CA1210646A

CA1210646A - Composite weatherstrip for doors and windows

Info

Publication number: CA1210646A
Application number: CA000419291A
Authority: CA
Inventors: Jean-Paul Giguere
Original assignee: Donat Flamand Inc
Current assignee: Jeld Wen of Canada Ltd
Priority date: 1983-01-12
Filing date: 1983-01-12
Publication date: 1986-09-02

Abstract

TITRE: COUPE-FROID COMPOSITE POUR FEN?TRES ET PORTES PR?CIS DE LA DIVULGATION Un coupe-froid pour portes domestiques et fenêtres à battants et à auvents conçu dans un matériau thermoplastique flexible, constitué d'une base en forme de T continuée, à une extrémité, par une tige à ancrage double fléche et à l'autre extrémité de deux ailettes de caoutchouc rattachées parallèlement à chacune des extrémités du T. Ce coupe-froid, grâce au volume d'air formé par ses deux ailettes, constitue une barrière thermique étanche très efficace dans les climats froids. De plus, la flexibilité des minces ailettes maintient la tension au moment de l'ouverture et de la fermeture des battants de la fenêtre à un niveau acceptable. Enfin, la longueur des fines ailettes leur permet de s'adapter et d'être utiles même dans une structure n'ayant pas fait l'objet d'ajustements très précis.TITLE: COMPOSITE WALLPROOF FOR WINDOWS AND DOORS PRECISE DISCLOSURE A weatherstripping for domestic doors and casement and awning windows designed in a flexible thermoplastic material, consisting of a continuous T-shaped base, at one end, by a rod with double arrow anchoring and at the other end of two rubber fins attached parallel to each end of the T. This weatherstripping, thanks to the volume of air formed by its two fins, constitutes a waterproof thermal barrier very effective in cold climates. In addition, the flexibility of the thin fins keeps the tension when opening and closing the window sashes at an acceptable level. Finally, the length of the fine fins allows them to adapt and be useful even in a structure that has not been subject to very precise adjustments.

Description

~Z~ 4&

La presente invention se rapporte a un coupe-froid conçu pour portes et fenêtres domestiques à pan-neaux pivotants.

Le coupe-froid traditionnellement utilise sur le périmetre des portes et des battants ou auvents pivo-tants des fenêtres est une languette de tôle metallique mince telle le cuivre ou l'aluminium, lesquels ne consti-tuent pas des materiaux assez souples pour obéir et repren-dre leur forme et leur position initiale lors de l'ouverture et de la fermeture de la fenêtre ou de la porte. De plus, ces coupe-froids sont toujours constitues d'un element unique (ailette ou autre), ce qui ne permet pas une etan-cheite parfaite. Parfois, on emploie des coupe-froids de plastique rigide fixes par collage; ils sont fragiles et ils resistent mal au fendillement et à la brisure au froid, au gel et au frottement occasionne par l'ouverture et la fermeture frequentes.

Un coupe-froid presentant certaines similitudes avec celui faisant l'objet de la presente divulgation quant au mode de fixation est divulgue par le brevet americain n 3,276,167 concede le 4 octobre 1966 pour une realisation de J.A. Bus et al. Ce coupe-froid, tout en étant constitue de deux ailettes, presente une difference fondamentale avec celui faisant l'objet de la presente divulgation puisque ces deux ailettes sont repliees vers la base et sont situees de part et d'autre de la tige principale, a l'extremite de laquell~ elles se rejoignent.

Ce coupe-froid n'assure donc pas une double-etancheite, et il requiert un bon ajustement du battant ce qui est difficile a atteindre en pratique.

~21~ti46 J'ai découvert que ces inconvénients peuvent être supprimés par l'utilisation d'un coupe-froid constitué d'un élément extrudé monopièce ayant une barre d'appui de plastique rigide a l'aspect d'une étroite bande continuée à
ses deux extrémités par deux ailettes d'étanchéité de matière plastique plus flexible et plus caoutchouteuse que celle de la barre d'appui, et attachées de fason intégrante à cette dernière. Ces ailettes d'étanchéité partent dans le prolongement de la barre d'appui puis courbent vers le haut en s'éloignant de la barre d'appui pour donner deux minces éléments parallèles de scellement qui s'amincissent encore plus en direction de leur bord de fuite. Ces ailettes d'étanchéité s'étendent toutes deux en direction du dormant de l'ouverture. L'espace créé entre les ailettes permet d'emmaganiser un certain volume d'air lors de la fermeture du battant protégé par le coupe-froid, ce qui constitue une barrière entre l'air extérieur et l'air ambiant, assurant ainsi une étanchéité efficace. De plus, les ailet-tes, lorsqu'elles sont faites d'un matériau caoutchouteux très souple, qui conserve sa souplesse même lorsqu'exposé à des températures très basses, peuvent remplir adéquatement leur rôle presque indéfiniment sans fissurer ni casser. Finale-ment, ce coupe-froid peut être retenu au battant par le moyen d'une patte d'ancrage insérée dans une étroite fente sur les bords extérieurs du battant, et maintenu en place par simple frottement par un système d'ancrage approprié, par exemple par double flèche, ce qui résout en très large mesure les problèmes occasionnés par le décollement des coupe-froids lors du gel.

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i2~(~646 Ces caractéristiques, et certaines autres, de même que les avantages de cette structure de coupe-froid deviendront plus apparents a la lecture de la description ci-après d'une réalisation préférentielle de cette invention et a l'examen des dessins suivants illustrant cette réali-sation de l'invention, dans lesquels:
La Figure 1 représente une coupe verticale d'un coupe-froid vu en perspective; et la Figure 2 représente une coupe horizontale d'une structure, composée d'un élément mobile et d'un élément fixe, a laquelle est incorporé un coupe-froid selon cette invention; ladite structure étant illustrée dans la position fermée.
Le coupe-froid composite 12 illustré dans la Figure 1 est composé d'une base 3 en forme de T, faite d'un matériau plastique assez rigide. A l'axe principal 1 de cette base, sont greffées quatre bandes de fixation 2, couplées en forme de flèche. Ces bandes sont de préférence faites d'un matériau caoutchouteux plus souple et plus flexible que celui de la base 3. La barre d'appui horizon-tale 3 du T peut avoir, dans un mode de réalisation spéci-fique, une longueur d'environ 3/3 de pouce. ~ chacune des extrémités de celle-ci est attachée de façon intégrante une ailette dlétanchéité 4, partant dans le prolongement de la barre d'appui 3 puis courbant vers le haut en s'éloignant de la barre d'appui pour donner deux minces éléments parallèles de scellement 22. Les ailettes 4 sont donc parallèles et elles s'étendent dans une même direction créant une forma-tion en U. Elles sont confectionnées dans un matériau caoutchouteux souple et flexible tel que celui des bandes de fixation 2 et vont en s'amincissant vers leur bord de fuite lZlQ6~t~

14. Chaque ailette 4 est montrée à la Figure 1 comme étant constituée d'une partie inférieure 20 située dans le prolon-gement de la barre horizontale 13, d'une partie supérieure 22 allant s'amincissant, et d'une partie courbée 17 decri vant un quart de cercle et unissant les deux premières.
De plus, selon une réalisation préférentielle de cette invention, chaque ailette 4 est munie d'un bord de fuite plus épais et arrondi, tel que montré à la référence 30, lequel favorise le renversement de chaque ailette lors de l'ouverture du battant qui les supporte. Ce leger ren-flement 30 donne aussi plus de corps à ces ailettes 4 et il en réduit le risque de déchirure prématurée.
Bien que de moindre importance, l'extrémité 32 de chaque bande de fixation 2 présente des arêtes vives a~in d'augmenter la résistance à l'arrachement du coupe-froid 12;

~_ . _ lZ~646 Je préfère employer un moyen de fixation du coupe-froid 12 de la ~orme de bandes de fixation 2 faites de matériau souple et formant une double flèche car ce moyen s'est avéré extrêmement.simple et efficace en pratique.
Cependant, il est bien évident que d'autres modes de fixation peuvent être emplo~és afin de retenir la base en forme de T
dans une rainure réceptrice appropriee tel qu'il sera decrit ci-apres. On peut même envisager l'emploi de bandes de fixation et d'autres formes de prise faite du même materiau plastiqué qué celui dont la base:3 est fabriquée.

La Figure 2 illustre une structure composée d'un élément fixe 5 et d'un élément mobile 6 auquel est incorporé le coupe-froid 12 illustré a la Figure 1.
L'axe principal 1 du coupe-froid est profondément ancré
dans une rainure 7 pratiquée dans l'élément mobile 6.
En pratique, dans le cas d'une fenêtre à battants, l'élé-ment fixe 5 est le dormant de la fenêtre et l'élément mobile 6 est son battant constitué d'un chassis 15 et d'un vitrage quelconque, un double vitrage scellé 16 etant montré à la Figure 2.

Lorsque la structure est dans une position fermee, tel qu'illustré à la Figure 2, l'extrémite 8 de l'élément mobile 6 s'appuie contre l'arrêt 9 de l'élément fixe 5 et, par ce mouvement, les ailettes 4 se replient dans un sens ou dans l'autre selon la direction du deplacement du battant 6. Le volume d'air emprisonne dans l'espace 10 constitué entre les deux ailettes 4 forme alors une barriere thermique efficace entre l'air extérieur et l'air ambiant.
La longuèur ainsi que la flexibilité des ailettes 4 leur permettent de s'adapter et même de compenser une structure lZ~46 n'ayant pas fait l'objet d'ajustements minutieux.

De plus, lors du mouvement d'ouverture du battant 6, c'est-a-dire lorsque l'extremite 8 de l'element mobile 6 s'eloigne de l'arrêt 9 de l'element fixe 5, la souplesse et la flexibilite des ailettes 4 leur permet de se replier sur elles-mêmes avant de suivre le mouvement qui leur est impose sans que le frottement cause par ce mouvement ne les endommage ou n'oppose de resistance indue au déplacement. D'autre part, l'axe principal 1 etant fait d'un materiau plus rigide, il est assez solide pour resister aux forces de cisaillement et de tension imposees au coupe-froid 12, lesquelles sont de toute façon bien faibles.

La hauteur de la partie superieure de chaque ailette 4 peut varier selon les besoins, et une hauteur de 1/4 de pouce pour un ecartement de 3/8 de pouce s'est avere tres satisfaisant.

J'ai découvert que le coupe-froid faisant l'objet de la presente invention est specialement utile lorsqu'incor-pore a une fenêtre a battant ou a auvent et a une porte domestique dans les habitations situees dans des climats froids où il est de plus en plus important de reduire les pertes de chaleur par infiltration d'air aux ouvertures.
Ce coupe-froid ne requiert aucun ajùstement a l'arrivee de l'hiver, et son remplacement, s'il devenait utile de le faire, s'effectue aisément par le consommateur sans l'aide d'outil particulier.

Pour réaliser un coupe-froid 12 fait de deux substances distinctes tel que montré a la Figure 1, on peut faire appel au procede connu de la co-extrusion qui permet l'extrusion simultanee de deux materiaux thermo-plastiques compatibles qui se fixent l'un a l'autre dans 1)646 la filière d'extrusion. Par ailleurs, la méthode de fabri-cation du coupe-froid 12 ne fait pas partie de la presente invention, laquelle concerne plus particulierement la structure du coupe-froid peu importe les moyens employés pour le realiser.

Le choix des materiaux est relativement important au succes de l'invention bien que la composition exacte des substances en presence ne soit pas critique. Le support en forme de T doit être fait d'une matiere plastique assez rigide pour permettre l'insertion et la retention du coupe-froid dans la rainure 7 qui le reçoit, et pour bien supporter les deux ailettes 4, et maintenir celles-ci espacees l'une de l'autre. Cette matiere plastique doit également prévenir le plus possible le rétrécissement longitudinal car autrement le coupe-froid laisserait un jour dans les coins. Elle doit egalement posseder suffisamment de flexibilite pour resister au fendillement surtout a basse temperature. Le chlorure de polyvinyle (PVC) est un exemple d'une substance appropriee.
Quant aux ailettes 4, un caoutchouc compatible avec la substance plastique du support en T doit être choisi pour ses qualites aux temperatures extrêmes en presence. Le materiau doit demeurer flexible même a des basses tempera-tures de l'ordre de -30 degres Celsius, et avoir assez de corps pour conserver sa forme initiale a des temperatures normales de 20 a 30 degres Celsius. Par exemple, on peut utiliser un composite de PVC plastifie et d'un caoutchouc synthetique en diverses proportions pour satisfaire les conditions de temperature telles le coefficient d'allonge-ment lineaire, la resistance au froid, la resistance a la chaleur et la stabilite thermique et rencontrer les pro-prietes mecaniques requises pour chaque application telles --l'allongement à la rupture, la résistance à la traction et la durete. Le tableau qui suit fournit, a titre indicatif, la fiche technique des deux materiaux utilises pour fabri-~uer une réalisation particulierement avantageuse de l'inven-tio~:

_ Caractéristiques ~latériau de la Matériau des base en T ailettes .

résistance au froid aucune cassure aucune cassure à -35C(24 hres) a -35C(24 hres) résistance a la chaleur aucune déformation aucune déformation a 70C, (24 hres) a 70C, (24 hres) stabilité thermique 125 minutes (DIN 118 minutes (DIN
53381, 180C) 53381, 180C) coefficient d'allongement 0,082 x 10-3/C 0,084 x 10-3/C
inéaire (VDE 0304 par . 4, (VDE 0304 par. 4, partie 1) partie 1) densité 1,306 g/cm3 1.146 g/cm3 (DIN 53479) (DIN 53479) dureté (+ 3) 98 shore A 60 shore A

résistance a la 220 N/mm2 110 N/mm2 traction (DIN 53504) (DIN 53504) allongement a la 250 ~ (DIN 53504) 420 % (DIN 53504) rupture déformation permanente n.d. maximum 13 %
après stockage a l'air (DIN 53517/1971, chaud sous pression 24 hres, 70C, charge constante 5 bar/cm2) ~ Z ~ 4 &

The present invention relates to a cutter cold designed for domestic paned doors and windows swivel rings.

The weather stripping traditionally used on the perimeter of pivotal doors and casements or awnings window shutters is a strip of metal sheet thin such as copper or aluminum, which do not not kill materials flexible enough to obey and retake dre their shape and their initial position when opening and closing the window or door. Furthermore, these weather strippers are always made up of an element single (fin or other), which does not allow a perfect food. Sometimes we use weather strippers rigid plastic fixed by gluing; they are fragile and they resist cracking and breaking badly cold, frost and friction caused by opening and frequent closings.

A weather stripping with certain similarities with the one subject to this disclosure as to the method of attachment is disclosed by the patent No. 3,276,167 concedes on October 4, 1966 for a realization of JA Bus et al. This weather stripping, everything being made up of two fins, presents a difference fundamental with that which is the subject of the present disclosure since these two fins are folded towards the base and are located on either side of the stem main, at the end of which they meet.

This weather stripping therefore does not ensure a double seal, and it requires a good adjustment of the leaf which is difficult to achieve in practice.

~ 21 ~ ti46 I discovered that these disadvantages can be eliminated by the use of a weather stripping consisting of a one-piece extrusion with a grab bar rigid plastic has the appearance of a narrow strip continued at its two ends by two sealing fins of plastic more flexible and rubbery than that of the grab bar, and attached integrally to the latter. These sealing fins leave in the extension of the grab bar then bend upwards moving away from the grab bar to give two thin parallel sealing elements which further thin more towards their trailing edge. These fins both extend towards the frame of the opening. The space created between the fins allows to air a certain volume of air during closing leaf protected by the weather stripping, which constitutes a barrier between outside and ambient air, ensuring thus an effective seal. In addition, the fins, when made of a very rubbery material flexible, which retains its flexibility even when exposed to very low temperatures, can adequately fill their role almost indefinitely without cracking or breaking. Final-ment, this weatherstripping can be retained on the leaf by the by means of an anchoring tab inserted in a narrow slot on the outer edges of the leaf, and held in place by simple friction by an appropriate anchoring system, for example by double arrow, which solves in very wide measures the problems caused by the separation of weather stripping during frost.

. ~

i2 ~ (~ 646 These characteristics, and some others, likewise that the advantages of this weather stripping structure will become more apparent on reading the description below of a preferred embodiment of this invention and examining the following drawings illustrating this realization sation of the invention, in which:
Figure 1 shows a vertical section of a weather stripping seen in perspective; and Figure 2 shows a horizontal section of a structure, composed of a mobile element and an element fixed, to which is incorporated a weather stripping according to this invention; said structure being illustrated in position closed.
The composite weather strip 12 illustrated in the Figure 1 is composed of a T-shaped base 3, made of a fairly rigid plastic material. At main axis 1 of this base are grafted four fixing bands 2, coupled in the shape of an arrow. These bands are preferably made of a softer and more flexible rubbery material flexible than that of the base 3. The horizontal grab bar tale 3 of the T can have, in a specific embodiment a length of about 3/3 inch. ~ each of ends of it is integrally attached a sealing fin 4, extending in the extension of the grab bar 3 then bending upwards away from the grab bar to give two thin parallel elements sealing 22. The fins 4 are therefore parallel and they extend in the same direction creating a forma-tion in U. They are made of a material soft and flexible rubbery like that of the strips of fixation 2 and tapering towards their trailing edge lZlQ6 ~ t ~

14. Each fin 4 is shown in Figure 1 as being consisting of a lower part 20 located in the extension horizontal bar 13, upper part 22 going thinner, and a curved part 17 decri to a quarter circle and uniting the first two.
In addition, according to a preferred embodiment of this invention, each fin 4 is provided with an edge of thicker and rounded leakage, as shown in the reference 30, which promotes the inversion of each fin during of the opening of the leaf which supports them. This light also 30 gives more body to these fins 4 and it reduces the risk of premature tearing.
Although of lesser importance, the end 32 of each fastening strip 2 has sharp edges a ~ in increase the tear resistance of the weather stripping 12;

~ _. _ lZ ~ 646 I prefer to use a means of fixing the weatherstripping 12 of the elm 2 fastening strips made of flexible material and forming a double arrow because this medium has proven to be extremely simple and effective in practice.
However, it is obvious that other methods of attachment can be used to hold the T-shaped base in an appropriate receiving groove as described below. We can even consider the use of attachment and other forms of grip made of the same material plastic than the one whose base: 3 is made.

Figure 2 illustrates a composite structure a fixed element 5 and a mobile element 6 to which is incorporated the weather stripping 12 illustrated in Figure 1.
The main axis 1 of the weather stripping is deeply rooted in a groove 7 made in the movable element 6.
In practice, in the case of a casement window, the element fixed 5 is the window frame and the element mobile 6 is its leaf consisting of a chassis 15 and of any type of glazing, sealed double glazing 16 being shown in Figure 2.

When the structure is in a position closed, as illustrated in Figure 2, the end 8 of the movable element 6 bears against the stop 9 of the element fixed 5 and, by this movement, the fins 4 fold back in one direction or the other depending on the direction of movement leaf 6. The volume of air trapped in space 10 formed between the two fins 4 then forms a barrier effective thermal between the outside air and the ambient air.
The length as well as the flexibility of the fins 4 their allow to adapt and even to compensate for a structure lZ ~ 46 have not been subject to meticulous adjustments.

In addition, during the opening movement of the leaf 6, that is to say when the end 8 of the movable element 6 moves away from the stop 9 of the fixed element 5, the flexibility and the flexibility of the fins 4 allows them to fold over themselves before following the movement imposed on them without the friction caused by this movement damaging them or does not offer undue resistance to movement. On the other hand, the main axis 1 being made of a more rigid material, it is strong enough to withstand shear forces and of tension imposed on the weather stripping 12, which are anyway very weak.

The height of the upper part of each fin 4 can vary as required, and a height of 1/4 inch for 3/8 inch spacing has been found very satisfaying.

I discovered that the weather stripping object of the present invention is especially useful when incorporated pore has a casement or awning window and a door domestic in dwellings located in climates cold where it is increasingly important to reduce heat loss by air infiltration at the openings.
This weather stripping requires no adjustment on arrival.
winter, and its replacement, if it became useful to do so, easily performed by the consumer without the aid of tools particular.

To make a weather strip 12 made of two separate substances as shown in Figure 1, we can use the known co-extrusion process which allows the simultaneous extrusion of two thermo-materials compatible plastics that attach to each other in 1) 646 the extrusion die. In addition, the manufacturing method weather stripping cation 12 is not part of this invention, which relates more particularly to the weather stripping structure regardless of the means used to realize it.

The choice of materials is relatively important success of the invention although the exact composition of substances present is not critical. Support in T-shape should be made of enough plastic rigid to allow insertion and retention of the cutter cold in the groove 7 which receives it, and to support well the two fins 4, and maintain these spaces one the other. This plastic must also prevent as much as possible the longitudinal narrowing because otherwise the weather stripping would one day leave in the corners. She must also have enough flexibility to resist cracking especially at low temperatures. Chloride polyvinyl (PVC) is an example of a suitable substance.
As for the fins 4, a rubber compatible with the plastic substance of the T-support must be chosen for its qualities at the extreme temperatures present. The material must remain flexible even at low temperatures tures in the range of -30 degrees Celsius, and having enough body to maintain its original shape at temperatures normal from 20 to 30 degrees Celsius. For example, we can use a composite of plasticized PVC and rubber synthetic in various proportions to satisfy temperature conditions such as the coefficient of elongation linear resistance, cold resistance, resistance to heat and thermal stability and meet the pro-mechanical requirements required for each application such -elongation at break, tensile strength and hardness. The following table provides, for information only, the technical sheet of the two materials used to manufacture ~ uer a particularly advantageous embodiment of the invention tio ~:

_ Characteristics ~ Material material base in T fins .

resistance to cold no breakage no breakage at -35C (24 hrs) to -35C (24 hrs) heat resistance no deformation no deformation at 70C, (24 hrs) at 70C, (24 hrs) thermal stability 125 minutes (DIN 118 minutes (DIN
53381, 180C) 53381, 180C) coefficient of elongation 0.082 x 10-3 / C 0.084 x 10-3 / C
linear (VDE 0304 par. 4, (VDE 0304 par. 4, part 1) part 1) density 1.306 g / cm3 1.146 g / cm3 (DIN 53479) (DIN 53479) hardness (+ 3) 98 shore A 60 shore A

resistance to 220 N / mm2 110 N / mm2 traction (DIN 53504) (DIN 53504) elongation at 250 ~ (DIN 53504) 420% (DIN 53504) break permanent deformation nd maximum 13%
after air storage (DIN 53517/1971, hot under pressure 24 hrs, 70C, constant load 5 bar / cm2)

Claims

The realizations of the invention, about of which an exclusive property or privilege right is claimed, are defined as follows:

1. One-piece weatherstripping extruded intended to be fixed on the perimeter of the leaf pivoting of a door or window, comprising a base suitably rigid T-shaped plastic, each of which ends of the horizontal bar is followed by a fin starting in the extension of said horizontal bar then continuing in part curved which describes a quarter circle to end in a sealing part generally perpendicular to said bar and directed in the opposite direction to the bar vertical of said base, said fins being parallel and about 3/8 of an inch apart made from a softer rubber material and flexible than that of said base, allowing them to fold during the closing movement of the structure, and thus trapping a volume of air, which constitutes a effective barrier between outside and ambient air, and to come back on themselves to quickly resume their initial shape during the opening movement of the structure without being damaged by frequent closing movements ture and opening of the structure, the vertical bar of the T
of said base being provided with an anchoring means serving to anchor the weather stripping on the perimeter of said leaf in a fairly deep groove made in said leaf.

2. A weather stripping as defined in the resale dication 1, whose anchoring means is made up of narrow bands located transversely on said vertical bar of the T of said base, and the fins of which thin towards their respective trailing edge, which is rounded.

3. A weather stripping in the form of an ex-one-piece extruded for household doors and window frames casement or awning comprising a base made of a material rigid T-shaped having a horizontal bar and a vertical anchor bar, and two thin sealing fins made of a suitable internal rubber material rigged at the horizontal bar of said base, one each end of said horizontal bar, each fin having a lower part located in the extension of said horizontal bar generally of the same thickness as said horizontal bar, and attached to one end of it, a upper part of the seal going thinner towards its trailing edge, and a curved part describing general actually a quarter circle uniting the upper part with the lower part, the upper parts of said fins being essentially parallel to said bar vertical extending in the opposite direction from it so as to define between them an air space playing the role thermal barrier when the weather stripping is in place and that these sealing fins rest on the frame of the door or window to which the weather stripping is applied.

4. The weather stripping of claim 3 in which the space between said fins is of the order of 3/8 inch, and the height of the underparts is on the order of 1/4 inch.

5. A weather strip according to one or the other of the claims 3 and 4 including the trailing edge of the fins has a slight rounded bulge favoring the operation overturning of each fin, and whose vertical bar anchor includes a series of anchor bands forming a double arrow.

6. A composite weather stripping made by the co-extrusion of two compatible plastics, comprising a flat and rigid grab bar made of rigid plastic, two sealing fins made of more flexible plastic and more rubbery than that of the grab bar and atta-integral with the grab bar, said sealing fins extending from said extension grab bar then bending upwards away from said grab bar to give two thin parallel elements sealing elements and define in association with said grab bar, U-shaped formation, said sealing elements gradually thinning towards their edge trailing for more flexibility, said support bar being made of a material that gives it enough rigidity to hold and guide said sealing fins and pre-the shrinking or stretching of the weatherstripping service around the edge of a door or window.

7. A weather strip as defined in resale dication 6 whose grab bar, has the appearance of a T, the vertical bar forming an anchoring means.

8. A weather strip as defined in resale dication 7 including said fins and said grab bar are made of thermoplastic material, and of which said means anchor includes said vertical bar made of plastic rigid and a series of inclined fixing strips and forming a double arrow pointing in the opposite direction to said grab bar.

9. In a hinged door or window a hinged leaf which, once in position closed, at its periphery somewhat spaced from the doorframe, a sealing means to obstruct the space between the leaf and the jamb, comprising:

a composite weather stripping made by co-extrusion of two compatible plastic materials, and consisting of rigid and flat grab bar made of rigid plastic and two sealing fins made of more flexible plastic and more rubbery than that of the grab bar and integrally attached to the grab bar;
said support bar including an anchoring means on its underside, fitting into a slot made for this purpose on the outer edges of the leaf so that said support bar rests against the outer edges of the beating on either side of said slot, said fins departing from said bar of support then curving upwards away from said grab bar so as to form two thin elements sealing parallels and define in association with said support bar a U-shaped formation, said elements of sealing gradually tapering towards their trailing edge for more flexibility on the frame and to thus create between them an air space playing the role of thermal barrier;
said grab bar being made of a material rigid enough to properly hold and guide said fins and prevent shrinkage and stretching of the weatherstripping.

10. A weather strip designed to be mounted on the end of a movable panel of a door or window, said weather stripping having a constant profile and comprising a T-shaped base made of a material relatively rigid plastic, said T-shaped base having a horizontal bar and a vertical anchor tab connected to said horizontal bar, said horizontal bar being provided along each of its ends with a generally vertical fin integrated into said bar horizontal and which projects outwards, laterally relative to said base and then curves upward in a direction opposite to said base and said leg vertical anchoring, the two fins generally being parallel to each other and being spaced apart by a distance of about 3/8 of an inch, said fins being manufactured a rubbery plastic material which is more flexible and more flexible than the material of said T-shaped base, so that said fins can bend easily when said movable panel is open or closed and when said panel is in the closed position said fins trap a volume of air between them which constitutes an effective barrier between outside air and air ambient, said fins being flexible enough to so that you can return to their original shape when the opening of said movable panel and being sufficiently resistant to cracking and tearing despite frequent panel opening and closing operations mobile, said anchor tab being provided with means anchor to retain said weather stripping on the end said panel in a continuous groove made on the end of said movable panel.

11. Weather stripping as defined in claim 10, further characterized in that the anchoring means includes narrow protruding bands extending longitudinally of the park and other of said leg vertical anchoring, said fins tapering towards their respective trailing edge which is rounded.

12. Weather stripping for a household door or casement or awning window, said weather stripping comprising a T-shaped base made of rigid material and having a horizontal bar and an anchor tab perpendicular to said horizontal bar and formed of integrally on the latter, said anchor tab extending along and to the center of the underside of said bar; said weather stripping further comprising two thin and flexible sealing fins made of rubbery material which is more flexible and more rubbery as the material of said base, both fins being retained at said bar, along each end of said bar, each fin having a part lower which consists of a short lateral extension of said bar and having the same thickness as said bar, said lower part and said bar being integrally joined end-to-end; a tapered upper part towards its trailing edge and a curved and tapered intermediate part which connects said lower part to said part upper, said upper part of each fin extending upward from the upper side of said bar, the upper parts of the fins being essentially parallel to each other and parallel to said anchor tab and being spaced so as to define between them an air space which constitutes a barrier thermal when said weather stripping is in place on the door where the window which is in the closed position and the part upper fins resting on the frame of the door or window on which the weather stripping is applied.

13. Weather strip as defined in claim 12, further characterized in that the distance between said fins is in the range of 3/8 inch and the height of the upper part of each fin is the order of ? inch.

14. Weather strip as defined in claim 12, further characterized in that the trailing edge of each fin includes a rounded bulge in order to facilitate the deflection of each wing during the opening movement of said door or window, and said anchor tab includes a series of narrow bands longitudinal and inclined forming a double arrow which points opposite to said bar.

15. An extruded composite weather strip made of material plastic, comprising a rigid and flat base made of plastic material and two manufactured sealing fins of a more rubbery and flexible material than the base material and being retained integrally to said base, the materials of said base and said being compatible sealing fins, said fins sealing laterally outward relative to said base and then curving upward in a direction opposite to the upper side of said base to give two, usually parallel and thin sealing elements and form in association with said bases a structure having a U-shaped profile, said elements of sealing gradually tapering towards their edge respective leak in order to be able to adjust well to surfaces intended to come into contact with the elements of sealing, said base being made of a material plastic that is rigid enough to hold well and guide said sealing fins and prevent shrinking or stretching of said weather stripping when the weather stripping is mounted on the end of a door or window.

16. An extruded composite weather stripping as defined in claim 15, further characterized in that said base is T-shaped, the stem of the T forming a anchoring device.

17. An extruded composite weather stripping as defined in claim 16, characterized in that said fins and said base are each made of material thermo-plastic, said anchoring device comprising a central part made of said rigid material and a series of narrow and inclined bands forming a double arrow pointing in a direction opposite to said base.

18. In a casement door or window of the type comprising a movable glass panel mounted on hinges and whose ends, when the panel is in position closed face the jamb, a space being defined between the panel and the frame, a sealing means improved to obstruct this space, including:
- an extruded composite weather strip made of material plastic and including a rigid and flat support base made of plastic material and two sealing fins made of a more flexible and rubbery material than the material of the support base and being tied so integral with said support base, the materials of said support base and said sealing fins being compatible;
- said support base including a device anchoring on its underside to anchor said base of support in a groove formed along the end of said panel, with said rigid and flat support base applied against the end of the panel, on either side of said groove;
- said sealing fins advancing laterally outward relative to said base of support and then curving upward in one direction opposite the upper face of said support base for give two, generally parallel and thin elements of sealing and defining in association with said base supporting a structure having a U-shaped profile, said elements sealing gradually tapering towards their edge respective leak in order to properly adjust to surfaces of contact so as to define in the space formed by the fins and the contact surface of the jamb, a space air which forms a thermal barrier;
- said support base being made of a plastic material that is rigid enough to properly retaining and guiding said sealing fins and prevent shrinking or stretching of said weather stripping.