DE1245890B

DE1245890B - Foldable plastic weather flute

Info

Publication number: DE1245890B
Application number: DEB29560A
Authority: DE
Inventors: Josef Brand
Original assignee: DIPL BERGING UDO BRAND
Current assignee: DIPL BERGING UDO BRAND
Priority date: 1954-02-05
Filing date: 1954-02-05
Publication date: 1967-08-03

Description

BUNDESREPUBLIK DEUTSCHLANDFEDERAL REPUBLIC OF GERMANY

DEUTSCHESGERMAN

PATENTAMTPATENT OFFICE

AUSLEGESCHRIFTEDITORIAL

Int. CL:Int. CL:

E21fE21f

Deutsche Kl.: 5d-l/06German class: 5d-l / 06

Nummer: 1245 890Number: 1245 890

Aktenzeichen: B 29560 VI a/5 dFile number: B 29560 VI a / 5 d

Anmeldetag: 5. Februar 1954 Filing date: February 5, 1954

Auslegetag: 3. August 1967Opened on August 3, 1967

Die Erfindung betrifft eine faltbare Wetterlutte aus Kunststoff mit einer aus ineinander eingreifenden, durch über ihren Umfang verteilte Spannmittel miteinander abdiohtend verspannten Ringsegmenten bestehenden Verbindung und einer ebenfalls aus Kunststoff bestehenden, auf den Luttenumfang aufgeschweißten Offenhaltespirale.The invention relates to a foldable weather flute made of plastic with an interlocking, by tensioning means distributed over their circumference Connection and one also made of plastic, welded onto the duct circumference Keep-open spiral.

Derartige faltbare Wetterlutten sind an sich bekannt. Bei ihnen ergeben sich jedoch Schwierigkeiten aus der Tatsache, daß sowohl ihre Verbindungen für aufeinanderfolgende Luttenschüsse als auch ihre Offenhaltespiralen bisher aus Metall bestehen, obgleich es auch bekannt ist, Offenhaltespiralen aus Kunststoff zu verwenden. Bei den Verbindungen entsteht dadurch die Gefahr der Rostbildung, die ihrerseits zu Undichtigkeiten an den aufeinanderliegenden Flächen der Verbindung führt. Auch die Offenhaltespiralen an bekannten Kunststoffwetterlutten unterliegen der Korrosion, weil sie nicht wie gewöhnliche Blechwetterlutten verzinkt werden können, weil die als Folge der Verzinkung unvermeidliche Unebenheit der Oberfläche sehr schnell die empfindliche Kunststoffolie, aus der der Luttenkörper besteht, zerstören würde.Such foldable weather ducts are known per se. However, difficulties arise with them from the fact that both their connections for successive pipe shots and theirs Hold-open spirals have hitherto been made of metal, although it is also known to be made of hold-open spirals Use plastic. This creates the risk of rust formation in the connections, which in turn leads to leaks on the surfaces of the connection lying on top of one another. Also the keep-open spirals known plastic weather flutes are subject to corrosion because they are not like ordinary ones Sheet metal air ducts can be galvanized because of the unevenness that is inevitable as a result of galvanizing the surface very quickly removes the sensitive plastic film from which the duct body is made, would destroy.

Aus diesem Grunde werden bei den bekannten Lutten dieser Art die Offenhaltespiralen einseitig mit einer Kunststoffolie umhüllt. Das bedeutet einmal eine erhebliche weitere Verteuerung an sich, bringt zum anderen aber die Gefahr mit sich, daß sich unter der Offenhaltespirale im Bereich der !unmittelbaren Berührungsfläche zwischen dieser und dem Luttenkörper unkontrollierbare Korrosionserscheinungen ergeben. For this reason, in the known ducts of this type, the keep-open spirals are on one side wrapped in a plastic film. This means a considerable further increase in price in itself, brings to the But others run the risk of getting under the hold-open spiral in the area of the immediate contact area between this and the duct body result in uncontrollable signs of corrosion.

An Metallwetterlutten ist bereits vorgeschlagen worden, ineinandergreifende Ringkörper, die auf die Luttenenden aufgeschweißt sind, und Verbindungselemente, die über den Umfang der Lutte verteilt sind, zu verwirklichen. Diese Verbindungselemente haben jedoch den Nachteil ihrer vergleichsweisen Starrheit, daß die Ringkörper einen vergleichsweise großen Materialquerschnitt benötigen. Außerdem wird hierdurch der grundsätzliche Nachteil der Korrosionsbildung nicht verhindert.At Metallwetterlutten has already been proposed, interlocking ring body that on the Duct ends are welded on, and connecting elements distributed over the circumference of the duct are to be realized. However, these connecting elements have the disadvantage of their comparative Rigidity that the ring bodies require a comparatively large material cross-section. aside from that this does not prevent the fundamental disadvantage of the formation of corrosion.

Die Erfindung löst die Aufgabe, den bisher völlig starren Verbindungselementen eine gewisse und zwar für die Ausschaltung der Gefahren von Dauerverformungen unter der Einwirkung mechanischer Beanspruchungen ausreichende Elastizität zu verleihen, dadurch daß 'die 'gesamte Lutte einschließlich ihrer Verbindungselemente und Ofrenhaltespiralen aus Kunststoff hergestellt wird.The invention solves the problem, the previously completely rigid connecting elements a certain and that for the elimination of the dangers of permanent deformation to give sufficient elasticity under the action of mechanical loads, in that 'the' entire duct including its connecting elements and Ofrenhaltespiralen Plastic is made.

Das geschieht erfindungsgemäß grundsätzlich da-Faltbare Wetterlutte aus KunststoffAccording to the invention, this is basically done as a foldable weather flute made of plastic

Anmelder:Applicant:

DipL-Berging. Udo Brand,
Duisburg-Hamborn, Bleeckstr. 36Diploma in Berging. Udo Brand,
Duisburg-Hamborn, Bleeckstrasse. 36

Als Erfinder benannt:Named as inventor:

Josef Brand t, Duisburg-HambornJosef Brand t, Duisburg-Hamborn

durch, daß die auf dem Luttenumfang aufgeschweißten Hohlkörper und der an dem einen Luttenende angeordnete Ringkörper aus Kunststoff bestehen, wobei der auf das Luttenende aufgeschweißte, in Form eines liegenden U profilierte Ringkörper mit seinem inneren Schenkel an der Luttenwandung befestigt ist und mit seinem äußeren Schenkel über die End-by that the hollow body welded onto the duct circumference and the one at one end of the duct arranged ring body consist of plastic, the welded onto the duct end, in the form a lying U profiled ring body is attached with its inner leg to the duct wall and with its outer leg over the end

ao kante des Luttenschusses vorspringt, während der an dem Ende des anzuschließenden Luttenschusses angeordnete, ebenfalls aus Kunststoff bestehende Ringkörper ein über 'die Endkante dieses Schusses nasenartig überkragendes, in das U-Profil des ersten Ringkörpers eingreifendes Hohlprofü besitzt, dessen Wandungen im wesentlichen die gleiche Stärke und damit gleiche Elastizität besitzen wie die Schenkel des U-Profils an dem ersten Luttenschußende, und daß die mit nasenartigen Ansätzen hinter einen riickwärtigen Einschnitt des zweiten Ringkörpers greifenden Verspannungskörper aus wesensgleichem Kunststoff an demBoden des den erstenRingkörper bildenden U-Profils angeschweißt sind und Ösen bildende, rückseitige Ansätze tragen.ao edge of the pipe section protrudes, while that at the end of the pipe section to be connected arranged, also made of plastic ring body over 'the end edge of this shot Has a nose-like protruding hollow profile that engages in the U-profile of the first ring body, of which Walls have essentially the same strength and thus the same elasticity as the legs of the U-profile at the first end of the duct, and that those with nose-like attachments behind one Incision of the second ring body gripping tension body made of identical plastic are welded to the bottom of the U-profile forming the first ring body and form eyelets, wear back lugs.

Diese Verbindung gemäß der Erfindung läßt sich aus Kunststoff herstellen und ist in dem gewünschten Grade, bedingt durch die Eigenschaften des Kunststoffes, elastisch verformbar, d. h., sie gibt unter der Einwirkung mechanischer Beanspruchung nach, um dann wieder in die Ausgangsgestalt zurückzukehren, wobei .allenfalls während (dieser momentanen Verformungsperioden eine geringe Undichtigkeit entsteht, die vollkommene Dichtigkeit der Verbindung aber mit der Rückkehr der vorhergehend verformten Teile in ihren Ausgangszustand sofort wieder hergestellt ist.This connection according to the invention can be made of plastic and is in the desired Degree, due to the properties of the plastic, elastically deformable, d. h., she gives under the Exposure to mechanical stress, only to return to the original shape, where. if necessary during (these momentary deformation periods a slight leak occurs, but the complete tightness of the connection with the return of the previously deformed one Parts are immediately restored to their original state.

Zweckmäßig und gemäß einem weiteren Merkmal der Erfindung nimmt die ösenartige Verlängerung ein ebenfalls aus Kunststoff bestehendes AufhängegliedAppropriately and according to a further feature of the invention, the loop-like extension assumes Suspension link also made of plastic

go auf, das dann den gleichen Vorteil der begrenzten Nachgiebigkeit und der Unempfindlichkeit gegen Korrosion aufweist.go on, which then has the same advantage of limited compliance and insensitivity to Has corrosion.

709 619/82709 619/82

Claims

The keep-open spiral of the plastic weather flute according to the invention is also made of plastic. According to a further feature of the invention, this is achieved in that the hollow body forming the hold-open spiral has a profile, which slopes gently to both sides and gradually merges into the circumference of the duct, a preferably oval bore which extends in its longitudinal direction and reduces the rigidity of the profile . The invention is further described below using an exemplary embodiment. It shows A b b. 1 the new weather flute in side view and A b b. 2 shows a section through the junction of two successive shots on a larger scale. Fig. 1 shows the spiral shape of the duct tube α made of fabric-reinforced polyvinyl chloride or equivalent plastic surrounding hollow body b as well as the formation of the two end edges b ', b "of the duct section. As can be seen from A b b the embodiment in the plastic film, the fabric layer c embedded from a fabric of the nature identified above, so that the outer and inner wall of the lute tube is formed by smooth Kunststoffilma ', α ", so the fabric insert is completely protected by the plastic and by the smooth inner wall long the flow resistance of the duct is favorably influenced. The hollow body b running spirally around the duct, whose profile flattening on both sides and gently merging into the duct wall, can be seen in the figure, has a preferably oval-shaped bore e. At the end edge of one of the duct sections to be connected to each other ο is welded at reference number / the U-shaped profiled ring / made of comparatively stiff plastic, one leg of which protrudes over the end edge of the duct. Another profile ring Z made of the same material as the profile ring / is welded to the end edge of the second shot ρ. From this a hollow nose-like projection k extends into the interior of the U-shaped profile ring, which is essentially filled by a soft rubber ring m. On the outer leg of the U-shaped profiled ring / in the rear part of the same, the locking bracket g, which consists of particularly good resilient properties and which ends at the front in a nose i, which is rounded on the outside, is welded at h. This bracket rests loosely on the outer leg of the U-shaped profiled ring body / in the area between the welding point h and the nose i and, after it has been raised against the effect of its resilient properties, falls behind the rear shoulder projection after the two ends of the duct have been pushed into one another of the ring Z a. The connection of the two sections with one another can thus be established in the simplest manner. The locking brackets g are provided in a number of 3 to 6, depending on the diameter of the duct, evenly distributed over the duct circumference and have eyelets for suspension links q made of plastic. Patent claims:

1. Foldable weather duct made of plastic with a connection consisting of interlocking ring elements which are clamped to one another in a sealing manner by clamping means distributed over their circumference and a hold-open spiral which is also made of plastic and is welded onto the circumference of the duct, characterized in that the hollow bodies (6) welded onto the circumference of the duct and the ring body (/) arranged at one end of the duct are made of plastic, the inner leg of the annular body (/) welded onto the duct end and profiled in the form of a U on the duct wall (α ') and with its outer leg protrudes over the end edge of the pipe section (o) , while the ring body (/) arranged at the end of the pipe section to be connected, also made of plastic, has a hollow profile protruding like a nose over the end edge of this section and engaging in the U-profile of the first ring body (/) owns whose walls n have essentially the same strength and thus the same elasticity as the legs of the U-profile at the first Luttenschußende, and that with nose-like projections (z) behind a rear incision of the second ring body (I) gripping bracing body (g) made of identical plastic are welded to the bottom of the U-profile forming the first ring body (/) and carry eyelets (r) forming, rear lugs.

2. Foldable weather flute according to claim 1, characterized in that the loop-like extension (r) receives a suspension member (q) also made of plastic.

3. Foldable weather duct according to claims 1 and 2, characterized in that the hollow body forming the hold-open spiral (b) of gently sloping to both sides, gradually merging into the circumference of the duct tube extending in its longitudinal direction, reducing the rigidity of the profile , preferably oval bore (e).

Considered publications: German Patent Specifications No. 822 930, 843 779, 965485;

Belgian Patent No. 504,972; French patent specification No. 902 280.

1 sheet of drawings