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EP 0 922 399 B1 |
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EUROPEAN PATENT SPECIFICATION |
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Mention of the grant of the patent: |
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02.05.2003 Bulletin 2003/18 |
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Date of filing: 30.11.1998 |
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International Patent Classification (IPC)7: A41F 1/00 |
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Magnetic closure particularly for items of clothing
Magnetverschluss insbesondere für Kleidungstücke
Fermeture magnétique en particulier pour vêtements
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Designated Contracting States: |
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DE ES FR GB IT |
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Priority: |
12.12.1997 IT MI972763
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Date of publication of application: |
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16.06.1999 Bulletin 1999/24 |
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Proprietor: SAMA S.p.A. |
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20050 Ronco Briantino (Milano) (IT) |
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Inventor: |
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- Grunberger, Erico
20144 Milano (IT)
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Representative: Modiano, Guido, Dr.-Ing. et al |
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Modiano & Associati SpA
Via Meravigli, 16 20123 Milano 20123 Milano (IT) |
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References cited: :
EP-A- 0 818 155 US-A- 3 161 932 US-A- 5 604 960
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DE-U- 8 405 339 US-A- 3 254 440
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Note: Within nine months from the publication of the mention of the grant of the European
patent, any person may give notice to the European Patent Office of opposition to
the European patent
granted. Notice of opposition shall be filed in a written reasoned statement. It shall
not be deemed to
have been filed until the opposition fee has been paid. (Art. 99(1) European Patent
Convention).
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[0001] The present invention relates to a magnetic closure particularly for items of clothing
and the like.
[0002] It is known that so-called magnetic closures have long been commercially available.
Such closures are generally provided by means of an annular permanent magnet which
is associated with a disk provided with a pin made of ferromagnetic material which
is substantially meant to concentrate the lines of magnetic flux, thus improving the
effectiveness of the magnetic closure.
[0003] These magnetic elements cannot be used in clothing because they include ferrous elements
which can be subject to rust arising from infiltrations of water and moisture, which
are inevitable in wet or dry cleaning.
[0004] EP 0 818 155, US-5 604 960 and DE 84 05 339 disclose a magnetic closure as defined
in the preamble of claim 1.
[0005] The aim of the present invention is to solve the above problem, by providing a magnetic
closure particularly for items of clothing and the like in which it is possible to
isolate the magnetic body hermetically, thus absolutely preventing infiltrations of
water and moisture.
[0006] Within the scope of this aim, a particular object of the present invention is to
provide a magnetic closure which can be easily connected to an item of clothing and
the like both by heat-sealing and the like and by sewing.
[0007] Another object of the present invention is to provide a magnetic closure in which
it is possible to adjust at will the force of the magnetic attraction between the
parts to be joined.
[0008] Another object of the present invention is to provide a magnetic closure which by
virtue of its particular constructive characteristics is capable of giving the greatest
assurances of reliability and safety in use and is also competitive from a purely
economical point of view.
[0009] This aim, these objects and others which will become apparent hereinafter are achieved
by a magnetic closure particularly for items of clothing and the like, according to
the invention, as defined in claim 1.
[0010] Further characteristics and advantages of the present invention will become apparent
from the following detailed description of a preferred but not exclusive embodiment
of a magnetic closure particularly for items of clothing and the like, illustrated
only by way of non-limitative example in the accompanying drawings, wherein:
Figure 1 is a schematic exploded perspective view of the elements that compose the
magnetic closure according to the present invention;
Figure 2 is a view of one side of the assembled magnetic closure;
Figure 3 is a view of the assembled magnetic closure, taken from the other side;
Figure 4 is a sectional exploded view of the magnetic closure according to the invention;
Figure 5 is a sectional view of the magnetic closure;
Figure 6 is a schematic view, in the open position, of a magnetic closure to be applied
to flaps of an item of clothing and the like;
Figure 7 is a schematic view of the magnetic closure in the closure position.
[0011] With reference to the above figures, the magnetic closure particularly for items
of clothing and the like, according to the invention, comprises a magnetic body, generally
designated by the reference numeral 1, which is constituted by a permanent magnet
2 advantageously associated with a metal plate 3 from which a pin 4 protrudes which
is meant to concentrate the magnetic flux.
[0012] The particularity of the invention is constituted by the fact that the magnetic body
1 is accommodated in a seat 5 which is closed hermetically with respect to the outside
and is formed in practice by two plate-like elements 10 and 11 provided by means of
calendered plastic materials which form a thin layer.
[0013] The plate-like elements 10 and 11 are mutually coupled at least in a region 12 that
surrounds the magnetic body 1 so as to form the seat 5, which is perfectly hermetically
closed.
[0014] This coupling, which is for example provided with an annular configuration 12, is
achieved by heat-sealing, ultrasound welding, gluing or the like, thus achieving the
stable coupling of the two plate-like elements.
[0015] Advantageously, the face la of the magnetic body 1, which is the face that can be
coupled to another similar magnetic body or to a ferromagnetic body provided in the
other flap to be joined, is substantially flat, so as to avoid producing edges which
protrude in the region of mutual coupling; accordingly, the seat 5 is formed in practice,
in its lateral portions, by the plate-like element 11 with reference to the specific
example.
[0016] Advantageously, the plate-like elements 10 and 11 are made of PVC or other calendered
plastic materials and this solution is ideally suited for applying the magnetic closure
to items of clothing or in any case to elements which allow application by heat-sealing
or ultrasound welding.
[0017] If the closure must be applied by sewing, the use of plate-like elements made of
calendered plastic materials is not advisable since sewing can trigger breakage.
[0018] In order to facilitate the application of the magnetic closure by sewing, one of
the plate-like elements, preferably the plate-like element 10 that does not constitute
the region for coupling to the other magnetic closure, is provided by means of a fabric
coated with PVC or polyurethane or other plastic material which is meant to waterproof
it.
[0019] The use of two plate-like elements 10 and 11 made of fabrics coated with plastic
material is not advisable because their coupling generates wrinkles which reduce friction
and accordingly reduce the adhesion force, which is instead optimum if the coupling
surfaces are perfectly smooth, as indeed occurs with smooth calendered plastic parts,
whose thickness allows to adjust the attraction force at will.
[0020] The magnetic closure as described can be advantageously provided by using strips
of material, designated by the reference numeral 20 in Figures 6 and 7, in which the
various magnets are already inserted at preset distances and which can be easily connected
to an item of clothing, as shown schematically in Figures 6 and 7.
[0021] From the above description it is thus evident that the invention achieves the intended
aim and objects, and in particular the fact is stressed that a magnetic closure is
provided which allows to confine the permanent magnet within a hermetically closed
region which gives optimum assurances of mechanical strength also by virtue of the
refinement of leaving the coupling faces substantially flat, in practice forming the
hermetically closed seat by using the material of the other coupled plate-like element.
[0022] Moreover, the provision of the magnetic body by means of a magnet that is permanently
associated to plate-like elements made of ferromagnetic material which concentrates
the magnetic-flux lines, allows to achieve a magnetic closure in which the flux lines
are directed substantially toward the outside and do not have significant emissions
at the rear of the item that could be in constant contact with the user's body.
[0023] The invention thus conceived is susceptible of numerous modifications and variations,
all of which are within the scope of the inventive concept.
[0024] All the details may also be replaced with other technically equivalent elements.
[0025] In practice, the materials employed, as well as the dimensions and the contingent
shapes, may be any according to requirements. to requirements.
[0026] The disclosures in Italian Patent Application No. MI97A002763 from which this application
claims priority are incorporated herein by reference.
[0027] Where technical features mentioned in any claim are followed by reference signs,
those reference signs have been included for the sole purpose of increasing the intelligibility
of the claims and accordingly, such reference signs do not have any limiting effect
on the interpretation of each element identified by way of example by such reference
signs.
1. A magnetic closure for items of clothing and the like, comprising a magnetic body
(1) which can be accommodated like, comprising a magnetic body which can be accommodated
in a seat (5) which is closed hermetically and is formed by two plate-like elements
(10,11) mutually coupled at least in a region which peripherally surrounds said magnetic
body (1) and is strictly adjacent to said magnetic body (1), said coupled plate-like
elements being applicable to at least one of a couple of flaps to be joined, characterized in that said plate like elements (10,11) are constituted by sheets of calendered plastics
which form a thin layer, one of said plate like elements, which is to be arranged
facing an opposite flap, having, at a region corresponding to the seat (5) of said
magnetic body (1), a lower thickness with respect to regions thereof adjacent to said
magnetic body, to increase the magnetic flux of said magnetic body.
2. The magnetic closure according to claim 1,
characterized in that said plate-like elements (10,11) are applicable to each one of the flaps to be joined.
3. The magnetic closure according to claim 1,
characterized in that said region that peripherally surrounds said magnetic body (1) has an annular shape.
4. The magnetic closure according to claim 1,
characterized in that one of said plate-like elements (10,11) is constituted by a fabric coated with a
layer of plastic material.
5. The magnetic closure according to claim 1,
characterized in that the plate-like element (10,11) of one part of the magnetic closure that can be coupled
to the other plate-like element (10,11) of the other part of the magnetic closure
is substantially flat at a region affected by the magnetic body, said seat being delimited
laterally by the other coupled plate-like element.
6. The magnetic closure according to claim 1,
characterized in that said plate-like elements are provided by strips (20) preset for application to an
item of clothing with the magnetic bodies inserted at preset distances.
1. Magnetverschluss für Kleidungsstücke und dergleichen, umfassend einen Magnetkörper
(1), der in einem Sitz (5) untergebracht sein kann, der hermetisch geschlossen ist
und aus zwei plattenartigen Elementen (10, 11) ausgebildet ist, die mindestens in
einem Bereich miteinander gekoppelt sind, der den Magnetkörper (1) peripher umgibt
und zu dem Magnetkörper (1) streng benachbart ist, wobei die gekoppelten plattenartigen
Elemente an mindestens einer eines Paares zusammenzufügender Klappen anbringbar ist,
dadurch gekennzeichnet, dass die plattenartigen Elemente (10, 11) durch Bahnen aus kalandriertem Kunststoff gebildet
sind, die eine dünne Schicht bilden, wobei eines der plattenartigen Elemente, das
einer gegenüberliegenden Klappe zugewandt angeordnet sein soll, in einem Bereich,
der dem Sitz (5) des Magnetkörpers (1) entspricht, eine geringere Dicke aufweist als
die Bereiche, die dem Magnetkörper benachbart sind, um den Magnetfluss des Magnetkörpers
zu erhöhen.
2. Magnetverschluss nach Anspruch 1, dadurch gekennzeichnet, dass die plattenartigen Elemente (10, 11) an jede der zusammenzufügenden Klappen anbringbar
ist.
3. Magnetverschluss nach Anspruch 1, dadurch gekennzeichnet, dass der Bereich, der den Magnetkörper (1) peripher umgibt, eine Ringform aufweist.
4. Magnetverschluss nach Anspruch 1, dadurch gekennzeichnet, dass eines der plattenartigen Elemente (10, 11) durch ein Flächengebilde gebildet ist,
das mit einer Schicht aus Kunststoffmaterial überzogen ist.
5. Magnetverschluss nach Anspruch 1, dadurch gekennzeichnet, dass das plattenartige Element (10, 11) eines Teils des Magnetverschlusses, der mit dem
anderen plattenartigen Element (10, 11) des anderen Teils des Magnetverschlusses gekoppelt
werden kann, in einem Bereich, der vom Magnetkörper beeinflusst wird, im Wesentlichen
flach ist, wobei der Sitz seitlich durch das andere gekoppelte plattenartige Element
begrenzt ist.
6. Magnetverschluss nach Anspruch 1, dadurch gekennzeichnet, dass die plattenartigen Elemente (10, 11) durch Streifen (20) vorgesehen sind, die zum
Anbringen an ein Kleidungsstück mit in bestimmten Abständen eingesetzten Magnetkörpern
versehen sind.
1. Fermeture magnétique pour des articles vestimentaires et analogues, comprenant un
corps magnétique (1) qui peut être reçu dans un logement (5) qui est hermétiquement
fermé et est formé par deux éléments de forme plate (10, 11) mutuellement accouplés
au moins dans une région qui entoure périphériquement ledit corps magnétique (1) et
est strictement adjacente audit corps magnétique (1), lesdits éléments accouplés de
forme plate pouvant être appliqués sur au moins une paire de pans à réunir,
caractérisée en ce que lesdits éléments de forme plate (10, 11) sont constitués par des feuilles de matière
plastique calandrée qui forment une couche mince, l'un desdits éléments de forme plate,
qui doit être agencé en face d'un pan opposé, ayant, au niveau d'une région correspondant
au logement (5) dudit corps magnétique (1), une épaisseur plus faible par rapport
à ses régions adjacentes audit corps magnétique, pour augmenter le flux magnétique
dudit corps magnétique.
2. Fermeture magnétique selon la revendication 1,
caractérisée en ce que lesdits éléments de forme plate (10, 11) peuvent être appliqués à chacun des pans
à réunir.
3. Fermeture magnétique selon la revendication 1,
caractérisée en ce que ladite région qui entoure périphériquement ledit corps magnétique (1) a une forme
annulaire.
4. Fermeture magnétique selon la revendication 1,
caractérisée en ce que l'un desdits éléments de forme plate (10, 11) est constitué par un tissu revêtu d'une
couche de matière plastique.
5. Fermeture magnétique selon la revendication 1,
caractérisée en ce que l'élément de forme plate (10, 11) d'une partie de la fermeture magnétique, qui peut
être accouplé à l'autre élément de forme plate (10, 11) de l'autre partie de la fermeture
magnétique, est sensiblement plane au niveau d'une région concernée par le corps magnétique,
ledit logement étant délimité latéralement par l'autre élément accouplé de forme plate.
6. Fermeture magnétique selon la revendication 1,
caractérisée en ce que lesdits éléments de forme plate sont fournis par des bandes (20) prédéfinies pour
l'application à un article vestimentaire avec les corps magnétiques insérés à des
distances prédéfinies.

