(12) Oversettelse av europeisk patentskrift

Transkript

1 (12) Oversettelse av europeisk patentskrift (11) NO/EP B1 (19) NO NORGE (1) Int Cl. Patentstyret F41H 1/02 (06.01) F41H /04 (06.01) (21) Oversettelse publisert (80) Dato for Den Europeiske Patentmyndighets publisering av det meddelte patentet (86) Europeisk søknadsnr (86) Europeisk innleveringsdag (87) Den europeiske søknadens Publiseringsdato () Prioritet , FR, (84) Utpekte stater AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR (73) Innehaver Compagnie Européenne de Développement Industriel (C.E.D.I.), 34 avenue des Champs Elysées, 7008 Paris, FR-Frankrike (72) Oppfinner Le Carpentier, Jérôme, La Haute Equerre, Saint Aubin du Tennery, FR- Frankrike (74) Fullmektig Tandbergs Patentkontor AS, Postboks 170 Vika, 0118 OSLO, Norge (4) Benevnelse Bulletproof vest comprising reinforced panels (6) Anførte publikasjoner EP-A DE-U US-A US-A US-A US-B

2 1 The present invention relates to organs for the protection of the human body, in particular against bullets and/or blows, in particular in the form of garments, for example a bulletproof vest. One already knows from European patent EP in the name of the applicant, a bulletproof vest which is light and which allows stopping bullets while limiting as much as possible the deformation of a part of the vest situated against the body, allowing to avoid or at least decrease body trauma. 1 This bulletproof vest of the prior art, which constitutes a starting point for the present invention, is made of a stacking of aramid fabric panels, the stacking of aramid fabric panels comprising at least a first panel or a substacking of first panels and a second panel or a substacking of second panels, the or each second panel being reinforced by a respective series of reinforcing threads, each thread of the respective series of threads of the second panel passing alternatively from one side of the second panel to the other side of the second panel without passing neither through a second panel nor through a first panel. 2 The present invention aims at improving this organ of protection of the human body against bullets, and notably the bulletproof vest of the prior art, by proposing a bulletproof vest of the type mentioned above which is even more efficient for protecting the person wearing the organ, without sacrificing the comfort of wear and notably without the organ being thicker or more rigid than organs of the prior art.

3 2 As per the invention, the organ for protection is as defined in claim 1. In US , there is disclosed a bulletproof vest comprising on the external side a plurality of aramid fabric sewn together by threads common to all the fabrics of the plurality of fabrics. Preferably, the second panel or the sub-stacking of second panels is positioned the most to the outside in the panels stacking. 1 Surprisingly, by placing the second panel(s) (which are each made of an aramid panel through which a series of reinforcing threads is passing, the threads passing from one side and the other of the panel alternatively by being in contact with the upper and lower surfaces of their respective panel) on the external side relative to the first panel(s), there is obtained a particularly efficient protection against bullets. In the same time, the organ, notably the vest, is highly flexible and is easy and pleasant to wear. In particular, the thickness of the vest is small. Preferably, there is provided in the second sub-stacking between 3 and second panels and/or there is provided in the first sub-stacking between and 1 first panels. 2 Preferably, for each second panel, the threads of the respective series of reinforcing threads extend themselves parallel the ones to the others, and in particular in the vertical direction, as defined when the vest is worn. As per a preferred embodiment of the present invention, the panels of the panels stacking, made of both the first

4 3 and second panels, are maintained together by sewing or bonding threads, in particular at the peripheral edges of the panels. As per a preferred embodiment of the present invention, each panel is made of an aramid fibers fabric, preferably embedded in a layer of thermoplastic material. Preferably, the weight of a first panel is comprised between 0 and 400 g/m², notably between 0 and 0 g/m², for example being equal to about 232 g/m². Preferably, its thickness is comprised between 0. and 0. mm, notably between 0.1 and 0.4 mm, for example being equal to 0.3 mm. 1 The first panels may in particular be made from fibers in a para-aramid based material (poly-para-phenyleneterephtalamide), known under the name of Goldflex (registered trademark) sold by the company Honeywell. 2 Concerning the second panels, these are also made of aramid fiber fabric. Preferably, their weight is comprised between 0 and 700 g/m², notably between 400 and 600 g/m², for example being equal to about 00 g/m². Their thickness is comprised between 0. and 0.60 mm, notably between 0. and 0.0 mm, for example being equal to 0.4 mm or 0.46 mm. These may in particular be made of Twaron sold by the company Teijin or in Kevlar, sold by the company DuPont. Other analogous materials (spider silk, and so on..) are also possible for the first or second panels. Preferably, the reinforcing threads are made of PES and preferably have a titer count comprised between 60 and Dtex, notably between 80 and 1, for example 1.

5 4 Referring to the drawings, herebelow is described a preferred embodiment of the present invention, given only as an example. Figure 1 is a perspective view of two sub-stackings of first and second panels; Figure 2 represents the two sub-stackings of Figure 1 mounted and stacked the one on the other in a stacking housed in a receiving pocket made in a bulleproof vest ; and Figure 3 is a view in longitudinal section along line A-A of the front panel of the sub-stacking of second panels of Figure In Figure 1, there is represented respectively on the left and on the right a sub-stacking of first panels 1 and a sub-stacking of second panels 2. The first panels are each made of an aramid fibers fabric, with one ply or more, notably in fibers of Goldflex, embedded in a layer of thermoplastic material. Each first panel is therefore made unitary and in one piece by the coating of thermoplastic material. The sub-stacking comprises here 12 first panels. On the right side of Figure 1, there is represented the sub-stacking of second panels 2. Each second panel is made of an aramid fabric, in particular based on Twaron fibers, coated of a layer of thermoplastic material which makes each second panel unitary and in one piece. Each second panel of the substacking of second panels 2 comprises a series of reinforcing threads 3. As represented in the Figure, each reinforcing thread 3 extends itself vertically, ie in the vertical direction when the vest is worn, as in Figure 2. Each thread 3 passes alternatively on one side and on the

6 other of the corresponding second panel, staying substantially in contact therewith, notably with the external and internal faces thereof. The gap between two vertical threads is comprised between 3 and mm, preferably between 4 and 6 mm, and notably is equal to about mm. For a panel having a height of about 46. cm for a width of about 3 cm, there are 6 reinforcing threads 3. Each second panel 2 is an aramid fiber fabric, notably in Twaron, which is a registered trademark of the company Teijin. One could however also make it in Kevlar, a registered trademark of the company DuPont. 1 The assembly made of the aramid fabric and of the reinforcing threads may be embedded in a thermoplastic material. Alternatively, the aramid fabric may be embedded in a layer of a thermoplastic material and the reinforcing threads be stitched in the assembly made of the fabric and the layer. The stacking made of the two sub-stackings 1 and 2 disposed the one next to the other is placed in a pocket formed in the bulletproof vest 6. The sub-stacking of second panels is disposed on the external side relative to the sub-stacking of first panels. 2 As can be seen in Figure 3, the reinforcing thread 3 passes from one side to the other of the second panel without passing through other panels. The thread is substantially in contact alternatively with the front face of the panel and its rear face. Furthermore, the assembly made of the panels 1 and 2 formed by the two sub-stackings of first and second panels are bonded together by sewn threads 4 passing

7 6 through all the first and second panels so as to bond them together. These threads 4 extend themselves preferably at the edges of the panels, notably as represented in the figure.

8 7 Patentkrav EP Element for å beskytte menneskekroppen mot kuler og/eller slag, spesielt i form av et plagg, for eksempel en skuddsikker vest, bestående en stakk av lag laget av et aramid vev, hvor stakken av lag av aramid vev omfatter et første lag (1), eller en første delstakk av første lag, og en andre delstakk av andre lag, hvor hvert andre lag blir forsterket med en serie av respektive forsterkningstråder, hvor hver tråd (3) av nevnte trådserie til et respektivt andre lag passerer vekslende fra den ene side av nevnte respektive andre lag til den andre siden av nevnte respektive andre lag uten å passere gjennom det andre eller et annet lag, og heller ikke gjennom et første lag, karakterisert ved at delstakken til de andre lag settes mellom det første laget eller delstakken til de først lag og den siden som vender mot utsiden av det beskyttende element. 2. Element ifølge krav 1, karakterisert ved at delstakken til de andre lag befinner seg ytterst i stakken av lag. 3. Element ifølge krav 1 eller 2, karakterisert ved at det i andre delstakk er anbrakt mellom 3 og andre lag. 4. Element ifølge krav 1, 2 eller 3, karakterisert ved at første delstakk omfatter mellom og 1 første lag Element ifølge ett av kravene 1 til 4, karakterisert ved at for hvert andre lag, trådene til den respektive serie av forsterkningstråder forløper parallelt med hverandre, spesielt i vertikal retning, slik elementet blir båret. 6. Element ifølge ett av kravene 1 til, karakterisert ved at vekten av et første lag er omfattet mellom 0 og 400 g/m 2, særlig mellom 0 og 0 g/m 2, for eksempel er lik omtrent 232 g/m Element ifølge ett av kravene 1 til 6, karakterisert ved at vekten av hvert andre lag er omfattet mellom 0 og 700 g/m 2, særlig 400 og 600 g/m 2, for eksempel er lik 00 g/m Element ifølge ett av kravene 1 til 7, karakterisert ved at forsterkningstrådene er i PES og fortrinnsvis har en dtex teller omfattet mellom 60 og, spesielt mellom 80 og 1, for eksempel 1.

9 1 NO/EP231227