WO1990009909A1 - Boucle a liberation retardee automatique pour ceintures de securite de moyens de transport - Google Patents

Boucle a liberation retardee automatique pour ceintures de securite de moyens de transport Download PDF

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Publication number
WO1990009909A1
WO1990009909A1 PCT/IT1990/000016 IT9000016W WO9009909A1 WO 1990009909 A1 WO1990009909 A1 WO 1990009909A1 IT 9000016 W IT9000016 W IT 9000016W WO 9009909 A1 WO9009909 A1 WO 9009909A1
Authority
WO
WIPO (PCT)
Prior art keywords
safety belt
well
present
buckle
buckle according
Prior art date
Application number
PCT/IT1990/000016
Other languages
English (en)
Inventor
Isabella Domenica Marziale
Claudia Raffaela Marziale
Original Assignee
Isabella Domenica Marziale
Claudia Raffaela Marziale
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from IT8912201A external-priority patent/IT8912201A0/it
Priority claimed from IT8912202A external-priority patent/IT8912202A0/it
Application filed by Isabella Domenica Marziale, Claudia Raffaela Marziale filed Critical Isabella Domenica Marziale
Publication of WO1990009909A1 publication Critical patent/WO1990009909A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R22/00—Safety belts or body harnesses in vehicles
    • B60R22/32—Devices for releasing in an emergency, e.g. after an accident ; Remote or automatic unbuckling devices
    • B60R22/322—Devices for releasing in an emergency, e.g. after an accident ; Remote or automatic unbuckling devices using automatic actuating means
    • B60R22/324—Devices for releasing in an emergency, e.g. after an accident ; Remote or automatic unbuckling devices using automatic actuating means triggered by strong traction on the seat belt, e.g. with temporisation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R22/00—Safety belts or body harnesses in vehicles
    • B60R22/48—Control systems, alarms, or interlock systems, for the correct application of the belt or harness
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R22/00—Safety belts or body harnesses in vehicles
    • B60R22/48—Control systems, alarms, or interlock systems, for the correct application of the belt or harness
    • B60R2022/4808—Sensing means arrangements therefor
    • B60R2022/4816—Sensing means arrangements therefor for sensing locking of buckle

Definitions

  • This invention relates to an automatic, delayed- release buckle for safety belts of transportation means. More particularly, this invention relates to a buckle of the type mentioned above which is so struc ⁇ tured as to allow said belt to be unfastened or released automatically and safely, in a previously adjustable and delayed way. Moreover, this invention discloses a buckle of the type mentioned above which is provided with a self-locking action fastening system. In addition, the buckle according to the present invention can also be endowed with a device that allows with no possible mistake to ascertain that the belts in question had been actually employed by the passenger or driver as well as to determine the value of the speed of the transportation means at the very impacts in the course of the accident.
  • Difficulties in opening the belt could also be met with when the vehicle sinks into water or is turned upside down, or when it is in an unstable equilibrium condition, so that all attempts to reach the buckle in order to unfasten the belt might compromise the position of the vehicle itself.
  • a buckle which is the object of the present in ⁇ vention and which gives the user a full, complete and reliable protection, said buckle also allows the actual employment of the same as well as the impact speed in the accident to be faithfully recorded.
  • the buckle according to the pres ⁇ ent invention allows the belt to automatically unfasten when the vehicle stops after the accident, with the possibility of delaying the unfastening action, as well as of having a locking action at any impact motion during the whole course of the accident, of having an ordinary service closure endowed with a self-locking effect, i.e., under pulling conditions both the closure effects arid safety of said belt increase.
  • This invention suggests a device which is based on the principle of the alternate motion with recovery of the energy stored by one or more elastic members which are properly pre-arranged, as an effect of the kinetic energy of the pull exerted by the body mass of the person to the belt during impacts of the vehicle in the accident, and in which said energy stored is released in a calibrated way through one or more fluid-action damp ⁇ ing devices.
  • Said device can be supplied both sealed and unsealed, and it can be indifferently arranged from the functional viewpoint so as to operate in an axial direc- tion, or telescopically, or with a motion which is con ⁇ verted into other directions with respect to the direc ⁇ tion in which the belt is pulled.
  • a buckle for safety belts of transportation means said belt comprising of a closure hook which is coupled to the belt strap and can be introduced into a coupling channel obtained in the envelope of the buckle itself, said buckle comprising at least of a member for automatically hooking said hook, as well as means for unfastening said hooking member manually, at least a member for intercepting and automatically hooking said hooking or fastening member, first elastic means for pre-arranging said interception and automatic unfasten ⁇ ing member in the position of automatic unfastening, and second elastic means which can be compressed during the pulling stage of the belt between two opposite members, one of which is rigidly connected to the envelope of the buckle while the other one is integrally coupled to fastening stem-like or rod means of the buckle itself to the vehicle and is slidable inside said envelope, which means determine the coupling between said interception member and said fastening or hooking member with the consequent unfastening of the belt, during the stretching stage following the jerk step.
  • said hooking or fastening member can be made up of a shaped member which is hinged at the top portion, near the coupling channel mentioned above, to said envelope, said member being provided with cor ⁇ responding means which couple with an opening obtained in said hook, said member being also provided with push- ing elastic means that push the same in the transverse direction with respect to the coupling direction of the hook within said channel, the end of said member opposite to the hinged end being so shaped as to couple with said interception and automatic unfastening member.
  • the means for unfastening or releasing the safety belt hook manually will be preferably made up of an unfastening member which is hinged to said fastening member and is operated by a manual unfastening button that can be acted upon in a direction parallel to the coupling direction of the hook within the channel or in a direction at right angles to said coupling direction.
  • the envelope or the bearing structure of the buckle having a sleeve-like conformation or any other shape, can be of a monolithic-based, single-block structure, or of a sectioned, modular-base.d structure in one or more parts between: the hook-bearing member, the button-bear ⁇ ing member, a sleeve of any shape for the fluid-action delay or damping plenum and an interception and unfastening bush-bearing member, the whole assembly or parts of the same being joined to one another through restrain joints or through any other fastening means.
  • said interception and automatic unfastening member can be so shaped as to be made operative, through rotation or linear shift in any direction, after fastening the belt, or it can be so shaped as to allow the belt to be only fastened after prearranging the same.
  • the lower end of one or more hooking or fastening members is inserted into one or more housing spaces, as well as with inside surfaces of the housing spaces for realizing the engagement with said lower ends of the hooking or fastening members, at least a push chute plane for unhooking said hooking members, and obviously, knob members for prearranging the same, said first elastic means being loaded during said pre ⁇ arranging step, while the inside surfaces of one or more housing spaces are taken into the coupling position with the lower ends of one or more hooking members.
  • more than one chute plane and hooking member can be provided.
  • Said second elastic means will preferably be ar ⁇ ranged between a first corresponding member which is arranged in a slidable way inside said envelope at a position adjacent to said interception and automatic unfastening member, and provided with, a wall against which a first end of said second elastic means rests, and integrally coupled to said stem means, and a second corresponding member or wall which is fastened to said envelope, and which is the lower support of said second elastic means; during the pull or jerk stage, said second corresponding member shifts integrally with the belt strap, with the hook, with the hooking member and with the envelope, so compressing said second elastic means and causing the lower end of said hooking member to go out of said space, as well as the interception member to rotate or to shift linearly, due to the liberation of the energy stored by said first elastic means, said interception member preparing its chute plane to the interception of the lower end of the hooking member and, when the jerk stage is finished, the stretching of said second elastic means previously compressed causes the hooking member which is integral with
  • third elastic means can be provided within said coupling channel of the hook for expelling the hook following the manual or automatic unfastening of the belt.
  • Said second elastic means can be made up of one or more springs, or of one or more rubber members, or also of one or more members which are able anyway of being compressed, as well as of one or more hydraulic, pneu ⁇ matic or hydropneumatic members.
  • said buckle is provided with a structure for calibrating arid setting the time delay of the automatic unfastening.
  • said structure will be made up of a fluid-action plenum apparatus that makes use of any kind of fluid, in particular of an incompressible fluid, which apparatus is preferably arranged in correspondence to the lower portion of the buckle itself.
  • Said apparatus comprises of aseparating member which is rigid or which consists of a membrane, with respect to the buckle envelope, said member realizing a chamber in which the fluid is originally introduced, and a chamber for the transfer of the fluid, in which a number of first openings are provided for allowing the fluid to pass in the stretching stage of the buckle, and then in the compressing stage of said second elastic means, and at least a second opening is provided for the calibrated flow of the fluid during the stretching stage of said second elastic means; means for intercepting the fluid flow through said first openings; sealing means that warrant the fluid tightness; the calibration and setting of the time delay being mainly obtained by suitably ad- justing the size of said second opening and choosing the fluid in a suitable way.
  • the operation of the calibration and time delay structure can occur along a direction parallel or co ⁇ axial to jerk direction, or along any other direction. More particularly, said rigid or membrane-like sep- arating member can be integral with said stem-like or rod means.
  • the fluid flow interception means can consist of a valve kept in the position in which it closes said first openings by means of a number of fourth elastic means which push the valve itself in a direction opposite to that of the fluid flow through said first openings, or said interception means can consist of an elastic membrane or of expansion gaskets or lip seals involving a number of lips.
  • said buckle according to a further preferred embodiment of the buckle according to the present invention, it is pro ⁇ vided with a checking and recording device, and in par ⁇ ticular it is provided with an impression and linear or metrological detection device.
  • Said device will be made up of recording and check ⁇ ing plate means that can be inserted through a slit ob ⁇ tained in the buckle envelope and of such a thickness as to strike against a bottom inner wall of said slit; of rotatable means for locking said plate means in the pushing position in the coupling direction and striking against said bottom wall of the slit for the forward motion; and of a percussion member that marks said plate means following an accident.
  • a second slit of height less than the height of the first slit, with profile and height interference, is ar ⁇ ranged below said bottom wall of the first slit, the portion of said marked plate means inserting itself into said second slit by the action of said locking and pushing means, so prearranging the plate means for being further impressed.
  • the measurement of the impression allows the speed of the vehicle at the impact time to be detected.
  • Said percussion member can be integral with said first corresponding means of the second elastic means, so that such member impresses said plate means which are in turn integral with said second corresponding means, at the end of compressing of said second elastic means.
  • said plate means are made up of an indentable metallic material.
  • the buckle according to the present invention can also be provided with electric apparatuses for signalling the actual setting at work of the device on board, as well as with acoustic and/or light signalling devices and so on.
  • the buckle according to the pre- sent invention whose operation will be more evident after reading the disclosure of its embodiment illus ⁇ trated in the schematic examples of the enclosed fig ⁇ ures, allows the user to be free safely and surely from the bridling of the seat belt after an accident, when the vehicle is at rest in any position, so avoiding the possible loss of human lives deriving from the fact that safety belts continue to fasten people to the seat after an accident.
  • the buckle of the present invention is a complete device as regards in the protection of the user, which device is also very important from the juridical and legal viewpoint.
  • Such operation is based on the alternate motion, of telescopic charac- ter or not, with a time delay that can be calibrated to the order of some seconds after the vehicle stops, by means of a fluid plenum device which is built-in or arranged in any way within the buckle.
  • the automatic recording of the impact speed in the accident is impressed sequentially and in an orderly way on a specific, extractable metallic card which is not interchangeable and can be read metrologically.
  • the whole mechanism is driven by the energy arising from the body inertial mass of the user, who is constrained by the seat belt, during the whole course of the accident.
  • Figure I example A, is a front view of an embodi ⁇ ment of the buckle according to the present invention
  • example C is a first longitudinal cross- sectional view of the buckle of example A as fastened, in the rest position
  • Figure III, example D is a second cross-sectional longitudinal view of the buckle of example A, as fastened and while it is undergoing the jerk effect at maximum stretching
  • example E is a third cross-sectional longitudinal view of the buckle of example A, as auto ⁇ matically unfastened and in the maximum return stroke position, with the unfastening action feeler as wedged in;
  • example B (D.I.) is a top and front view of the checking and recording device before employment;
  • Figure I, example B (D.S.) is a top and front view - L - of the checking and recording device after employment.
  • DETAILS OF FIGURE I EXAMPLE A n - portion of the seat belt strap; g - service hook; p - manual unfastening button; ib - handle of the interception and pushing member for pre-arrangement with continuous bilateral or unilateral choice; id - index of prearrangement to the right for automatic unfastening; ix - index of prearrangement to the left for automatic unfastening; ma - directions of manoeuvering for prearrangement for automatic unfastening; pf - position indicator of the checking device; vs - housing of the checking device; df - checking device; af - elastic supply member for closing and opening the checking device; mf - manoeuvering directions for closing and
  • EXAMPLE C 1 - portion of the seat belt strap; 2 - service hook 3 - self-locking effect hooking member with feeler of unfastening action; 4 - manual unfastening button; 5 - hook expelling member; 6 - elastic member; 7 - elastic member; 8 - hinge of the unfastening member; 9 - hinge of the articulation of the manual unfastening button; 10 - casing of the buckle end; 11 - interception and auto ⁇ matic unfastening push member; 12/13 - elastic members; 14 - pushing and percussion member with single or mul ⁇ tiple heads for recording speed measurements; 15 - upper rod fastening member; 16 - elastic member for energy storage and retrieval; 17 - supporting member bearing the checking device with key point array for progressive forward motion of recorded impressions; 18 - documental checking device; 19 - pin, elastic supply device; 20 - elastic supply device for closing and opening the check- ing device; 21 - elastic member ; 22 -
  • DETAILS OF FIGURE 4 EXAMPLE E Fe - direction of the pushing force for expulsion of the hook during the automatic unfastening stage; p - - 15 - buckle closure channel; Fs - direction of the pushing force for the feeler device during the automatic un ⁇ fastening stage of the buckle; cs - left chute plane of the pushing member for automatic unfastening; cd - right chute plane of the pushing member for automatic un ⁇ fastening; sd - right limit stop of the feeler, normal buckle unfastening stage; sx - left limit stop of the feeler, normal buckle unfastening stage; Fr - direction of the return force on contrivance recoil; h3 - oscil- lation space of the single or multiple impression heads of the percussion member of the checking device; pcd/pcx - right and left key points of spontaneous forward motion with profile interference, checking device; erf - rest fluid chamber.
  • DETAILS OF FIGURE I EXAMPLE B
  • DI - checking device with integral profile DI - checking device with integral profile
  • DS - checking device with the profile developed by the buckle in its emergency functions H1-H2-H3-H4- and so on... - example of data in relation to the body mass of the user, for metrological reading, on the checking device, of the values of the impact speed of the vehicle, sequentially and ordered.
  • Safety automatic unfastening the effect of the dy ⁇ namic pull or jerk, in case of impact of the transpor- tation means, such jerk resulting from the body mass of the person fastened by. the seat belt when it restrains the person during impact and being transmitted, to the buckle of the belt strap 1 connected to the hook 2, gives rise to the dynamic force in the direction Fd.
  • Such force is transmitted in a rigid way by said hook 2 to the hooking member 3, integral with the buckle body 32 through the pin 8, / and said body, which is integral with the supporting member 17 as it is locked with the same through a crown at the points "a", transmits such effect to the elastic member 16 compressing the same because said elastic member is interposed between the -r - percussion member 14 which is connected rigidly to the structure of the transportation means by the central rod, and the supporting member 17, till reaching the maximum extent of the alternate motion of the buckle it- self.
  • the single or multiple impression heads of the percussion member 14 go to rest, at the end-of-run impact, on the corresponding impression points of the checking device df (18) so marking such points through impression of reference marks and of sizes in relation to the value of the jerk and action dynamic force Fd, so that the impression or print can be read metrologically in a suitable way as an indication of the impact speed of the transportation means, together with the reference mark of the device relating to the contrivance in which it had been inserted.
  • the single or multiple impression heads of the percussion member 14 owing to the recoil effect of the contrivance, become disengaged from the device itself, which, with its thickness changed because it is compressed along the profile of the tracks within the space of the impression due to the push exerted by the supply device af (20), goes on giving a new rest place through interference of its integral profile at the key points pcd and pcx of the array, and so prearranging the next integral profile for the impression of any possible next jerk, and so on, step by step, so that the contrivance is allowed to record sequentially the - 17- impressions on the checking device of all impacts transmitted by the seat belt in its service during the course of the accident of the transportation means, in an orderly way, this being the automatic development of the device (see examples of Figures I-II-III-IV) .
  • the device df (18) By grasping and rotating the supply device af (20) through one of the two manoeuvering directions f by exerting the manual force Fmr, the device df (18) is disengaged from the pressure prong and, by grasping the outside end of the same the device can be extracted and recovered (see Figure I, example A, and Figure III, example D).
  • the fluid keeps stationary, within the rest fluid chamber 35; during the dynamic extending stage the distribution member 28 keeps in the axial position as it is linked rigidly through its lower rod to the bracket 34 of the structure of the transportation means; as an effect of the pull force in the direction Fd exerted by the belt strap 1 on the hook 2 and transmitted to the hooking member 3, and consequently to the external body 32 as the same is connected to it and integral with the member supporting the device-bearing • member 17, the buckle body goes forward so pushing the fluid itself with its own closure member 31, into the fluid-cushion chamber through calibrated force flow cpf, said fluid flowing through checking members 36 in a reverse direction with respect to the closure direction of the same (see examples of Figures II-III-IV).
  • the elastic member 16 in the compressed state and loaded with the energy stored in the preceding extending stage, transmits its push effect in the direction of the force Fr to the distribution member 28 as it is rigidly connected to the same through the rod * ⁇ n that stage, the distribution member 28 forces through the passages 37 for the fluid flow under calibrated push the fluid previously collected within said fluid-cushion chamber cpf designed for fluid flow under calibrated force, again towards the rest fluid chamber erf (35), the motion being slowed down as a function of the fluid flow calibration designed for the apparatus, so that the recoil return motion of the buckle itself is time-delayed (see examples of Figures II-III-IV).

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Automation & Control Theory (AREA)
  • Automotive Seat Belt Assembly (AREA)
  • Emergency Lowering Means (AREA)

Abstract

La boucle décrite, qui est conçue pour les ceintures de sécurité de véhicules, comprend un corps extérieur (32) et un logement (10) pourvu d'une ouverture pour le crochet d'utilisation (2), lequel est retenu en position par un élément d'accrochage (3) pouvant tourner autour d'une charnière (8). Lors de l'application d'une force sur la courroie (1) de la ceinture, le corps extérieur (32) pousse le fluide (35) à travers des trous (36) jusqu'à un élément de répartition (8), qui est fixé au véhicule (34) au moyen d'une tige centrale et d'un écrou (33). L'élément de support (17) comprime un ressort (16) contre un élément pousseur (14), lorsque le corps extérieur est tiré vers le haut et, lors de la cessation de l'application de la force sur la courroie (1), le ressort (16) pousse l'élément de support (17), amenant ainsi le fluide à passer à travers le trou (37), dès lors que l'élément de contrôle de fluide (26) recouvre les trous (36), ce qui occasionne un retard avant que les dimensions d'origine soient atteintes, ainsi que la libération du crochet (2) lorsque l'élément pousseur (11) l'intercepte à nouveau. Est également prévu un dispositif enregistreur (18) qui est enfoncé par un élément percuteur (14), produisant ainsi une déformation qui indique l'utilisation effective de la ceinture de sécurité ainsi que la vitesse du véhicule.
PCT/IT1990/000016 1989-02-28 1990-02-16 Boucle a liberation retardee automatique pour ceintures de securite de moyens de transport WO1990009909A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
IT12202A/89 1989-02-28
IT12201A/89 1989-02-28
IT8912201A IT8912201A0 (it) 1989-02-28 1989-02-28 Marzialmatic buckle-digitaltest fibbia per cinture di sicurezza su mezzi di locomozione, con aggancio ordinario di servizio ad effetto autoserrante, con sgancio automatico di sicurezza temporizzato e con sviluppo dispositivo documentale digitaltest, dell'avvenuto impiego della cintura, e per la verifica delle velocita' d'urto del mezzo,
IT8912202A IT8912202A0 (it) 1989-02-28 1989-02-28 Marzialmatic buckle fibbia per cinture di sicurezza su mezzi di locomozione, con aggancio ordinario di servizio ad effetto autoserrante e con sgancio automatico di sicurezza temporizzato, in caso di incidente, dopo tutta la dinamica ed a veicolo fermo

Publications (1)

Publication Number Publication Date
WO1990009909A1 true WO1990009909A1 (fr) 1990-09-07

Family

ID=26326484

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IT1990/000016 WO1990009909A1 (fr) 1989-02-28 1990-02-16 Boucle a liberation retardee automatique pour ceintures de securite de moyens de transport

Country Status (6)

Country Link
EP (1) EP0461126A1 (fr)
AU (1) AU5090690A (fr)
GR (1) GR900100141A (fr)
IL (1) IL93439A0 (fr)
PT (1) PT93294A (fr)
WO (1) WO1990009909A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001036237A3 (fr) * 1999-11-19 2002-03-07 Pavel Jeras Systeme d'ouverture automatique de ceinture de securite
WO2003031239A1 (fr) * 2001-10-12 2003-04-17 Malte Johansson Dispositif de degagement

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1561982A (fr) * 1967-12-15 1969-04-04
DE2603962A1 (de) * 1976-02-03 1977-08-04 Franz Zorc Verschluss zur automatischen oeffnung von sicherheitsgurten
FR2388569A1 (fr) * 1977-04-29 1978-11-24 Laurencel Pierre Xavier Attache de ceinture de securite a ouverture automatique retardee
FR2408359A1 (fr) * 1977-11-10 1979-06-08 Roussin Daniel Dispositif pour la liberation automatique a retardement, des ceintures de securite
FR2452940A1 (fr) * 1979-04-03 1980-10-31 Laporte Eugene Dispositif d'accrochage notamment de ceinture de securite
DE3020505A1 (de) * 1980-05-30 1981-12-10 Daimler-Benz Ag, 7000 Stuttgart Durch verzoegerungskraefte ausloesbarer sensor

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1561982A (fr) * 1967-12-15 1969-04-04
DE2603962A1 (de) * 1976-02-03 1977-08-04 Franz Zorc Verschluss zur automatischen oeffnung von sicherheitsgurten
FR2388569A1 (fr) * 1977-04-29 1978-11-24 Laurencel Pierre Xavier Attache de ceinture de securite a ouverture automatique retardee
FR2408359A1 (fr) * 1977-11-10 1979-06-08 Roussin Daniel Dispositif pour la liberation automatique a retardement, des ceintures de securite
FR2452940A1 (fr) * 1979-04-03 1980-10-31 Laporte Eugene Dispositif d'accrochage notamment de ceinture de securite
DE3020505A1 (de) * 1980-05-30 1981-12-10 Daimler-Benz Ag, 7000 Stuttgart Durch verzoegerungskraefte ausloesbarer sensor

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001036237A3 (fr) * 1999-11-19 2002-03-07 Pavel Jeras Systeme d'ouverture automatique de ceinture de securite
WO2003031239A1 (fr) * 2001-10-12 2003-04-17 Malte Johansson Dispositif de degagement

Also Published As

Publication number Publication date
EP0461126A1 (fr) 1991-12-18
IL93439A0 (en) 1990-11-29
PT93294A (pt) 1991-11-29
GR900100141A (el) 1991-06-28
AU5090690A (en) 1990-09-26

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