FR2600130A3 - Integrated roller-contact bearing for reduction gear members - Google Patents

Integrated roller-contact bearing for reduction gear members Download PDF

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Publication number
FR2600130A3
FR2600130A3 FR8708177A FR8708177A FR2600130A3 FR 2600130 A3 FR2600130 A3 FR 2600130A3 FR 8708177 A FR8708177 A FR 8708177A FR 8708177 A FR8708177 A FR 8708177A FR 2600130 A3 FR2600130 A3 FR 2600130A3
Authority
FR
France
Prior art keywords
balls
drum
reduction gear
bearing
internal
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
FR8708177A
Other languages
French (fr)
Other versions
FR2600130B3 (en
Inventor
Giovanni Zinzani
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BONFIGLIOLI TRASMITAL SpA
Original Assignee
BONFIGLIOLI TRASMITAL SpA
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
Application filed by BONFIGLIOLI TRASMITAL SpA filed Critical BONFIGLIOLI TRASMITAL SpA
Publication of FR2600130A3 publication Critical patent/FR2600130A3/en
Application granted granted Critical
Publication of FR2600130B3 publication Critical patent/FR2600130B3/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/30—Parts of ball or roller bearings
    • F16C33/37—Loose spacing bodies
    • F16C33/3706—Loose spacing bodies with concave surfaces conforming to the shape of the rolling elements, e.g. the spacing bodies are in sliding contact with the rolling elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B27/00—Hubs
    • B60B27/0005—Hubs with ball bearings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C19/00—Bearings with rolling contact, for exclusively rotary movement
    • F16C19/02—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows
    • F16C19/14—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load
    • F16C19/18—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with two or more rows of balls
    • F16C19/181—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with two or more rows of balls with angular contact
    • F16C19/183—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with two or more rows of balls with angular contact with two rows at opposite angles
    • F16C19/184—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with two or more rows of balls with angular contact with two rows at opposite angles in O-arrangement
    • F16C19/185—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with two or more rows of balls with angular contact with two rows at opposite angles in O-arrangement with two raceways provided integrally on a part other than a race ring, e.g. a shaft or housing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C19/00—Bearings with rolling contact, for exclusively rotary movement
    • F16C19/02—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows
    • F16C19/20—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows with loose spacing bodies, e.g. balls, between the bearing balls
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/72—Sealings
    • F16C33/76—Sealings of ball or roller bearings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C41/00—Other accessories, e.g. devices integrated in the bearing not relating to the bearing function as such
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2326/00—Articles relating to transporting
    • F16C2326/01—Parts of vehicles in general
    • F16C2326/02—Wheel hubs or castors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2326/00—Articles relating to transporting
    • F16C2326/20—Land vehicles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/72—Sealings
    • F16C33/723—Shaft end sealing means, e.g. cup-shaped caps or covers

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rolling Contact Bearings (AREA)
  • Gear Transmission (AREA)
  • Gears, Cams (AREA)
  • Friction Gearing (AREA)

Abstract

IL EST CARACTERISE EN CE QU'IL COMPREND AU MOINS UNE COURONNE DE BILLES 10 MAINTENUES ENTRE UNE PLURALITE D'ENTRETOISES 11 LESDITES BILLES ETANT DISPOSEES ENTRE UN ANNEAU INTERNE 12A, 12B MONTE SUR UN CORPS FIXE 5 DU REDUCTEUR 1 ET UN TAMBOUR 6 AUQUEL EST TRANSMIS LE MOUVEMENT PAR LEDIT REDUCTEUR 1, LA SURFACE INTERNE DUDIT TAMBOUR 6 PRESENTANT LE CHEMIN EXTERNE DE ROULEMENT DESDITES BILLES. APPLICATION NOTAMMENT AUX REDUCTEURS PREVUS POUR L'ACTIONNEMENT DE ROUES MOTRICES POUR CHENILLESIT IS CHARACTERIZED IN THAT IT INCLUDES AT LEAST A CROWN OF 10 BALLS HELD BETWEEN A PLURALITY OF SPACERS 11 THE SAID BALLS BEING ARRANGED BETWEEN AN INTERNAL RING 12A, 12B MOUNTED ON A FIXED BODY 5 OF REDUCER 1 AND A DRUM 6 TO WHICH IS TRANSMITTED THE MOVEMENT THROUGH REDUCER 1, THE INTERNAL SURFACE OF THE DRUM 6 PRESENTING THE EXTERNAL BEARING PATH FOR THE SAID BALLS. APPLICATION IN PARTICULAR TO REDUCERS DESIGNED FOR THE ACTUATION OF DRIVE WHEELS FOR TRACKS

Description

ROULEMENT INTEGRE POUR ORGANES REDUCTEURSINTEGRATED BEARING FOR REDUCING BODIES

La présente invention concerne un roulement intégré pour organes réducteurs prévus, en particulier, pour l'actionnement de roues motrices pour chenilles, roues avec pneumatique ou rouleau et similaires. Comme on le sait, les réducteurs destinés à la transmission du mouvement d'un organe moteur au tambour sur lequel est montée la roue à actionner, pré10 voient l'emploi d'un roulement interposé entre le moyeu fixe, solidaire de l'organe moteur, et ledit tambour, Ces réducteurs sont généralement d'un encombrement important, car il faut loger à l'intérieur du tambour mené le train d'engrenages de réduction, ainsi 15 que les organes de freinage adéquats, ce qui se trouve  The present invention relates to an integrated bearing for reducing members provided, in particular, for the actuation of drive wheels for tracks, wheels with tire or roller and the like. As is known, the reducers intended for the transmission of the movement of a driving member to the drum on which the wheel to be actuated is mounted, pre10 see the use of a bearing interposed between the fixed hub, integral with the driving member , and said drum, These reducers are generally of a considerable bulk, because it is necessary to house inside the driven drum the train of reduction gears, as well as the adequate braking members, which is

souvent en contradiction avec les exigences de construction.  often at odds with building requirements.

La présente invention a pour but de résoudre le problème exposé ci-dessus en réalisant un roule20 ment intégré dans l'organe réducteur de façon à permettre  The object of the present invention is to solve the problem set out above by producing a bearing integrated in the reducing member so as to allow

une diminution sensible de l'encombrement global.  a significant reduction in overall dimensions.

A cet effet, l'invention a pour objet un roulement d'une conception simple, d'un emploi sûr et fiable, ainsi que d'un coût relativement économique. 25 Ces buts et objets sont atteints, selon l'invention, par le présent roulement intégré pour organes réducteurs, lequel se caractérise par le fait qu'il comprend au moins une couronne de billes maintenues entre une pluralité d'entretoises, lesdites billes étant disposées entre un anneau interne monté sur un  To this end, the subject of the invention is a bearing of a simple design, of safe and reliable use, as well as of a relatively economical cost. 25 These objects and objects are achieved, according to the invention, by the present integrated bearing for reducing members, which is characterized by the fact that it comprises at least one ring of balls held between a plurality of spacers, said balls being arranged. between an internal ring mounted on a

corps fixe du réducteur et un tambour auquel est transmis le mouvement par ledit réducteur, la surface inter5 ne dudit tambour présentant un chemin externe de roulement pour lesdites billes.  fixed body of the reduction gear and a drum to which the movement is transmitted by said reduction gear, the inter5 ne surface of said drum having an external raceway for said balls.

Les caractéristiques précises de l'invention seront mieux mises en évidence par la description  The precise characteristics of the invention will be better highlighted by the description

détaillée, faite ci-après, d'une forme de réalisation 10 préférée du roulement intégr'é pour organe réducteur, réalisation représentée à titre indicatif sur le dessin joint. Sur ce dessin:  detailed, made below, of a preferred embodiment of the integrated bearing for reducing member, embodiment shown for information in the accompanying drawing. On this drawing:

- la figure 1 est une vue en coupe longi15 tudinale d'un réducteur muni du roulement selon l'invention.  - Figure 1 is a tudinal longi15 sectional view of a reduction gear provided with the bearing according to the invention.

- la figure 2 est une vue de détail d'une partie de la couronne de billes de ce roulement.  - Figure 2 is a detail view of part of the ring of balls of this bearing.

En se référant aux dites figures, la réfé20 rence 1 désigne globalement un organe réducteur dans lequel est intégré le roulement selon l'invention. Le réducteur 1 comprend un corps tubulaire 2 dans lequel est logé, bridé sur une extrémité de celui-ci à l'aide  Referring to said figures, reference 1 generally designates a reduction member in which the bearing according to the invention is integrated. The reducer 1 comprises a tubular body 2 in which is housed, clamped on one end thereof using

de vis 3, un organe moteur hydraulique 4.  of screw 3, a hydraulic motor member 4.

Le corps tubulaire 2 présente une partie cylindrique 5 sur laquelle est monté tournant un tambour 6 auquel peut être accouplée la roue à actionner; à cet effet, le tambour 6 présente une bride de fixation 6a. Le tambour 6 est muni, sur la surface interne, 30 d'une denture 7 faisant partie d'un train d'engrenages épicycloidal d'un type déjà bien connu et, par conséquent, non représenté en détail. De ce train d'engrenages - qui est actionné par l'arbre de l'organe moteur 4 passant à travers le corps tubulaire 2 - on peut voir 35 sur la figure 1 une roue satellite 8 qui engrène avec  The tubular body 2 has a cylindrical part 5 on which is rotatably mounted a drum 6 to which the wheel to be actuated can be coupled; for this purpose, the drum 6 has a fixing flange 6a. The drum 6 is provided, on the internal surface, with a toothing 7 forming part of a planetary gear train of a type already well known and, therefore, not shown in detail. From this gear train - which is actuated by the shaft of the motor member 4 passing through the tubular body 2 - we can see 35 in Figure 1 a satellite wheel 8 which meshes with

260Q130260Q130

la denture 7 et qui est montée tournante sur un support  the teeth 7 and which is rotatably mounted on a support

tubulaire 9 fixé frontalement sur le cylindre 5.  tubular 9 fixed frontally on the cylinder 5.

Entre le cylindre 5 et le tambour 6 est interposé un roulement formé d'une double couronne de billes 10. Les billes 10 sont séparées les unes des autres par des entretoises 11 avec profil adapté à celui des billes (figure 2), ces billes étant disposées entre deux anneaux internes 12a, 12b, montés sur le cylindre , et la surface interne du tambour. Les anneaux 12a, 10 12b et ladite surface interne du tambour forment des chemins de roulement pour les billes qui sont obliques symétriquement par rapport à l'axe de rotation du réducteur de façon à permettre de supporter les charges radiales et axiales transmises par la roue à la structure 15 fixe. Les deux couronnes de billes sont, en outre, séparées par une entretoise annulaire 13 montée sur le  Between the cylinder 5 and the drum 6 is interposed a bearing formed by a double ring of balls 10. The balls 10 are separated from each other by spacers 11 with a profile adapted to that of the balls (FIG. 2), these balls being disposed between two internal rings 12a, 12b, mounted on the cylinder, and the internal surface of the drum. The rings 12a, 10 12b and said internal surface of the drum form raceways for the balls which are symmetrically oblique with respect to the axis of rotation of the reduction gear so as to allow the radial and axial loads transmitted by the wheel to be supported. the fixed structure 15. The two crowns of balls are further separated by an annular spacer 13 mounted on the

tambour 6.drum 6.

Le tambour 6 est fermé frontalement par un couvercle 14, tandis que du côté opposé est prévue 20 une couronne 15 fixée au corps 2 et munie d'une lèvre annulaire 15a apte à former une sorte d'étanchéité à labyrinthe par rapport au bord du tambour. La fermeture hermétique du côté interne du tambour est assurée à l'aide de deux anneaux 16a, 16b portant périphériquement 25 les garnitures annulaires 17 correspondantes assurant respectivement l'étanchéité sur les surfaces internes de la couronne 15 et du tambour 6. Il est à remarquer qu'aussi bien la section des dits anneaux 16a, 16b, que les surfaces d'appui respectives présentent des conici30 tés opposées, de façon à donner lieu à une poussée  The drum 6 is closed frontally by a cover 14, while on the opposite side is provided a crown 15 fixed to the body 2 and provided with an annular lip 15a capable of forming a sort of labyrinth seal with respect to the edge of the drum . Hermetic closure of the internal side of the drum is ensured by means of two rings 16a, 16b carrying peripherally 25 the corresponding annular linings 17 ensuring respectively the sealing on the internal surfaces of the crown 15 and of the drum 6. It should be noted that both the section of said rings 16a, 16b, and the respective bearing surfaces have opposite conicities, so as to give rise to a thrust

axiale de serrage réciproque qui assure l'étanchéité.  axial reciprocal clamping which ensures sealing.

En définitive, le roulement décrit ci-dessus est non seulement d'une construction économique, mais encore il présente un bas rapport entre le diamètre externe et le diamètre interne, grâce, en particulier,  Ultimately, the bearing described above is not only of an economical construction, but also it has a low ratio between the external diameter and the internal diameter, thanks, in particular,

au fait que les couronnes de billes ont des chemins de roulement externes pratiqués directement dans le corps du tambour. Cela permet, par exemple, de loger à l'intérieur du réducteur, avec un encombrement réduit, le 5 moteur d'actionfiement et les organes de freinage adéquats.  the fact that the ball crowns have external raceways made directly in the body of the drum. This makes it possible, for example, to house inside the reduction gear, with a reduced bulk, the action motor and the appropriate braking members.

Dans l'application pratique de l'invention, les matériaux et autres organes utilisés, ainsi que la  In the practical application of the invention, the materials and other organs used, as well as the

forme et les dimensions peuvent varier selon les be10 soins.  shape and dimensions may vary depending on be10 care.

Claims (3)

REVENDICATIONS 1. Roulement intégré pour organes réducteurs, caractérisé par le fait qu'il comprend au moins une couronne de billes (10)maintenues entre une pluralité d'entretoises (11) lesdites billes étant disposées entre un anneau interne (12a, 12b) monté sur un corps fixe (5) du réducteur (1) et un tambour (6) auquel est transmis le mouvement par ledit réducteur (1), la surface interne dudit tambour (6) présentant le chemin externe de roulement desdites billes.  1. Integrated bearing for reducing members, characterized in that it comprises at least one ring of balls (10) held between a plurality of spacers (11) said balls being arranged between an internal ring (12a, 12b) mounted on a fixed body (5) of the reduction gear (1) and a drum (6) to which the movement is transmitted by said reduction gear (1), the internal surface of said drum (6) having the external raceway of said balls. 2. Roulement selon la revendication 1, caractérisé par le fait qu'il comprend une double couronne de billes (10) placées entre deux anneaux internes (12a, 12b) correspondants montés sur ledit corps fixe (5) du réducteur et les chemins de roulement externes correspondants ménagés sur la surface interne dudit tambour (6), lesdits chemins de roulement étant symétriquement obliques par rapport à l'axe de rotation dudit réducteur  2. Bearing according to claim 1, characterized in that it comprises a double ring of balls (10) placed between two internal rings (12a, 12b) corresponding mounted on said fixed body (5) of the reducer and the raceways corresponding external surfaces formed on the internal surface of said drum (6), said raceways being symmetrically oblique with respect to the axis of rotation of said reduction gear (1), de manière-à permettre de supporter les charges radiales et axiales transmises audit corps fixe.  (1), so as to allow to support the radial and axial loads transmitted to said fixed body. 3. Roulement selon la revendication 1, caractérisé par le fait ques lesdites entretoises (11) sont constituées par des éléments dont le profil est adapté à celui de la paire de billes correspondantes.  3. Bearing according to claim 1, characterized in that said spacers (11) consist of elements whose profile is adapted to that of the pair of corresponding balls.
FR8708177A 1986-06-13 1987-06-12 INTEGRATED BEARING FOR REDUCING BODIES Expired FR2600130B3 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT490686U IT210935Z2 (en) 1986-06-13 1986-06-13 INTEGRATED BEARING FOR REDUCING ORGANS

Publications (2)

Publication Number Publication Date
FR2600130A3 true FR2600130A3 (en) 1987-12-18
FR2600130B3 FR2600130B3 (en) 1988-07-01

Family

ID=11115849

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8708177A Expired FR2600130B3 (en) 1986-06-13 1987-06-12 INTEGRATED BEARING FOR REDUCING BODIES

Country Status (5)

Country Link
DE (1) DE8707935U1 (en)
ES (1) ES1002739Y (en)
FR (1) FR2600130B3 (en)
GB (1) GB2192952B (en)
IT (1) IT210935Z2 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2718500B1 (en) * 1994-04-12 1996-05-31 Roulements Soc Nouvelle Bearing fitted with a mechanical seal.
GB9700409D0 (en) * 1997-01-10 1997-02-26 Taylor Precision Plastics Limi Improvements in and relating to a bearing assembly
CN102182753A (en) * 2011-05-30 2011-09-14 襄樊振本传动设备有限公司 Precision rotating support
EP2657555A3 (en) * 2012-04-27 2015-03-04 Roller Bearing Company of America, Inc. High-capacity light-weight ball bearing for airborne vibration suppression

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB201597A (en) * 1922-04-03 1923-08-03 Herbert Charles Macleod Steven Improvements in antifriction bearings
GB740703A (en) * 1952-11-14 1955-11-16 Rolls Royce Improvements in or relating to bearings
GB829162A (en) * 1958-01-31 1960-02-24 Sperry Gyroscope Co Ltd Ball bearing
NL105086C (en) * 1958-02-13
GB963023A (en) * 1960-06-02 1964-07-08 Thew Shovel Co Turntable ball bearing for power cranes, shovels, hoes and the like
EP0164968A1 (en) * 1984-06-01 1985-12-18 Dresser Industries,Inc. High speed lubricated bearing unit

Also Published As

Publication number Publication date
IT210935Z2 (en) 1989-01-11
FR2600130B3 (en) 1988-07-01
IT8604906V0 (en) 1986-06-13
GB2192952B (en) 1990-10-24
DE8707935U1 (en) 1988-01-21
ES1002739Y (en) 1989-02-01
GB2192952A (en) 1988-01-27
GB8713773D0 (en) 1987-07-15
ES1002739U (en) 1988-06-16

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