which in connection with FIGS. 6 and 7 will be discussed in more detail. The attachment of the seat frame 17 is carried by the bed box 16 via likewise arranged on both sides of the pivot tab pairs 19, 2 0, which are formed in the manner of four-bar linkages, and which will be explained also in more detail in connection with Fig. 6 and 7.

Auf dem Sitzrahmen 17, dem vorderen Rückenlehnenteil 1o und dem hinteren Rückenlehnenteil 7 sind Polsterauflagen 21 vorgesehen, die in Fig. 1 strichpunktiert angedeutet sind. Weiterhin sind sowohl am Untergestell 2 wie auch am Sitzteil 4 nicht weiter gezeigte Anschläge angeordnet, die nacheinander in formschlüssigen Kontakt miteinander treten, so daß verschiedene Stellungen des Möbels - Sitzstellung sowie wenigstens eine als Relaxstellung bezeichnete Zwischenstellung - arretiert und fixiert sind. Eine Zwischenstellung, bei der das Sitzteil um einen bestimmten Betrag aus dem Untergestell 2 herausgezogen ist, ist in Fig. 1 gezeigt, während die Sitzstellung mit völlig eingeschobenem Sitzteil 4 aus Fig. 3 hervorgeht. In dieser Sitzstellung sind die beiden Rückenlehnenteile 7 und 1o aufgerichtet und liegen etwa Rücken an Rücken. Eine Liegestellung, in der die beiden Rückenlehnenteile 7 und 1o etwa in der Ebene des Sitzrahmens 17 hintereinander zu liegen kommen, ist schematisiert in Fig. 4 gezeigt. Hinzuweisen ist noch darauf, daß das hintere Rückenlehnenteil 7 über das Scharnier 8 hinaus nach unten verlängert ist, so daß sich in der Liegestellung eine genügend große Liegefläche mit großen Längenabmessungen ergibt, ohne daß die Sitztiefe in der Sitzstellung oder die Höhe der Lehne zu groß gewählt werden muß.Upholstery pads 21 are provided on the seat frame 17, the front backrest part 10 and the rear backrest part 7, which are indicated by dash-dotted lines in FIG. 1. Furthermore, both stops are arranged on the base frame 2 as well as on the seat part 4, which come into positive contact with one another one after the other, so that different positions of the furniture - sitting position and at least one intermediate position called the relax position - are locked and fixed. An intermediate position, in which the seat part is pulled out of the base frame 2 by a certain amount, is shown in FIG. 1, while the seat position is shown in FIG. 3 with the seat part 4 fully inserted. In this sitting position, the two backrest parts 7 and 10 are erected and lie approximately back to back. A lying position in which the two backrest parts 7 and 10 come to lie one behind the other approximately in the plane of the seat frame 17 is shown schematically in FIG. 4. It should also be noted that the rear backrest part 7 is extended downwards beyond the hinge 8, so that in the lying position there is a sufficiently large lying surface with large length dimensions without the seat depth in the sitting position or the height of the backrest being chosen too large must become.

Die Rastgelenke 18 bestehen, wie Fig. 6 und 7 zeigen, aus den beiden Gelenkteilen 22 und 23, die schwenkbar bei 24 miteinander verbunden sind und von denen das Gelenkteil 22 fest mit dem Sitzrahmen 17 und das Gelenkteil 23 fest mit dem vorderen Rückenlehnenteil 1o verbunden ist. Zwischen den Gelenkteilen 22, 23 ist eine schwenkbar bei 25 am Gelenkteil 23 gelagerte Raststange 26 mit Rastzähnen 27 angeordnet. Das Gelenkteil 22 trägt einen Rastbolzen 28, der unter Verrastung und Arretierung der beiden Gelenkteile 22, 23 und damit der Teile 17 und 1o in Wirkeingriff zwischen die Rastzähne 27 gelangt. Die Raststange 26 ist noch mit einer nicht weiter gezeigten Abdeckung verbunden, die die Rastzähne 27 nur in der einen Schwenkrichtung gemäß Pfeil B in Fig. 6 freigibt, also bei einer Klappbewegung, bei der der Sitzrahmen 17 zum vorderen Rückenlehnenteil 1o hin verschwenkt wird, während in der entgegengesetzten Schwenkrichtung nach dem vollständigen Hochklappen des Sitzrahmens 17 die Abdeckung über die Rastzähne verschwenkt wird, so daß der Rastbolzen 28 an der Raststange 26 entlanggleitet.6 and 7, the locking joints 18 consist of the two joint parts 22 and 23, which are pivotally connected at 24 and of which the joint part 22 is firmly connected to the seat frame 17 and the joint part 23 is firmly connected to the front backrest part 10 is. Between the hinge parts 22, 23, a latching rod 26 with latching teeth 27 is pivotally mounted on the hinge part 23. The articulated part 22 carries a locking pin 28 which, with the locking and locking of the two articulated parts 22, 23 and thus the parts 17 and 10, comes into active engagement between the locking teeth 27. The locking rod 26 is still connected to a cover, not shown, which only releases the locking teeth 27 in one pivoting direction according to arrow B in FIG. 6, i.e. during a folding movement in which the seat frame 17 is pivoted toward the front backrest part 1o while in the opposite pivoting direction after the seat frame 17 has been completely raised, the cover is pivoted over the locking teeth, so that the locking pin 28 slides along the locking rod 26.

Der Sitzrahmen 17, der gleichzeitig den Deckel für den Bettkasten 16 bildet, ist beidseitig über das Schwenklaschenpaar 19, 2o am Bettkasten 16 angelenkt. Wie in Fig. 6 und 7 deutlich zu erkennen ist, sind die beiden Schwenklaschen 19 und 2o in der Weise angeordnet, daß sie in der Sitzstellung zum vorderen Rückenlehnenteil 1o hin geneigt sind. Die beiden Anlenkpunkte 29 und 3o der Schwenklaschen 19, 2o am Sitzrahmen 17 liegen näher beieinander als die beiden Anlenkpunkte 31 und 32 am Bettkasten 16, so daß die beiden Schwenklaschen 19, 2o miteinander einen nach oben konvergierenden Winkel einschließen. Außerdem ist noch darauf hinzuweisen, daß die vordere Schwenklasche 19 länger ist als die hintere Schwenklasche 20. Zweckmäßigerweise sind die Schwenklaschen 19 und 2o direkt am Gelenkteil 22 des Rastgelenks 18 angelenkt, so daß sie zusammen mit dem Rastge-lenk eine Einheit bilden, wobei noch eine zwischen den Schwenkpunkten 31 und 32 der Laschen 19, 2o verlaufende Verbindungslasche 33 vorgesehen ist. Diese Verbindungslasche 33 wird am Bettkasten 16 befestigt, ggf. über eine am Bettkasten 16 angeordnete Verstärkungsleiste 34. Durch die Ausbildung des Rastgelenks 18 und der zugehörigen Schwenklaschen 19, 2o als Einheit sind also sämtliche Schwenkpunkte weitgehend festgelegt.The seat frame 17, which at the same time forms the cover for the bed box 16, is articulated on both sides via the pair of swivel brackets 19, 20 on the bed box 16. As can be clearly seen in FIGS. 6 and 7, the two swivel brackets 19 and 20 are arranged in such a way that they are inclined towards the front backrest part 10 in the sitting position. The two articulation points 29 and 3o of the swivel brackets 19, 2o on the seat frame 17 lie closer together than the two articulation points 31 and 32 on the bed box 16, so that the two swivel brackets 19, 2o enclose an upward converging angle with one another. In addition, it should be pointed out that the front swing plate 19 is longer than the rear pivot link plate 2 0th The swivel brackets 19 and 2o are expediently articulated directly on the joint part 22 of the latching joint 18, so that they form a unit together with the latching g -link, with a connection running between the pivot points 31 and 32 of the brackets 19, 20o tab 33 is provided. This connecting bracket 33 is fastened to the bed box 16, possibly via a reinforcing strip 34 arranged on the bed box 16. By designing the latching joint 18 and the associated swivel brackets 19, 20 as a unit, all pivot points are largely fixed.

Es sei nun kurz auf die Wirkungsweise des Möbels eingegangen:

  • Durch Herausziehen des Sitzteils 4 nach vorne gemäß Pfeil C in Fig. 3 erfolgt die Überführung des Möbels aus der in Fig. 3 gezeigten Sitzposition über eine in Fig. 1 gezeigte Zwischenstellung in die in Fig. 4 dargestellte Liegeposition, bei der die beiden Rückenrahmenteile 7 und 1o in einer Ebene gestreckt hintereinander liegen und zusammen mit dem etwa in derselben Ebene liegenden Sitzrahmen 17 die Liegefläche bilden. Die beiden Rahmenteile 7 und 1o stoßen dabei praktisch lückenlos aneinander; durch die längere Ausbildung des hinteren Rahmenteils 7 ergibt sich eine genügend große Länge der Liegefläche. Durch Hochschwenken des Sitzrahmens 17 (Pfeil D in Fig. 4) ist das Innere des Bettkastens 16 zugänglich, so daß das Bettzeug usw. entnommen werden kann. Bpi diesem Hochschwenken des Sitzrahmens 17 gleitet der Rastbolzen 28 an den entsprechend geneigten Rastzähnen 27 entlang. In der hochgeschwenkten Position des-Sitzrahmens 17 wird die nicht gezeigte Abdeckung über die Rastzähne verschoben, so daß der Sitzrahmen aus dieser oberen Position ohne weiteres wieder nach unten bis zur Anlage auf dem Bettkasten 16 verschwenkt werden kann. Soll nun das Möbel aus der Liegestellung wieder in die Sitzstellung verbracht werden, so wird der Sitzrahmen 17 gemäß Pfeil D nur um einen bestimmten Winkel angehoben, und zwar bis zu einer ersten Raststufe, bei der der Rastbolzen 28 zwischen zwei Rastzähnen 27 zu liegen kommt. Wird nun der Sitzrahmen 17 aus dieser in Fig. 5 gezeigten Stellung nach unten gemäß Pfeil E verschwenkt, bis er in die strichpunktiert gezeigte Lage gelangt, so wird das vordere Rückenrahmenteil 1o und damit auch das hintere Teil 7 über die hier nicht weiter dargestellten Scherengelenke nach oben verschwenkt, bis sie die in Fig. 5 ebenfalls strichpunktiert dargestellte Lage einnehmen. Gleichzeitig ist der Sitzrahmen 17 durch die Schwenklaschen 19, 2o vom Bettkasten 16 abgehoben (vgl. Fig. 7). In dieser in Fig. 5 strichpunktiert gezeigten Stellung der einzelnen Teile zueinander kann das Sitzteil 4 nun ohne Schwierigkeiten gemäß Pfeil F in das Untergestell 2 eingeschoben werden, wobei die Rückenteil 7 und 1o weiter aufgerichtet werden, bis die Sitzstellung oder eine bzw. mehrere Zwischenstellungen erreicht werden. Die Festlegung der Zwischenstellungen wie auch der Sitzstellung erfolgt durch die nicht weiter gezeigten Anschläge, die durch leichtes Anheben des Sitzrahmens außer Eingriff gebracht werden können.
Let us now briefly look at how the furniture works:
  • By pulling the seat part 4 forward according to arrow C in FIG. 3, the furniture is transferred from the sitting position shown in FIG. 3 via an intermediate position shown in FIG. 1 to the lying position shown in FIG. 4, in which the two back frame parts 7 and 1o are stretched one behind the other in a plane and together with the seat frame 17 lying approximately in the same plane form the lying surface. The two frame parts 7 and 10 abut each other practically without gaps; the longer design of the rear frame part 7 results in a sufficiently large length of the lying surface. By pivoting the seat frame 17 (arrow D in Fig. 4), the interior of the bed box 16 is accessible so that the bedding, etc. can be removed. Bpi this pivoting up of the seat frame 17, the locking bolt 28 slides along the correspondingly inclined locking teeth 27. In the pivoted-up position of the seat frame 17, the cover, not shown, is shifted over the locking teeth, so that the seat frame can be pivoted downwards again from this upper position to rest on the bed box 16. If the furniture is now to be moved from the lying position back to the sitting position, the seat frame 17 is only raised by a certain angle according to arrow D, up to a first latching step at which the latching pin 28 comes to rest between two latching teeth 27. If the seat frame 17 is now pivoted downward from this position shown in FIG. 5 according to arrow E until it reaches the position shown in broken lines, the front back frame becomes Part 1o and thus also the rear part 7 is pivoted upward via the scissor joints, which are not shown here, until they assume the position also shown in broken lines in FIG. 5. At the same time, the seat frame 17 is lifted off the bed box 16 by the swivel brackets 19, 20 (see FIG. 7). In this position of the individual parts shown in dash-dotted lines in FIG. 5, the seat part 4 can now be pushed into the base frame 2 without difficulty according to arrow F, the back parts 7 and 10 being raised further until the seat position or one or more intermediate positions is reached will. The intermediate positions as well as the seated position are determined by the stops, not shown, which can be disengaged by slightly lifting the seat frame.

Claims (12)

1. Von der Sitz- in die Liegeposition und umgekehrt überführbares Möbel, insbesondere Polstermöbel, wie Sessel, Sofa od. dgl., mit nach vorne aus dem stationären Basis- oder Untergestell herausziehbarem, im ausgezogenen Zustand einen Teil der Liegefläche bildendem Sitzteil, dadurch gekennzeichnet, daß das Sitzteil (4) im wesentlichen aus einem rollbar (Rollen 3) abgestützten Chassis bzw. Bettkasten (16) und einem auf dessen Oberseite angeordneten, die Abdeckung bildenden Sitzrahmen (17) und das Rückenteil (6) aus zwei schwenkbar miteinander verbundenen, in der Sitzposition etwa Rücken an Rücken und in der Liegeposition bei ausgezogenem Sitzteil (4) hintereinander in der Lieget, von denen das hintere (7) gelenkig am Untergestell (2) angelenkt und das vordere (10) über beiderseits angeordnete, in der einen Schwenkrichtung einrastende Rastgelenke (18) mit dem Sitzrahmen (17) verbunden ist, während der Sitzrahmen (17) schwenkbar mit dem Chassis bzw. Bettkasten (16) verbunden ist.1. Furniture which can be transferred from the sitting to the lying position and vice versa, in particular upholstered furniture, such as an armchair, sofa or the like, with a seat part which can be pulled out from the stationary base or base frame in the extended state and forms part of the lying surface in the extended state, characterized in that that the seat part (4) essentially consists of a chassis or bed box (16) supported on wheels (rollers 3) and a seat frame (17) arranged on its top, forming the cover, and the back part (6) of two pivotably connected to one another, in the sitting position about back to back and in the lying position with the seat part (4) pulled out one behind the other in the couch, of which the rear (7) is articulated to the underframe (2) and the front (1 0 ) is arranged on both sides, in one Locking joints (18) which engage in the pivoting direction are connected to the seat frame (17), while the seat frame (17) is pivotally connected to the chassis or bed box (16). 2. Möbel nach Anspruch 1, dadurch gekennzeichnet, daß der Sitzrahmen (17) über beiderseits angeordnete, in der Art eines Gelenkvierecks ausgebildete Schwenklaschenpaare (19, 20) am Chassis bzw. Bettkasten (16) angelascht ist.2. Furniture according to claim 1, characterized in that the seat frame (17) is arranged on both sides, formed in the manner of a quadrangular swivel bracket pairs (19, 2 0 ) on the chassis or bed box (16). 3. Möbel nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die beiden Rückenrahmenteile (7, 10) durch beidseitig angeordnete Scherengelenke (9) miteinander verbunden sind, die jeweils als symmetrisches Doppelparallelogramm ausgebildet sind.3. Furniture according to claim 1 or 2, characterized in that the two back frame parts (7, 1 0 ) are connected by scissor joints (9) arranged on both sides, each of which is designed as a symmetrical double parallelogram. 4. Möbel nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß das Sitzteil (4) in Teleskopschienen (5) am Untergestell (2) geführt ist.4. Furniture according to one of claims 1 to 3, characterized in that the seat part (4) is guided in telescopic rails (5) on the base frame (2). 5. Möbel nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß am Untergestell (2) und am Sitzteil (4) bzw. Sitzrahmen (17) formschlüssig ineinandergreifende Anschläge zur Arretierung der Sitzposition und einer oder mehrerer Zwischenstellungen angeordnet sind.5. Furniture according to one of claims 1 to 4, characterized in that on the base frame (2) and on the seat part (4) or seat frame (17) interlocking interlocking stops for locking the sitting position and one or more intermediate positions are arranged. 6. Möbel nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß die Rastgelenke (9) eine beim Zusammenklappen von Sitzrahmen (17) und vorderem Rückenrahmenteil (10) wirksame und beim Auseinanderklappen der beiden Teile (17, 10) aus der hochgeklappten Stellung unwirksame Raststange (26) mit Rastzähnen (27) aufweisen.6. Furniture according to one of claims 1 to 5, characterized in that the latching joints (9) one when folding the seat frame (17) and front back frame part (1 0 ) effective and when unfolding the two parts (17, 1 0 ) from the folded up position have ineffective locking rod (26) with locking teeth (27). 7. Möbel nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß die Rastgelenke (18) wenigstens eine Raststufe aufweisen, bei der der angehobene bzw. hochgeschwenkte Sitzrahmen (17) gegenüber dem vorderen Rückenlehnenteil (10) abgewinkelt und in der anderen Schwenkrichtung arretiert ist und beim Zurückschwenken des Sitzrahmens (17) auf das Chassis bzw. den Bettkasten (16) durch die Verrastung der Rastgelenke (18) der vordere Rückenrahmenteil (lo) um eben diesen Winkel gegenüber dem Untergestell (2) angehoben ist.7. Furniture according to one of claims 1 to 6, characterized in that the locking joints (18) at least one locking step have, in which the raised or swung-up seat frame (17) is angled relative to the front backrest part (10) and locked in the other pivoting direction and when swiveling the seat frame (17) onto the chassis or the bed box (16) by the locking of the Locking joints (18) the front back frame part (lo) is raised by this angle relative to the base frame (2). 8. Möbel nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß die Schwenklaschenpaare (19, 20) jeweils aus einer vorderen längeren Lasche (19) und einer hinteren kürzeren Lasche (20) bestehen, deren Anlenkpunkte (29, 30) am Sitzrahmen (17) näher beieinanderliegen als deren Anlenkpunkte (31, 32) am Chassis bzw. Bettkasten (16).8. Furniture according to one of claims 1 to 7, characterized in that the swivel bracket pairs (19, 2 0 ) each consist of a front longer bracket (19) and a rear shorter bracket (20), the articulation points (29, 3 0 ) on the seat frame (17) lie closer together than their articulation points (31, 32) on the chassis or bed box (16). 9. Möbel nach Anspruch 8, dadurch gekennzeichnet, daß die beiden Laschen (19, 20) in der Sitzposition zum vorderen Rükkenlehnenteil (10) hin geneigt verlaufen und miteinander einen nach oben konvergierenden Winkel einschließen.9. Furniture according to claim 8, characterized in that the two tabs (19, 2 0 ) in the sitting position to the front backrest part (1 0 ) are inclined and enclose an upward converging angle. 10. Möbel nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, daß die Schwenklaschen (19, 20) am mit dem Sitzrahmen (17) verbundenen Gelenkteil (22) des Rastgelenks (18) angelenkt sind und mit dem jeweiligen Rastgelenk (18) eine Einheit bilden, während die freien Enden der Laschen (19, 20) durch eine am Chassis bzw. Bettkasten (16) befestigbare Verbindungslasche (33) miteinander verbunden sind.1 0 . Furniture according to one of claims 1 to 9, characterized in that the swivel brackets (19, 2 0 ) are articulated on the joint part (22) of the latching joint (18) connected to the seat frame (17) and a unit with the respective latching joint (18) form, while the free ends of the tabs (19, 2 0 ) are connected to one another by a connecting bracket (33) which can be fastened to the chassis or bed box (16). 11. Möbel nach einem der Ansprüche 1 bis 10, dadurch gekennzeichnet, daß das hintere Rückenrahmenteil (7) über ein Scharnier (8) mit dem Untergestell (2) verbunden ist.11. Furniture according to one of claims 1 to 1 0 , characterized in that the rear back frame part (7) via a hinge (8) is connected to the base frame (2). 12. Möbel nach einem der Ansprüche 1 bis 11, dadurch gekennzeichnet, daß das hintere Rückenlehnenteil (7) nach unten bzw. hinten verlängert ist.12. Furniture according to one of claims 1 to 11, characterized in that the rear backrest part (7) is extended downwards or backwards.
EP84103468A 1983-04-06 1984-03-29 Furniture for transforming a sitting position into a lying position, particularly upholstered furniture Expired EP0121867B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84103468T ATE40273T1 (en) 1983-04-06 1984-03-29 FURNITURE CONVERTIBLE FROM SITTING TO LYING POSITION, ESPECIALLY UPHOLSTERED FURNITURE.

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE3312371 1983-04-06
DE19838310049U DE8310049U1 (en) 1983-04-06 1983-04-06 MOVABLE FURNITURE FROM THE SEAT TO THE LYING POSITION
DE19833312371 DE3312371A1 (en) 1983-04-06 1983-04-06 MOVABLE FURNITURE FROM THE SEAT TO THE LYING POSITION

Publications (3)

Publication Number Publication Date
EP0121867A2 true EP0121867A2 (en) 1984-10-17
EP0121867A3 EP0121867A3 (en) 1985-09-11
EP0121867B1 EP0121867B1 (en) 1989-01-25

Family

ID=45998694

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84103468A Expired EP0121867B1 (en) 1983-04-06 1984-03-29 Furniture for transforming a sitting position into a lying position, particularly upholstered furniture

Country Status (5)

Country Link
US (1) US4601074A (en)
EP (1) EP0121867B1 (en)
AT (1) ATE40273T1 (en)
CA (1) CA1227906A (en)
DE (3) DE3312371A1 (en)

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Also Published As

Publication number Publication date
EP0121867A3 (en) 1985-09-11
DE3312371A1 (en) 1984-10-18
CA1227906A (en) 1987-10-13
DE3312371C2 (en) 1987-04-23
ATE40273T1 (en) 1989-02-15
DE8310049U1 (en) 1983-12-22
EP0121867B1 (en) 1989-01-25
DE3476327D1 (en) 1989-03-02
US4601074A (en) 1986-07-22

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