EP0890801B1 - Closure mechanism - Google Patents

Closure mechanism Download PDF

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Publication number
EP0890801B1
EP0890801B1 EP98111948A EP98111948A EP0890801B1 EP 0890801 B1 EP0890801 B1 EP 0890801B1 EP 98111948 A EP98111948 A EP 98111948A EP 98111948 A EP98111948 A EP 98111948A EP 0890801 B1 EP0890801 B1 EP 0890801B1
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EP
European Patent Office
Prior art keywords
closure
elastic body
closed
frame opening
mechanism according
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP98111948A
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German (de)
French (fr)
Other versions
EP0890801A2 (en
EP0890801A3 (en
Inventor
Fritz Sträter
Uwe Sträter
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.)
NOVUS STRAETER GMBH
Original Assignee
Novus Strater GmbH
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 Novus Strater GmbH filed Critical Novus Strater GmbH
Publication of EP0890801A2 publication Critical patent/EP0890801A2/en
Publication of EP0890801A3 publication Critical patent/EP0890801A3/en
Application granted granted Critical
Publication of EP0890801B1 publication Critical patent/EP0890801B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/02—Ducting arrangements
    • F24F13/06—Outlets for directing or distributing air into rooms or spaces, e.g. ceiling air diffuser
    • F24F13/062—Outlets for directing or distributing air into rooms or spaces, e.g. ceiling air diffuser having one or more bowls or cones diverging in the flow direction

Definitions

  • the present invention relates to a locking mechanism, in particular for a fan closure of an interior fan, consisting of a frame element with a frame opening, a closure flap with a closure path between an open and a closed state and at least one elastic Body, which at its to the middle of the frame opening to be closed directed end is firmly mounted on the frame opening, on this opposite end is positively guided and fastened to the closure cap, and its vertical distance between the two ends in the open state of the Closure flap is larger than the closure path, so that the elastic body Force in the direction of the closure path from a dimensionally stable state after exceeding one dimensionally unstable state into a second dimensionally stable Condition passes, the closure flap being opened when the shape is stable and in the other dimensionally stable state, the closure flap is closed.
  • the invention is based on the object of having a locking mechanism as few parts as possible and inexpensively in the simplest possible way realize.
  • the object is achieved in that the elastic body in closing state simultaneously seals the frame opening to be closed
  • the elastic Body has a rotationally symmetrical shape, and a concentric mounting edge has, with which it on a fastening piece of a frame element is attached.
  • the elastic body also has a special advantage outer retaining edge to a cover plate in a particularly simple manner with the to connect elastic body. This enables the locking mechanism to move out only three parts, the elastic body itself, the cover plate and the Frame element to manufacture.
  • the cover plate serves to stabilize the closure flap and design purposes and possibly as a handle on one manual operation.
  • the elastic body is advantageously in cross section hyperboloid-shaped and has to be closed at its center End opposite the frame opening rounding in the direction of the closure path. This shortens the shutter travel and the transition from that one dimensionally stable state over the dimensionally unstable state to the second Dimensionally stable condition facilitated.
  • This shape also corresponds to a streamlined shape Design with particularly little air turbulence due to the Lock mechanism occur.
  • Another advantage is the elastic body Made of elastomer plastic so that it is particularly simple and inexpensive is to be produced.
  • a locking mechanism is set, in particular a fan closure, from a frame element 1 and one Flap 2 together.
  • the frame element 1 consists of, for example rectangular mounting frame 3, which is particularly round Frame opening 4 is provided, and a round attachment piece in particular 6, which by means of, for example, three holding struts 7 on the mounting frame 3 is attached.
  • the closure flap 2 consists of a preferably round one Cover plate 8 and an in particular hyperboloid-shaped elastic body 9, which is made of elastomer plastic for a special advantage.
  • the elastic Body 9 preferably has a circular cross section of the elastic body, central opening 11 and a circular in cross section of the elastic body inner mounting edge 12, by means of which it is attached to the mounting piece 6 of the Frame element 1 is attached.
  • the elastic body 9 also has an outer circular holding edge 13 with which the cover plate 8 on the elastic body 9 is attached.
  • a locking mechanism is in the closed state the flap 2 shown, in which the cover plate 8, the frame opening 4th closes.
  • FIG. 3 an elastic body is shown.
  • the outside, in the cross section of the elastic body circular holding edge 13 is used advantageously How to attach the cover plate 8.
  • the cover plate 8 stabilizes the Positive guidance of the connected end of the elastic body 9, which by the rotationally symmetrical design of the elastic body 9 is caused.
  • the wall of the elastic body 9 is hyperboloid-shaped designed, at the outer end of the hyperboloid-shaped area Rounding in the direction of the closure path X, to which the holding edge 13th the cover plate 8 connects. At the inner end of the hyperboloid area is followed by the fastening edge 12 with which the elastic body 9 on the Fastening nozzle 6 is attached.
  • FIG. 5 shows a longitudinal section of an elastic body 9 in his second, after acting in the direction of the closure path X sufficiently large force, stable shape.
  • the shape of the elastic body is approximately inverse to the shape of Fig. 4, with between the inner end of the in 4 hyperboloid-shaped area and the attachment edge 12 a kink occurs.
  • the elastic body of the Locking mechanism also consist of a flexible and elastic metal.
  • Another form of the elastic body is also possible, in which the Transfer from a dimensionally stable position to another dimensionally stable position Takes place.
  • the elastic body is a curved, flexible metal strip mentioned, the one-sided fixed storage and other positively driven Storage and with sufficient closure path in the opposite curvature turns.
  • the locking mechanism would also be in the form of a tilting mechanism conceivable, in which the closure path is arcuate.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Air-Flow Control Members (AREA)
  • Holders For Apparel And Elements Relating To Apparel (AREA)
  • Switches With Compound Operations (AREA)
  • Pens And Brushes (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Description

Die vorliegende Erfindung betrifft einen Verschlußmechanismus, insbesondere für einen Lüfterverschluß eines Innenraumlüfters, bestehend aus einem Rahmenelement mit einer Rahmenöffnung, einer Verschlußklappe mit einem Verschlußweg zwischen einem offenen und einem geschlossenen Zustand und mindestens einem elastischen Körper, welcher an seinem zur Mitte der zu verschließenden Rahmenöffnung gerichteten Ende an der Rahmenöffnung fest gelagert ist, an seinem diesem gegenüberliegenden Ende an der Verschlußkappe zwangsgeführt und befestigt ist, und dessen senkrechter Abstand der beiden Enden im geöffneten Zustand der Verschlußklappe größer ist als der Verschlußweg, so dass der elastische Körper bei Krafteinwirkung in Richtung des Verschlußweges von einem formstabilen Zustand nach Überschreitung eines forminstabilen Zustandes in einen zweiten formstabilen Zustand übergeht, wobei bei einem formstabilen Zustand die Verschlußklappe geöffnet und bei dem anderen formstabilen Zustand die Verschlußklappe geschlossen ist.The present invention relates to a locking mechanism, in particular for a fan closure of an interior fan, consisting of a frame element with a frame opening, a closure flap with a closure path between an open and a closed state and at least one elastic Body, which at its to the middle of the frame opening to be closed directed end is firmly mounted on the frame opening, on this opposite end is positively guided and fastened to the closure cap, and its vertical distance between the two ends in the open state of the Closure flap is larger than the closure path, so that the elastic body Force in the direction of the closure path from a dimensionally stable state after exceeding one dimensionally unstable state into a second dimensionally stable Condition passes, the closure flap being opened when the shape is stable and in the other dimensionally stable state, the closure flap is closed.

Aus der Druckschrift DE 2705889 A ist ein Verschlußmechanismus der eingangs genannten Art bekannt, der drei Blattfedern als elastische Elemente aufweist, die sich an einem Ende in der Mitte einer Rahmenöffnung an einem Lagerring abstützen und an ihrem anderen Ende Bolzen aufweisen, die in Schenkeln von an einer Verschlußkappe angeordneten Winkelprofilen über Langlöcher geführt sind. Um die Rahmenöffnung abzudichten, ist an der Verschlußkappe eine umfänglich angeordnete Dichtungslippe vorhanden, die an einem Umfangsflansch im geschlossenen Zustand anliegt. From the document DE 2705889 A is a locking mechanism at the beginning known type known, which has three leaf springs as elastic elements, which support at one end in the middle of a frame opening on a bearing ring and have at its other end bolts which are in the legs of one Closure cap arranged angle profiles are guided over elongated holes. To the Sealing the frame opening is a circumferentially arranged on the closure cap Sealing lip present on a peripheral flange when closed is applied.

Der Erfindung liegt die Aufgabe zu Grunde, einen Verschlußmechanismus mit möglichst wenigen Teilen und auf möglichst einfache Art kostengünstig zu verwirklichen.The invention is based on the object of having a locking mechanism as few parts as possible and inexpensively in the simplest possible way realize.

Der aus der DE 2 705 889 bekannte Mechanismus ist konstruktiv aufwändig und somit teuer.The mechanism known from DE 2 705 889 is structurally complex and therefore expensive.

Erfindungsgemäß wird die Aufgabe dadurch gelöst, dass der elastische Körper im schließenden Zustand gleichzeitig die zu verschließende Rahmenöffnung abdichtetAccording to the invention the object is achieved in that the elastic body in closing state simultaneously seals the frame opening to be closed

Er ist so geformt und positioniert, dass er beim Schließen gleichzeitig als Dichtung zwischen Rahmenöffnung und Abdeckplatte dientIt is shaped and positioned so that when it is closed it also acts as a seal between the frame opening and cover plate

Durch den oben beschriebenen Mechanismus wird eine Selbstfixierung des elastischen Körpers in dem jeweiligen formstabilen Zustand erreicht, wobei eine Abdichtung in einfacher Weise erreicht wird. Somit sind keine zusätzlichen Arretierungs- und Dichtungsmittel nötig. Dabei ist es von Vorteil, wenn der elastische Körper eine rotationsymmetrische Form besitzt, und einen konzentrischen Befestigungsrand aufweist, mit dem er an einem Befestigungsstutzen eines Rahmenelements befestigt wird. Zum besonderen Vorteil besitzt der elastische Körper zusätzlich einen äußeren Halterand, um eine Abdeckplatte auf besonders einfache Weise mit dem elastischen Körper zu verbinden. Dies ermöglicht den Verschlußmechanismus aus lediglich drei Teilen, dem elastischen Körper selbst, der Abdeckplatte und dem Rahmenelement, zu fertigen. Dabei dient die Abdeckplatte der Verschlußklappe stabilisierenden und gestalterischen Zwecken und unter Umständen als Griff bei einer manuellen Betätigung. Vorteilhafterweise ist der elastische Körper im Querschnitt hyperboloidförmig ausgebildet und hat an seinem zur Mitte der zu verschließenden Rahmenöffnung gegenüberliegenden Ende eine Abrundung in Richtung des Verschlußweges. Dadurch wird der Verschlußweg verkürzt und der Übergang von dem einen formstabilen Zustand über den forminstabilen Zustand zu dem zweiten formstabilen Zustand erleichtert. Außerdem entspricht diese Form einer stromlinienförmigen Gestaltung, bei der besonders wenige Luftverwirbelungen durch den Verschlußmechanismus auftreten. Zum weiteren Vorteil ist der elastische Körper aus Elastomer-Kunststoff gefertigt, damit er besonders einfach und kostengünstig herzustellen ist.A self-fixation of the reached elastic body in the respective dimensionally stable state, one Sealing is achieved in a simple manner. So there are no additional ones Locking and sealing agent necessary. It is advantageous if the elastic Body has a rotationally symmetrical shape, and a concentric mounting edge has, with which it on a fastening piece of a frame element is attached. The elastic body also has a special advantage outer retaining edge to a cover plate in a particularly simple manner with the to connect elastic body. This enables the locking mechanism to move out only three parts, the elastic body itself, the cover plate and the Frame element to manufacture. The cover plate serves to stabilize the closure flap and design purposes and possibly as a handle on one manual operation. The elastic body is advantageously in cross section hyperboloid-shaped and has to be closed at its center End opposite the frame opening rounding in the direction of the closure path. This shortens the shutter travel and the transition from that one dimensionally stable state over the dimensionally unstable state to the second Dimensionally stable condition facilitated. This shape also corresponds to a streamlined shape Design with particularly little air turbulence due to the Lock mechanism occur. Another advantage is the elastic body Made of elastomer plastic so that it is particularly simple and inexpensive is to be produced.

Weitere vorteilhafte Ausführungsformen der Erfindung sind in den Unteransprüchen sowie in der folgenden Beschreibung enthalten.Further advantageous embodiments of the invention are in the Subclaims and included in the following description.

Anhand der Zeichnungen sollen im folgenden die Ausführungsformen der Erfindung beispielhaft näher erläutert werden. Dabei zeigen:

Fig. 1
eine perspektivische Ansicht mit Teilschnitt eines Verschlußmechanismus im offenen Zustand,
Fig. 2
eine perspektivische Ansicht mit Teilschnitt eines Verschlußmechanismus im geschlossenen Zustand,
Fig. 3
eine frontale Ansicht eines elastischen Körpers,
Fig. 4
einen Längsschnitt des elastischen Körpers gemäß Schnittlinie IV - IV in Fig. 3 im stabilen Zustand beim offenen Verschlußmechanismus,
Fig. 5
einen Längsschnitt des elastischen Körpers gemäß Schnittlinie IV -IV in Fig. 3 im stabilen Zustand beim geschlossenen Verschlußmechanismus.
The embodiments of the invention are to be explained in more detail by way of example with reference to the drawings. Show:
Fig. 1
a perspective view with partial section of a locking mechanism in the open state,
Fig. 2
a perspective view with partial section of a locking mechanism in the closed state,
Fig. 3
a frontal view of an elastic body,
Fig. 4
3 shows a longitudinal section of the elastic body according to section line IV-IV in FIG. 3 in the stable state with the closure mechanism open,
Fig. 5
a longitudinal section of the elastic body according to section line IV -IV in Fig. 3 in the stable state with the closed locking mechanism.

Wie in Fig. 1 ersichtlich ist, setzt sich ein Verschlußmechanismus, insbesondere ein Lüfterverschluß, aus einem Rahmenelement 1 und einer Verschlußklappe 2 zusammen. Das Rahmenelement 1 besteht aus einem beispielsweise rechteckigen Einbaurahmen 3, der mit einer insbesondere runden Rahmenöffnung 4 versehenen ist, und einem insbesondere runden Befestigungsstutzen 6, welcher mittels beispielsweise drei Haltestreben 7 an dem Einbaurahmen 3 befestigt ist. Die Verschlußklappe 2 besteht aus einer vorzugsweise runden Abdeckplatte 8 und einem insbesondere hyperboloidförmigen elastischen Körper 9, welcher zum besonderen Vorteil aus Elastomer-Kunststoff besteht. Der elastische Körper 9 hat vorzugsweise eine im Querschnitt des elastischen Körpers kreisförmige, mittige Öffnung 11 und einen im Querschnitt des elastischen Körpers kreisförmigen inneren Befestigungsrand 12, mittels dem er an dem Befestigungsstutzen 6 des Rahmenelements 1 befestigt wird. Außerdem besitzt der elastische Körper 9 zusätzlich einen äußeren kreisförmigen Halterand 13, mit dem die Abdeckplatte 8 an dem elastischen Körper 9 befestigt wird.As can be seen in Fig. 1, a locking mechanism is set, in particular a fan closure, from a frame element 1 and one Flap 2 together. The frame element 1 consists of, for example rectangular mounting frame 3, which is particularly round Frame opening 4 is provided, and a round attachment piece in particular 6, which by means of, for example, three holding struts 7 on the mounting frame 3 is attached. The closure flap 2 consists of a preferably round one Cover plate 8 and an in particular hyperboloid-shaped elastic body 9, which is made of elastomer plastic for a special advantage. The elastic Body 9 preferably has a circular cross section of the elastic body, central opening 11 and a circular in cross section of the elastic body inner mounting edge 12, by means of which it is attached to the mounting piece 6 of the Frame element 1 is attached. In addition, the elastic body 9 also has an outer circular holding edge 13 with which the cover plate 8 on the elastic body 9 is attached.

In Fig. 2 ist ein Verschlußmechanismus im geschlossen Zustand der Verschlußklappe 2 dargestellt, bei dem die Abdeckplatte 8 die Rahmenöffnung 4 verschließt.In Fig. 2 a locking mechanism is in the closed state the flap 2 shown, in which the cover plate 8, the frame opening 4th closes.

In Fig. 3 ist ein elastischer Körper dargestellt. Der außen gelegene, im Querschnitt des elastischen Körpers kreisförmige Halterand 13 dient in vorteilhafter Weise zur Befestigung der Abdeckplatte 8. Die Abdeckplatte 8 stabilisiert die Zwangsführung des angeschlossenen Endes des elastischen Körpers 9, welche durch die rotationssymmetrische Gestaltung des elastischen Körpers 9 hervorgerufen wird.In Fig. 3 an elastic body is shown. The outside, in the cross section of the elastic body circular holding edge 13 is used advantageously How to attach the cover plate 8. The cover plate 8 stabilizes the Positive guidance of the connected end of the elastic body 9, which by the rotationally symmetrical design of the elastic body 9 is caused.

Fig. 4 zeigt einen Längsschnitt eines elastischen Körpers 9 in seinem ursprünglichen, bei der Herstellung erzeugten, formstabilen Zustand. Wie aus dieser Zeichnung ersichtlich, ist die Wandung des elastischen Körpers 9 hyperboloidförmig gestaltet, wobei sich am äußeren Ende des hyperboloidförmigen Bereichs eine Abrundung in Richtung des Verschlußweges X befindet, an die sich der Halterand 13 der Abdeckplatte 8 anschließt. Am inneren Ende des hyperboloidförmigen Bereichs schließt sich der Befestigungsrand 12 an, mit dem der elastische Körper 9 an dem Befestigungsstutzen 6 befestigt wird.4 shows a longitudinal section of an elastic body 9 in its original, dimensionally stable condition created during manufacture. How out this drawing can be seen, the wall of the elastic body 9 is hyperboloid-shaped designed, at the outer end of the hyperboloid-shaped area Rounding in the direction of the closure path X, to which the holding edge 13th the cover plate 8 connects. At the inner end of the hyperboloid area is followed by the fastening edge 12 with which the elastic body 9 on the Fastening nozzle 6 is attached.

Fig. 5 zeigt einen Längsschnitt eines elastischen Körpers 9 in seinem zweiten, nach Einwirkung einer in Richtung des Verschlußweges X wirkenden ausreichend großen Kraft, formstabilen Zustand. Die Form des elastischen Körpers ist annährend invers zu der Form aus Fig. 4, wobei zwischen dem inneren Ende des in Fig.4 hyperboloidförmigen Bereichs und dem Befestigungsrand 12 ein Knick entsteht.5 shows a longitudinal section of an elastic body 9 in his second, after acting in the direction of the closure path X sufficiently large force, stable shape. The shape of the elastic body is approximately inverse to the shape of Fig. 4, with between the inner end of the in 4 hyperboloid-shaped area and the attachment edge 12 a kink occurs.

In einer weiteren Ausführungsform könnte beispielsweise der elastische Körper des Verschlußmechanismus auch aus einem biegsamen und elastischen Metall bestehen. Außerdem ist auch eine andere Form des elastischen Körpers möglich, bei der das Umschlagen von einer formstabilen Position in eine andere formstabile Position Stattfindet. Hier sei insbesondere ein gekrümmter biegsamer Metallstreifen erwähnt, der bei einendiger fester Lagerung und anderendiger zwangsgeführter Lagerung und bei ausreichendem Verschlußweg in die entgegengesetzte Krümmung umschlägt. Der Verschlußmechanismus wäre auch in Form eines Kippmechanismus denkbar, bei dem der Verschlußweg bogenförmig verläuft.In a further embodiment, the elastic body of the Locking mechanism also consist of a flexible and elastic metal. Another form of the elastic body is also possible, in which the Transfer from a dimensionally stable position to another dimensionally stable position Takes place. Here, in particular, is a curved, flexible metal strip mentioned, the one-sided fixed storage and other positively driven Storage and with sufficient closure path in the opposite curvature turns. The locking mechanism would also be in the form of a tilting mechanism conceivable, in which the closure path is arcuate.

Claims (8)

  1. Closure mechanism, in particular for a closure of an interior fan, comprising a frame element having a frame opening (4), a closure flap (2) having a closure pass (X) between an open and a closed state, and at least one elastic body (9) which, at its end directed towards the centre of the frame opening (4) to be closed, is mounted fixedly on the frame opening and, at its end lying opposite the first end, is forcibly guided on and fastened to the closure flap, and the vertical distance between the two ends in the open state of the closure flap is larger than the closure path, so that if a force acts in the direction of the closure path (X), the elastic body (9) is transferred, after a dimensionally unstable state is exceeded, from one dimensionally stable state into a second dimensionally stable state, the closure flap (2) being open in one dimensionally stable state and the closure flap (2) being closed in the other dimensionally stable state, characterized in that in the closing state the elastic body (9) at the same time seals the frame opening (4) which is to be closed.
  2. Closure mechanism according to Claim 1, characterized in that the elastic body (9) has a rotationally symmetrical shape where the end which is directed towards the frame opening (4) to be closed is a region lying in the centre of the body.
  3. Closure mechanism according to either of Claims 1 and 2, characterized in that the elastic body (9) is of hyperboloid-shaped design in cross section.
  4. Closure mechanism according to one of Claims 1 to 3, characterized in that at the end lying opposite the centre of the frame opening (4) to be closed, the elastic body (9) has a rounded-off section in the direction of the closure path (X).
  5. Closure mechanism according to one of Claims 1 to 4, characterized in that at the end directed towards the opening to be closed, the elastic body (9) has a concentric fastening edge (12) for the fastening stub (6) of the frame element (1).
  6. Closure mechanism according to one of Claims 1 to 5, characterized in that at the end lying opposite the centre of the frame opening (4) to be closed, the elastic body (9) has a retaining edge (13) for the closure flap (2).
  7. Closure mechanism according to one of Claims 1 to 6, characterized in that the elastic body (9) is manufactured from elastomeric plastic.
  8. Closure mechanism according to one of Claims 1 to 7, characterized in that the elastic body (9) has a flow-assisting profile on the side lying opposite the frame opening (4).
EP98111948A 1997-07-06 1998-06-29 Closure mechanism Expired - Lifetime EP0890801B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE29711777U 1997-07-06
DE29711777U DE29711777U1 (en) 1997-07-06 1997-07-06 Locking mechanism

Publications (3)

Publication Number Publication Date
EP0890801A2 EP0890801A2 (en) 1999-01-13
EP0890801A3 EP0890801A3 (en) 2000-06-07
EP0890801B1 true EP0890801B1 (en) 2003-03-12

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ID=8042637

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98111948A Expired - Lifetime EP0890801B1 (en) 1997-07-06 1998-06-29 Closure mechanism

Country Status (2)

Country Link
EP (1) EP0890801B1 (en)
DE (2) DE29711777U1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202010010609U1 (en) 2010-07-23 2011-11-03 Mdm Diels Gmbh locking mechanism

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE659955A (en) * 1965-02-19 1965-06-16
FR2129063A5 (en) * 1971-03-12 1972-10-27 Pronal Sa
AT344951B (en) * 1975-08-14 1978-08-25 Obermayr Josef Ing VENTILATION AND DISTRIBUTION DEVICE FOR ROOMS
DE2705889A1 (en) * 1977-02-11 1978-08-17 Schultz Gmbh Aurora Ceiling or wall mounted room ventilator - has cover supported by arms and closed with snap action to form seal
DE4103826C2 (en) * 1991-02-08 1994-01-13 Wilhelm Dipl Ing Rapp Closure device for a pipe
DE4315538C1 (en) * 1993-05-10 1994-11-03 Friedhelm Meyer Heat exchanger, especially cooling device
DE19510502C1 (en) * 1995-03-23 1996-07-11 Ernest P Sukup Odour trap for waste water pipe, esp. rain water pipe

Also Published As

Publication number Publication date
DE29711777U1 (en) 1997-10-23
EP0890801A2 (en) 1999-01-13
EP0890801A3 (en) 2000-06-07
DE59807437D1 (en) 2003-04-17

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