Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
  • B60C19/00—Tyre parts or constructions not otherwise provided for
  • B60C19/12—Puncture preventing arrangements
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
  • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
  • B29C73/00—Repairing of articles made from plastics or substances in a plastic state, e.g. of articles shaped or produced by using techniques covered by this subclass or subclass B29D
  • B29C73/16—Auto-repairing or self-sealing arrangements or agents
  • B29C73/18—Auto-repairing or self-sealing arrangements or agents the article material itself being self-sealing, e.g. by compression
  • B29C73/20—Auto-repairing or self-sealing arrangements or agents the article material itself being self-sealing, e.g. by compression the article material only consisting in part of a deformable sealing material
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
  • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
  • B29D30/00—Producing pneumatic or solid tyres or parts thereof
  • B29D30/06—Pneumatic tyres or parts thereof (e.g. produced by casting, moulding, compression moulding, injection moulding, centrifugal casting)
  • B29D30/0681—Parts of pneumatic tyres; accessories, auxiliary operations
  • B29D30/0685—Incorporating auto-repairing or self-sealing arrangements or agents on or into tyres
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
  • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
  • B63B7/00—Collapsible, foldable, inflatable or like vessels
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
  • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
  • B29D30/00—Producing pneumatic or solid tyres or parts thereof
  • B29D30/06—Pneumatic tyres or parts thereof (e.g. produced by casting, moulding, compression moulding, injection moulding, centrifugal casting)
  • B29D30/0681—Parts of pneumatic tyres; accessories, auxiliary operations
  • B29D30/0685—Incorporating auto-repairing or self-sealing arrangements or agents on or into tyres
  • B29D2030/0686—Incorporating sealants on or into tyres not otherwise provided for; auxiliary operations therefore, e.g. preparation of the tyre
  • B29D2030/0695—Incorporating sealants on or into tyres not otherwise provided for; auxiliary operations therefore, e.g. preparation of the tyre the sealant being in the form of one wide strip, e.g. a patch
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T152/00—Resilient tires and wheels
  • Y10T152/10—Tires, resilient
  • Y10T152/10495—Pneumatic tire or inner tube
  • Y10T152/10522—Multiple chamber
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T152/00—Resilient tires and wheels
  • Y10T152/10—Tires, resilient
  • Y10T152/10495—Pneumatic tire or inner tube
  • Y10T152/10522—Multiple chamber
  • Y10T152/10531—Cylinder and piston
  • Y10T152/1054—Mutually free walls
  • Y10T152/10567—Mutually free walls with simultaneous inflating means
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T152/00—Resilient tires and wheels
  • Y10T152/10—Tires, resilient
  • Y10T152/10495—Pneumatic tire or inner tube
  • Y10T152/10666—Automatic sealing of punctures [e.g., self-healing, etc.]
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T152/00—Resilient tires and wheels
  • Y10T152/10—Tires, resilient
  • Y10T152/10495—Pneumatic tire or inner tube
  • Y10T152/10666—Automatic sealing of punctures [e.g., self-healing, etc.]
  • Y10T152/10675—Using flowable coating or composition
  • Y10T152/10684—On inner surface of tubeless tire
  • Y10T152/10693—Sealant in plural layers or plural pockets

Definitions

• the present invention relates to the field of flexible flexible enclosures designed to resist perforation.
• the document WO0218158 describes a antiperforation barrier positioned between the tread and the textile reinforcement of the envelope.
• the antiperforation barrier acts as a protective wall against a penetrating or shocking object and is able to withstand the limit of its resistance to breakage. Positioning the tire architecture and its adherence to the surrounding layers at that location keeps it in position. This barrier provides slightly improved protection only against attacks of small amplitude of deformation, which is insufficient to prevent most perforations.
• a complex device consisting of a semi-rigid structure, fixed to the wheel and provided to support the perforated and collapsed tire to maintain a minimum height of the pneumatic chamber can be inserted into the pneumatic chamber and allow the vehicle to join to a speed limited to about 80 km / h a service point supposed to be equipped with special equipment to disassemble and repair this type of tire known as "Pax
• US 5,785,779 proposes to arrange between the inner face of the tire under its tread and the inner tube a puncture-resistant tape consisting of a strip of synthetic material.
• the puncture tape acts as a protective barrier for the inner tube, which can be effective against small, small, pointed objects such as thorns, as long as the puncture tape was positioned correctly and remained in place.
• the puncture-resistant tape reduces tire performance and also causes relatively frequent internal abrasion.
• the anti-puncture ribbons apply rather in the field of bicycle tires.
• the present invention aims to overcome the disadvantages mentioned above.
• the present invention aims to provide a flexible enclosure equipped with improved anti-puncture means adapted to the many applications of flexible speakers.
• the present invention aims to provide improved anti-puncture capabilities to vehicle tires, flexible tanks, inflatable boats, etc.
• a flexible enclosure comprises a working strip and flanks, defining an envelope.
• the flexible enclosure comprises a waterproofing membrane at least partially lining the envelope, the sealing membrane comprising an elastic material and an anti-perforation reinforcement, the sealing membrane being free with respect to the working strip and attached to an end opposite the work strip.
• the waterproofing membrane In case of perforation of the envelope to the right of the waterproofing membrane, the waterproofing membrane is able to move inside the flexible enclosure by marrying at least partly the shape of the foreign body having perforated the envelope, thus reducing the risk of perforation of the flexible enclosure.
• the waterproofing membrane is able to move away from the work strip while absorbing energy.
• the waterproofing membrane is attached to at least a portion of the sidewalls.
• the enclosure can form an inflatable element, for example a pneumatic boat.
• the waterproofing membrane is impervious to fluids, gases and / or liquids.
• the enclosure comprises heels delimiting the sidewalls, the sealing membrane being attached to at least a portion of the beads.
• the waterproofing membrane is free with respect to at least one sidewall.
• the enclosure can form a vehicle tire.
• the waterproofing membrane may be attached to the beads and free from the sidewalls and the tread to protect the sidewalls and the tread.
• the sealing membrane can be fixed to the sidewalls and free from the tread to protect the tread.
• the waterproofing membrane can be attached to the heels and the tread and free from the sidewalls for. protect the flanks.
• the enclosure may form a tank of rectangular shape or roll-shaped.
• the waterproofing membrane may be secured near the base and the top and free from the projectile-exposed work-side flanks to protect said flanks.
• the sealing membrane can be fixed to the ends of the cylinder and free with respect to the surface of revolution forming a working band, and, if appropriate, rolling, exposed to projectiles and sharps to protect the surface of revolution.
• the developed length of the meridian of the waterproofing membrane is greater than that of the meridian of the flexible enclosure. It promotes the displacement of the sealing membrane under the effect of a foreign body having perforated the envelope.
• the developed length of the meridian of the waterproofing membrane is approximately 10 cm greater than that of the meridian of the enclosure.
• the developed length of the meridian of the waterproofing membrane may be approximately 15 cm greater than that of the meridian of the enclosure, the additional mass being small relative to the total mass of the tire.
• the flexible enclosure comprises an additional sealing membrane sealing at least part of the interior of the first waterproofing membrane, the additional sealing membrane comprising an elastic material and an anti-adhesive reinforcement. perforation, the additional sealing membrane being at least partly free from the first sealing membrane and fixed at an end opposite the tread. The risk of perforation is further reduced.
• a vehicle tire provided for a speed of slow rotation for example a pneumatic tire for heavy goods vehicles, agricultural machinery or armored vehicles
• two or three additional sealing membranes may be provided, the additional mass being small compared with the total mass of the tire.
• the flexible enclosure comprises a plurality of balls arranged in a bed between the working strip and the sealing membrane.
• the relative displacement of the sealing membrane with respect to the working strip is facilitated by rotation of the balls.
• the friction of the sealing membrane with respect to the working strip is reduced hence reducing the risk of perforation of the waterproofing membrane.
• the beads may have a diameter of between 0.2 and 3 mm.
• the beads may comprise glass or ceramics, for example of the Zirmi.l® type from the company SEPR.
• the balls are lubricated.
• the lubricant may include molybdenum disulfide, graphite, silicone, talc, PTFE, etc.
• the waterproofing membrane comprises an elastomer, preferably halobutyl.
• the sealing membrane comprises at least one material for adhering the antiperforation reinforcement to the elastic material.
• the elastic material covers at least one of the faces of the anti-perforation armature.
• the waterproofing membrane may comprise a butyl rubber and / or halobutyl, a nitrile, a halogenated nitrile, a polychloroprene, a chlorosulfonated polyethylene, for example Hypalon®, a styrene-butadiene rubber (SBR), a silicone, a fluorocarbon elastomer, for example Viton®, an ethylene propylene diene monomer rubber (EPDM), etc. according to the intended application to provide an effective and durable barrier to gaseous or liquid fluids, said membrane lining the entire interior of the enclosure or not.
• a butyl rubber and / or halobutyl a nitrile, a halogenated nitrile, a polychloroprene, a chlorosulfonated polyethylene, for example Hypalon®, a styrene-butadiene rubber (SBR), a silicone, a fluoro
• the anti-perforation reinforcement of the waterproofing membrane may be of the high-strength and / or non-woven textile type, based on high-tenacity fibers such as aramid fibers, especially para-aramids, for example Kevlar®, or meta-aramids, for example tyomex®, made of very high molecular weight polyethylene, for example Dyneema® or Spectra®, made of liquid crystal polymer, for example Vectran®, made of glass, polyamide, polyester or cotton etc. or equivalents or a mixture thereof as a function of minimum and maximum operating temperatures, resistance to repeated high frequency bending, pressure, etc.
• the reinforcement may also comprise or be doubled by polyurethane-type materials with a much higher puncture resistance than the elastic material of the waterproofing membrane.
• the anti-perforation reinforcement is treated according to a bonding technique so that it can subsequently be strongly bonded and as closely as possible to the elastic material, the adhesion between the anti-perforation reinforcement and the elastic material. being as high as possible in order to constitute an armed and yet flexible and high cohesion composite membrane.
• the anti-perforation reinforcement is covered on at least one face by the elastic material, in particular the face in contact with the interior of the envelope in order to present a smoothest finishing appearance. possible.
• the sealing membrane may be free with respect to the tread and may be attached to the heel and / or sidewall of the tire, the perforations most often occurring through the tread .
• the waterproofing membrane will be free with respect to the sidewall of the tire and may be fixed on the heels and / or on the inside of the tread * punctures often occurring by perforation of the sidewall by ballistic projectile in the case of military vehicles or by stones or sharp woods in the case of agricultural vehicles. In both cases, it is possible to provide a tire whose sealing membrane is bonded to the bead and remains free with respect to the sidewall and the tread.
• the fact of providing a plurality of sealing membranes having the highest possible meridian length makes it possible to increase the probability of an offset of the holes of the sealing membranes after puncture, making it possible to maintain a certain degree of tightness.
• This characteristic is particularly interesting in the case of tires for military use.
• the hole in the The first sealing membrane may be circumferentially or laterally offset relative to the hole in the sidewall of the tire and the hole in the second sealing membrane may also shift relative to the hole in the first sealing membrane. This substantially increases the probability of keeping a correct inflation of the tire despite a projectile perforation.
• the dimensioning of the length of the meridian of the sealing membranes must increase, from the first membrane in contact with the inside of the envelope to the last membrane.
• the ballistic projectile is deflected from its initial trajectory, thereby promoting the phenomenon of misalignment of perforations of the perforated membranes and thus facilitating automatic clogging of the perforations.
• the number and strength of waterproofing membranes can be designed to withstand conventional projectiles, for example 7.62 mm or 12.7 mm at usual combat distances.
• the effective deflection of the trajectory of the projectile may be due to the resistance generated by the combination of the variable, progressive and substantially omnidirectional reactive force of the internal pressure of the pneumatic chamber on the one hand and, on the other hand, the resistance of the constituent materials of said membranes.
• a layer of microspheres may be provided in an interface between sealing membranes, a pasty lubricant, for example based on silicone in another interface between sealing membranes, and a dry lubricant, for example molybdenum disulfide in yet another interface between waterproofing membranes.
• the balls arranged in a bed between the working strip and the sealing membrane may also be arranged between two sealing membranes.
• the beads may comprise polyamide-imide, polyacetal, polyamide or the like.
• the additional mass to be provided is of the order of 5 to 30 grams / dm 2 , for example 23 grams per dm 2 to allow some space between the beads.
• Part of the kinetic energy of the perforating or cutting object is, at the first stage of the perforation attempt, partially absorbed by the penetration resistance of the materials constituting the outer wall of the envelope.
• said perforating or cutting object In the second stage of the penetration attempt, and insofar as the perforating or cutting object passes through the outer wall of the envelope, said perforating or cutting object then meets the sealing membrane which is free with respect to the inner wall of the envelope.
• the adhesion of the sealing membrane to the inner wall of the casing is proportional to the internal pressure of the enclosure and also depends on the sum of the surfaces of the spherical caps of the balls.
• the presence of the balls between the inner wall of the envelope and the reinforced waterproofing membrane allows the latter to move laterally with much greater ease than if the inner wall of the envelope and the sealing membrane were in direct contact. Since a spherical shape is by definition the cause of easy omnidirectional displacements, the displacement resistance of the sealing membrane is substantially reduced to a magnitude proportional to the internal pressure of the enclosure.
• the reinforced waterproof membrane is therefore able to deform very easily thanks to its lateral mobility and despite the internal pressure of the envelope.
• R n the resistance to perforation of the antiperforation reinforcement
• Rp the resistance to the perforation of the envelope, If E> R P , and ER p -PV-F g -F r -A ⁇ R m + R n , there is no perforation of the membranes of sealing
• P the internal pressure of the pneumatic chamber
• n the number of waterproofing membranes
• V the volume displaced inside the pneumatic chamber.
• the beads may be treated with lubricants.
• the beads may be embedded in pastes composed of molybdenum disulfide, graphite, silicone, or talc according to the intended application. It is also possible to coat the beads with specific products developed such as a coating based on polytetrafluoroethylene or equivalent.
• polyimide beads containing at least partly graphite and polytetrafluoroethylene such as Torlon 4275 can allow a significant reduction in the need for lubricants, or even their removal.
• FIG 1 is a meridian sectional view of a pneumatic enclosure
• FIG. 2 is a half-view in meridian section of a pneumatic enclosure
• FIG 3 is a partial cross-sectional view of a pneumatic boat bead; f and FIG 4 is a partial cross-sectional view of a bladder.
• the tire 1 is intended for a vehicle, for example a particular car, and has been shown in the normal state in the left half of the figure and after an attempt to perforate the tire. right half of the figure.
• the tire 1 comprises a tread 2 intended to be in contact with the ground, sidewalls 3 and heels 4, the sidewalls 3 and the heels 4 being symmetrical with respect to a radial plane.
• At least one belt ply 5 disposed on an inner face of the tread 2 and a carcass ply 6 extending on an inner face of the belt ply 5, flanks 3 and coming into the heel 4 to make a loop remaining open.
• the belt ply 5 is circular in shape.
• the carcass ply 6 is of radial shape and extends from one heel 4 to the other heel 4 with folded ends in each heel 4.
• a reinforcing layer 7 is disposed between the sidewall 3 and the heel 4.
• filling layer 8 is disposed in the fold of the carcass ply 6.
• a layer 9 forms the heel by surrounding the carcass ply 6.
• the tire 1 further comprises an antiperforation 1 1 system comprising an elastic layer 12 fixed on the inner face of the sidewall 3 and may be located in the extension of the layer 9 of the heel 4, an elastic layer 14 which can be made in the same material that the elastic layer 12, for example an elastomer, forming the inner face of said anti-perforation system 11 substantially to the right of the tread 2.
• the anti-perforation system 11 is completed by an anti-perforation reinforcement 15 and a layer of balls
• the bead layer 16 is in contact with the inner face of the tire, for example in the form of a non-visible sealing layer because of its small thickness.
• the anti-perforation armature 15 is disposed between the elastic layer 14 and the layer of balls 16.
• the anti-perforation armature 15 and the elastic layer 14 are firmly fixed and closely to each other in order to get excellent cohesion.
• the balls are free between the inner face of the tire and the antiperforation frame 15.
• the layers 14 and 15 are free from the casing, substantially at the level of the tread 2.
• an excess length of the layers 14, 15 and 16 is provided to form a fold 17 substantially at the junction between the tread 2 and the sidewall 3, for example near the elastic layer 12.
• the fold 17 thus forms a length reserve of the layers 14 to 16 and allows said layers 14 to 16 to move as shown in the right part of the figure.
• a nail 18 came to be inserted in the tread 2 and passed through the belt plies 5 and the carcass ply 6. However, the nail 18 could not perforate the anti-perforation system 11 which conformed to the shape of said nail 18 by moving laterally in the direction of the arrow to come to form a protuberance 19 around the end of the nail 18.
• the layer of balls 16 facilitates the movement which causes an unfolding and therefore a deletion of the fold 17. In d In other words, the excess length of the layers 14 to 16 has moved along the inner face of the envelope in the lateral direction to fit the shape of the nail 18 without perforation.
• the anti-perforation armature 15 is able to withstand a relatively high force applied on a small surface and the elastic layer 14 seals between the inside of the tire 1 which will generally be inflated to a pressure well above atmospheric pressure. .
• the tire 1 is of the type intended for military or agricultural machines whose flanks are particularly exposed to perforation by projectiles, stones or sharp woods.
• the tire 1 envelope has a structure identical to that of the previous embodiment.
• the anti-perforation system 11 differs from the previous in that it comprises a layer 12 of elastic material attached to the heel 4, a layer 13 of elastic material attached to the inner face of the reinforcing layers 5, substantially to the right of the tread 2 and layers 14 to 16 of the same structure as in the previous embodiment but arranged on the internal face of the sidewall 3.
• the layers 14 to 16 are supplemented by an additional elastic layer 20 which can be made of the same material as the elastic layers 12, 13 and 14 arranged in contact with the layer of balls 16 on the opposite side to the antiperforation reinforcement 15, a reinforcement additional anti-perforation 21 disposed on the outer side of the elastic layer 20 and an additional row of balls 22 disposed between the additional anti-perforation reinforcement 21 and the inner face of the envelope.
• an additional elastic layer 20 which can be made of the same material as the elastic layers 12, 13 and 14 arranged in contact with the layer of balls 16 on the opposite side to the antiperforation reinforcement 15, a reinforcement additional anti-perforation 21 disposed on the outer side of the elastic layer 20 and an additional row of balls 22 disposed between the additional anti-perforation reinforcement 21 and the inner face of the envelope.
• a projectile 23 has perforated the flank 3, the additional anti-perforation layer 21 and the additional elastic layer 20 and causes the deformation of the inner sealing membrane formed by the elastic layer 14 and the anti-perforation reinforcement 15. in this way a high probability of stopping a projectile or piercing element before it has passed through the inner waterproofing membrane.
• the elastic layers 12, 13, 14 and 20 are made in continuity with each other and strongly bonded.
• an internal or external waterproofing membrane is provided with layers that are strongly bonded to each other, in particular the elastic layer 14 and the anti-perforation reinforcement 15.
• the fold 17 visible in Figure 1 has not been shown in Figure 2 since the tire 1 is seen under the reach of a projectile and therefore after deformation.
• the excess length of the inner and outer sealing membranes may be arranged near the heel 4, or on the contrary in the vicinity of the tread 2.
• a flange of the type illustrated in FIG. 1 and a antiperforation system of the type illustrated in FIG. 2 or by providing a relatively punctual attachment to the edge between the tread 2 and the flank 3, or by providing an attachment of the anti-perforation system on the heel 4 as shown in Figure 2.
• a flange In the embodiment illustrated in Figure 3, a flange
• the structure of the sealing system January 1 is similar to that illustrated in Figure 2 with an attachment of the anti-perforation system 11 by elastic layers 12 and 13 respectively at the top and the base of the inner face of the casing 26 .
• the anti-perforation layer 1 1 here comprises three sealing membranes composed of elastic layers 14, 20 and 28 and anti-perforation reinforcement respectively 15, 21 and 29 separated by a layer of dry lubricant 30 and a Teflon coating 31 respectively.
• a layer of balls 32 is disposed between the anti-perforation reinforcement 29 and the inner face of the casing 26 with balls made of nylon, in view of a low mass. This provides a very interesting ballistic protection for inflatable boats with a very low mass increase.
• the high number of sealing membranes, each composed of at least one elastic layer and at least one anti-perforation reinforcement makes it possible to increase the probability of an offset between the holes of the different membranes due to the perforation by the same perforating object. This probability of offset of the holes is further increased by the difference in the meridian lengths of the waterproofing membranes.
• the meridian length of the waterproofing membranes can be all the higher as the waterproofing membrane is close to the inside of the envelope. This gives a deformation capacity of the increasing sealing membranes from the outside to the inside. In other words, a projectile encounters sealing membranes that are more and more capable of deforming and consequently ensuring a staggered absorption of the energy that promotes the kinetic energy dissipation of the projectile.
• a flexible reservoir 33 for example designed to contain fuel.
• the flexible reservoir 33 comprises an envelope 34 inside which have been provided a antiperforation system 1 1 on the edge of said flexible reservoir 33 for protection against perforations caused by projectiles or cutting instruments.
• the anti-perforation system 1 1 comprises a membrane provided with an elastic layer 14, resilient fixing layers 12 and 13, an anti-perforation reinforcement 15 and a layer of balls 35, for example made of ceramic.
• the bead layer 35 offers excellent rolling capacity of the waterproofing membrane with respect to the casing 34. Hence a high deformation capacity of the anti-perforation system 1 1.
• the antiperforation system 1 1 can also be provided in a roll-shaped tank. In the case of a flexible tank, the anti-perforation reinforcement
• the liquid contained in the flexible reservoir 33 is not very compressible, the absorption of the energy due to a projectile is provided by the sealing membrane and by the overall deformation of the flexible reservoir, the envelope 34 itself may have a certain elasticity.
• the kinetic energy of a possible projectile can therefore be dissipated by the displacement of the sealing membrane, by the displacement of the liquid and by the displacement and the deformation of the envelope 34. Resistance of a bladder to sharp objects or projectiles.

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• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Chemical & Material Sciences (AREA)
• Combustion & Propulsion (AREA)
• Ocean & Marine Engineering (AREA)
• Tires In General (AREA)
• Materials For Medical Uses (AREA)
• Rigid Pipes And Flexible Pipes (AREA)
• Diaphragms And Bellows (AREA)
• Insulators (AREA)

Priority Applications (11)

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Publications (1)

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ID=37546994

Family Applications (1)

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Citations (4)

Family Cites Families (9)

• 2006
  • 2006-05-30 FR FR0604790A patent/FR2892056B1/fr not_active Expired - Fee Related
• 2007
  • 2007-05-30 ES ES07765965T patent/ES2376800T3/es active Active
  • 2007-05-30 CN CN2007800245469A patent/CN101495330B/zh active Active
  • 2007-05-30 PL PL07765965T patent/PL2064074T3/pl unknown
  • 2007-05-30 CA CA2696527A patent/CA2696527C/fr active Active
  • 2007-05-30 AT AT07765965T patent/ATE473114T1/de not_active IP Right Cessation
  • 2007-05-30 DE DE602007007635T patent/DE602007007635D1/de active Active
  • 2007-05-30 US US12/303,014 patent/US8240349B2/en active Active
  • 2007-05-30 JP JP2009512637A patent/JP5542435B2/ja not_active Expired - Fee Related
  • 2007-05-30 RU RU2008153063/11A patent/RU2438880C2/ru not_active IP Right Cessation
  • 2007-05-30 BR BRPI0712143-1A patent/BRPI0712143A2/pt not_active IP Right Cessation
  • 2007-05-30 EP EP07765965A patent/EP2064074B1/fr not_active Not-in-force
  • 2007-05-30 WO PCT/FR2007/000891 patent/WO2007138189A1/fr not_active Ceased

Patent Citations (4)

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