WO1993023685A1 - Roue libre a douille avec roulement - Google Patents

Roue libre a douille avec roulement Download PDF

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Publication number
WO1993023685A1
WO1993023685A1 PCT/EP1993/001020 EP9301020W WO9323685A1 WO 1993023685 A1 WO1993023685 A1 WO 1993023685A1 EP 9301020 W EP9301020 W EP 9301020W WO 9323685 A1 WO9323685 A1 WO 9323685A1
Authority
WO
WIPO (PCT)
Prior art keywords
sleeve
bearing
freewheel
rollers
cage
Prior art date
Application number
PCT/EP1993/001020
Other languages
German (de)
English (en)
Inventor
Norbert Geheeb
Peter Kenter
Alfred TÖNSMANN
Joachim Ritter
Ernst Neuwirth
Harald Hochmuth
Original Assignee
Ina Wälzlager Schaeffler Kg
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 Ina Wälzlager Schaeffler Kg filed Critical Ina Wälzlager Schaeffler Kg
Publication of WO1993023685A1 publication Critical patent/WO1993023685A1/fr

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
    • F16C33/66—Special parts or details in view of lubrication
    • F16C33/6603—Special parts or details in view of lubrication with grease as lubricant
    • F16C33/6607—Retaining the grease in or near the bearing
    • F16C33/6614—Retaining the grease in or near the bearing in recesses or cavities provided in retainers, races or rolling elements
    • 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
    • F16C19/22—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings
    • F16C19/24—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for radial load mainly
    • F16C19/28—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for radial load mainly with two or more rows of rollers
    • 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
    • F16C33/46—Cages for rollers or needles
    • F16C33/4617—Massive or moulded cages having cage pockets surrounding the rollers, e.g. machined window cages
    • F16C33/4623—Massive or moulded cages having cage pockets surrounding the rollers, e.g. machined window cages formed as one-piece cages, i.e. monoblock cages
    • F16C33/4635—Massive or moulded cages having cage pockets surrounding the rollers, e.g. machined window cages formed as one-piece cages, i.e. monoblock cages made from plastic, e.g. injection moulded window cages
    • 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
    • F16C33/46—Cages for rollers or needles
    • F16C33/48—Cages for rollers or needles for multiple rows of rollers or needles
    • F16C33/485—Cages for rollers or needles for multiple rows of rollers or needles with two or more juxtaposed cages joined together or interacting with each other
    • 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
    • F16C41/001—Integrated brakes or clutches for stopping or coupling the relatively movable parts
    • 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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D41/00—Freewheels or freewheel clutches
    • F16D41/06—Freewheels or freewheel clutches with intermediate wedging coupling members between an inner and an outer surface
    • F16D41/064—Freewheels or freewheel clutches with intermediate wedging coupling members between an inner and an outer surface the intermediate members wedging by rolling and having a circular cross-section, e.g. balls
    • F16D41/066—Freewheels or freewheel clutches with intermediate wedging coupling members between an inner and an outer surface the intermediate members wedging by rolling and having a circular cross-section, e.g. balls all members having the same size and only one of the two surfaces being cylindrical
    • F16D41/067—Freewheels or freewheel clutches with intermediate wedging coupling members between an inner and an outer surface the intermediate members wedging by rolling and having a circular cross-section, e.g. balls all members having the same size and only one of the two surfaces being cylindrical and the members being distributed by a separate cage encircling the axis of rotation
    • 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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2300/00—Special features for couplings or clutches
    • F16D2300/06—Lubrication details not provided for in group F16D13/74

Definitions

  • the invention relates to a sleeve freewheel with bearing, consisting of a cylindrical sleeve which merges into a sleeve rim at both ends, with a clamping surface attached to an inside or outside of the sleeve, a centrally guided freewheel cage with resilient means for receiving clamping rollers and bearing cages with bearing rollers arranged on both sides thereof.
  • Such a sleeve freewheel consists, for example, of a thin-walled, non-cutting outer ring with clamping surfaces arranged on its inside and a plastic cage equipped with metal springs for receiving the clamping elements.
  • the freewheel cage ensures the exact positioning and guidance of the needle rollers that act as locking elements.
  • Two integrated support bearings are arranged on both sides of the freewheel unit, which absorb radial forces. Needle rings with plastic cages also serve as support bearings (INA Company Catalog No. 306, page 239).
  • the disadvantage of this sleeve freewheel is that to achieve optimum space utilization due to the smallest radial and axial height, on the one hand the space between the sleeve and the freewheel unit or between the sleeve and support bearings and on the other hand the space between the freewheel cage and the bearing cage or between the bearing cage and the sleeve rim is very small.
  • the lack of space between Adequate lubrication of the support rings or pinch rollers is impeded between the free-wheel cage and the bearing cage or between the bearing cage and the sleeve flange. No or only an insufficient amount of lubricant gets into the raceway area of the rollers and the sleeve.
  • a large number of cages are known which deal with the provision of lubricant space to improve the lubrication of rolling bearings.
  • DE-OS 3811 958 describes a cage for a rolling bearing in such a way that the end openings of the grooves, which are closed on the other hand, are alternately fitted on one and the other end side of the cage.
  • an improved lubrication of this roller bearing is achieved, however, such technical solutions are not suitable for mounted sleeve freewheels with several cages arranged one behind the other.
  • the object of the invention is therefore to provide an improved greasing of the inner surface of the sleeve of a mounted sleeve freewheel.
  • the object is achieved in that openings are provided in each case for spaces for receiving lubricant between the free-running cage and the bearing cage and / or between the inside of the sleeve flange and the end face of the bearing cage.
  • the spaces in the axial direction between the clamping and bearing rollers and between the inside of the sleeve rim and the bearing rollers and in the radial direction between the sleeve and the freewheel cage or the sleeve and the bearing cages provide sufficient lubricant via the breakthroughs according to the invention are, so that a reliable lubrication of the mounted sleeve freewheel is possible.
  • This arrangement of the breakthroughs to the Lubricant spaces also allow the amount of lubricant to be equalized on the entire inside of the sleeve, so that each rolling element receives the necessary amount of lubricant regardless of its position.
  • the openings are formed in that continuous step-like recesses are arranged in the radial and axial direction on both ends of the bearing cages in the web area.
  • the openings between the inside of the sleeve rim and the end face of the bearing cages and between the freewheel cage and the bearing cage are formed in that the end faces of the bearing cages have elevations distributed over their entire circumference. This ensures a particularly large volume of the amount of lubricant to be absorbed.
  • Such a cage with elevations can also be produced inexpensively by injection molding.
  • the inside of the sleeve rims are provided with radial beads on their inside at uniform intervals over their entire circumference.
  • the resulting pockets are limited on the one hand by the smooth end walls of the bearing cages and on the other hand by the sleeve rim and are connected to the space for the lubricant intake.
  • the rotational movement of the sleeve freewheel results in a uniform distribution of the lubricant over the entire inside of the sleeve.
  • lubrication pockets are arranged in the web area of the freewheel cage and / or bearing cages between the nip rollers and / or bearing rollers.
  • lubrication pockets also ensure that reliable lubrication of the sleeve freewheel is possible.
  • the improvement in the lubricant situation that can be achieved in this way leads to an improvement in the function of the sleeve freewheel and to an extension of its service life.
  • the running noise of the sleeve freewheel is also reduced by the improved lubricant supply.
  • these lubrication pockets are arranged in the web area parallel to the rolling element pockets of pinch rollers and / or bearing rollers.
  • the roller body pockets of pinch rollers and / or bearing rollers have cutouts.
  • Such recesses are arranged according to claim 8 on the long sides of the rolling element pockets and according to claim 9 on the front sides of the rolling element pockets of clamping rollers and / or bearing rollers.
  • the cutouts should be arranged on one side on the roller body pockets of pinch rollers and / or bearing rollers. This option is mainly used when only a small installation space is available.
  • 3 shows a detail from a top view of the inside of a sleeve freewheel with bearing
  • 4 is a side view of a bearing cage
  • Fig. 6 is a plan view of a sleeve board
  • FIG. 11 shows a detail from a plan view of a bearing or free-wheeling cage with one-sided recesses on the roller body pockets.
  • the sleeve freewheel consists of a thin-walled, non-cutting cylindrical sleeve 1, which merges into a sleeve rim 2 at both ends.
  • clamping surfaces (not shown) for the clamping rollers 5 are attached.
  • three sleeve-shaped cages 6, 3, 6 with bearing rollers 7 or clamp rollers 5 are guided on the inside of the sleeve 1.
  • the freewheel cage 3 with recesses and metal springs 4 for receiving clamping rollers 5 is arranged above the clamping surfaces, not shown.
  • the bearing cages 6 with recesses for receiving the bearing rollers 7 are located on both sides between the freewheel cage 3 and the sleeve flange 2.
  • openings 8 are made in the between the freewheel cage 3 and the bearing cage 6 and / or between the inside of the sleeve flange 2 and the end face of the bearing cage 6 Top view of invisible rooms 11 on Take lubricant provided.
  • these openings 8 are formed between the freewheel cage 3 and the bearing cage 6 and between the inside of the sleeve flange 2 and the front side of the bearing cages 6 by continuous step-like recesses in the web area on both ends of the bearing cages 6 in the radial and axial direction .
  • Figure 2 shows in cross section the structure of a sleeve freewheel with storage.
  • the two bearing cages 6 with bearing rollers 7 are arranged between the two sleeve rims 2 and the centrally guided freewheel cage 3 with clamping rollers 5.
  • the arrangement of the cages 3, 6 to each other takes place so that their end faces are close to each other.
  • the openings 8 in the form of continuous step-like recesses in the radial and axial direction on both end faces of the bearing cages 6 in their web area allow sufficient greasing after assembly of the sleeve freewheel with the aid of an inserted dome.
  • the lubricant passes through the recesses between the inside of the sleeve flange 2 and the bearing cage 6 and between the freewheel cage 3 and the bearing cage 6 into the space 11, which serves as a lubricant reservoir. Due to the rotation of the sleeve freewheel, a distribution of the lubricant between the pinch rollers 5 and bearing rollers 7 and the inner wall of the sleeve 1 takes place under the influence of the centrifugal force.
  • FIG. 3 shows a further embodiment of the invention, which can be used advantageously for manufacturing reasons, particularly in the area of the smallest sleeve freewheels.
  • 6 ⁇ oppen-shaped elevations 9 are sprayed on both end faces of the bearing cages, so that the opening 8 to the spaces for receiving lubricant 11 is formed as an annular gap between the sleeve rim 2 and the bearing cage 6 and between the freewheel cage 3 and the bearing cage 6.
  • the end faces of the free-running cage 3 are of smooth-walled design.
  • FIG. 5 shows a cross section through a bearing cage along the line VV in FIG. 4.
  • the opening 8, which is designed as an annular gap, is in this case formed by the bearing cage 6 and the sleeve rim 2 (not shown) or by the bearing cage 6 and the freewheel cage 3, also not shown educated.
  • FIGS. 6 and 7 show a modified embodiment of the invention according to claim 4.
  • the sleeve rim 2 is provided on its inside at regular intervals distributed over its entire circumference with radial beads 10.
  • the radial beads 10, the sleeve 1 and the end face of the bearing cage 6, not shown open pockets 12 are formed in the direction of the center of the sleeve freewheel, which also have the space (not shown) for receiving lubricant 11 stay in contact.
  • These pockets 12 are attached to at least one sleeve board 2.
  • This embodiment variant has the advantage that, in addition to the freewheel cage 3, the bearing cages 6 can also have smooth-walled end faces.
  • the lubricant is also distributed here by the rotational movement of the sleeve freewheel from the pockets 12 or from the space 11 over the entire inside of the sleeve 1, so that the pinch rollers 5 and bearing rollers 7 are always provided with a lubricant film.
  • the freewheel cage 3 or bearing cage 6 has clamping rollers 5 or bearing rollers 7 receiving pockets, between which continuous lubrication pockets 13 are arranged in the radial direction.
  • these lubrication pockets 13 have a rectangular shape and are arranged parallel to the roller body pockets of the freewheel cage 3 or bearing cage 6 in the middle of the web area.
  • these lubrication pockets 13 are formed by recesses 14 on the rolling element pockets of clamping rollers 5 or bearing rollers 7.
  • FIG. 9 shows the arrangement of the cutouts 14 on the long sides of the roller body pockets, ie the cutouts 14 are made centrally in the holder of nip rollers 5 or bearing rollers 7.
  • FIG. 11 shows a one-sided arrangement of the recesses 14 on the roller body pockets of clamping rollers 5 or bearing rollers 7, which is advantageously used in a small installation space.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rolling Contact Bearings (AREA)

Abstract

La présente invention concerne une roue libre à douille avec roulement, constituée d'une douille cylindrique (1) se terminant à chaque extrémité par un rebord de douille (2), avec une surface de blocage appliquée sur les faces interne ou externe de la douille (1), une cage de roue libre (3) centrée et comportant des moyens élastiques (4) pour la réception de rouleaux de coincement (6) et, de deux côtés, des cages de roulement (6) avec rouleaux de roulement (7). Selon cette invention, des ouvertures (8) sont prévues entre la cage de roue libre (3) et la cage de roulement (6) et/ou entre la face interne du rebord de douille (2) et la face avant de la cage de roulement (6), les dites ouvertures communiquent avec des espaces pour lubrifiants (11). Le but de l'invention est aussi atteint selon un autre mode de réalisation dans lequel la zone marginale de la cage de roue libre (3) et/ou des cages de roulement (6) comporte des creux de graissage (13) disposés entre les rouleaux de coincement (5) et/ou les rouleaux de roulement (7). Grâce à cette conception de la roue libre à douille, on obtient une lubrification suffisante des surfaces de glissement et, en même temps, une amélioration du mode de fonctionnement et une augmentation de la durée de vie de la roue libre à douille.
PCT/EP1993/001020 1992-05-15 1993-04-28 Roue libre a douille avec roulement WO1993023685A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4216055A DE4216055C2 (de) 1992-05-15 1992-05-15 Hülsenfreilauf mit Lagerung
DEP4216055.3 1992-05-15

Publications (1)

Publication Number Publication Date
WO1993023685A1 true WO1993023685A1 (fr) 1993-11-25

Family

ID=6458944

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1993/001020 WO1993023685A1 (fr) 1992-05-15 1993-04-28 Roue libre a douille avec roulement

Country Status (2)

Country Link
DE (1) DE4216055C2 (fr)
WO (1) WO1993023685A1 (fr)

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FR2726059A1 (fr) * 1994-10-22 1996-04-26 Schaeffler Waelzlager Kg Amortisseur de vibrations torsionnelles dans un troncon d'entrainement
DE19535889A1 (de) * 1995-09-27 1997-04-03 Schaeffler Waelzlager Kg Freilaufkupplung für einen Lichtmaschinenantrieb
JP2013104492A (ja) * 2011-11-14 2013-05-30 Schaeffler Technologies Gmbh & Co Kg 潤滑剤分配のための突起を備えた、フリーホイールベルトプーリに用いられる保持器
WO2018133891A1 (fr) * 2017-01-20 2018-07-26 Schaeffler Technologies AG & Co. KG Palier de butée pour le montage d'un porte-fusée ainsi qu'ensemble support de porte-fusée pourvu du palier de butée

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DE4328399A1 (de) * 1993-08-24 1995-03-02 Schaeffler Waelzlager Kg Schalteinrichtung für ein Zahnräderwechselgetriebe eines Kraftfahrzeuges
DE9312991U1 (de) * 1993-09-02 1993-10-21 INA Wälzlager Schaeffler KG, 91074 Herzogenaurach Freilauf
DE9400643U1 (de) * 1994-01-15 1994-03-03 INA Wälzlager Schaeffler KG, 91074 Herzogenaurach Hülsenlager
DE4442404C2 (de) * 1994-11-30 1999-07-01 Schaeffler Waelzlager Ohg Verdrehsicherung für einen Kunststoffkäfig eines Freilaufs
DE19505740A1 (de) * 1995-02-20 1996-08-22 Schaeffler Waelzlager Kg Kurvenrolle
DE19514506A1 (de) * 1995-04-19 1996-10-24 Schaeffler Waelzlager Kg Klemmrollenfreilauf
US5630670A (en) * 1995-06-03 1997-05-20 INA W alzlager Schaeffler KG Axial rolling bearing
DE19733026C2 (de) * 1997-07-31 2001-04-12 Schaeffler Waelzlager Ohg Verfahren zum Federsetzen eines bogenförmigen Federelementes eines Klemmrollenfreilaufs
DE19951389A1 (de) * 1999-10-26 2001-05-03 Schaeffler Waelzlager Ohg Käfig für einen Klemmrollenfreilauf
DE10002026B4 (de) * 2000-01-19 2007-06-06 Daimlerchrysler Ag Schrägverzahntes Zahnrad mit einem Loslager
DE102006049771B4 (de) * 2006-10-21 2016-12-29 Schaeffler Technologies AG & Co. KG Schaltbare Freilaufkupplung
DE102007003405A1 (de) * 2007-01-23 2008-07-24 Schaeffler Kg Freilaufriemenscheibe
DE102007006707A1 (de) 2007-02-10 2008-08-14 Schaeffler Kg Lager-Freilauf-Einheit
DE102007018807A1 (de) * 2007-04-20 2008-10-23 Timken Gmbh Käfig für ein Wälzlager
BRPI0822197A2 (pt) 2008-01-22 2015-06-23 Cti Systems S A Aparelho de segurnaça antiqueda com mecanismo de acionamento de cabo
DE102008021960A1 (de) 2008-05-02 2009-11-05 Schaeffler Kg Freilauf mit verringerter Masse
DE102010011576A1 (de) 2010-03-16 2011-09-22 Schaeffler Technologies Gmbh & Co. Kg Freilaufkupplung mit einem zwischen einem festen Gehäuseteil und einer Welle angeordneten Hülsenfreilauf
DE102013213436A1 (de) 2013-07-09 2015-01-15 Schaeffler Technologies Gmbh & Co. Kg Hülsenfreilauf
US20170102032A1 (en) * 2015-10-12 2017-04-13 Schaeffler Technologies AG & Co. KG Low friction ball bearing cage design with optimized contact surface

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DE1174583B (de) * 1962-05-18 1964-07-23 Fichtel & Sachs Aktiengesellschaft, Schweinfurt Doppeltwirkende Klemmstueckfreilaufkupplung
US3307889A (en) * 1964-07-14 1967-03-07 Torrington Co Bearing retainer
FR2066457A5 (fr) * 1969-10-25 1971-08-06 Schaeffler Ohg Industriewerk
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FR2198570A5 (fr) * 1972-07-05 1974-03-29 Haug Ag Fritz
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GB2210941A (en) * 1987-10-09 1989-06-21 Ntn Toyo Bearing Co Ltd Clutch
DE3811958A1 (de) * 1988-04-11 1989-10-19 Kugelfischer G Schaefer & Co Kaefig fuer waelzlager
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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2726059A1 (fr) * 1994-10-22 1996-04-26 Schaeffler Waelzlager Kg Amortisseur de vibrations torsionnelles dans un troncon d'entrainement
DE19535889A1 (de) * 1995-09-27 1997-04-03 Schaeffler Waelzlager Kg Freilaufkupplung für einen Lichtmaschinenantrieb
JP2013104492A (ja) * 2011-11-14 2013-05-30 Schaeffler Technologies Gmbh & Co Kg 潤滑剤分配のための突起を備えた、フリーホイールベルトプーリに用いられる保持器
WO2018133891A1 (fr) * 2017-01-20 2018-07-26 Schaeffler Technologies AG & Co. KG Palier de butée pour le montage d'un porte-fusée ainsi qu'ensemble support de porte-fusée pourvu du palier de butée

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DE4216055A1 (de) 1993-11-18
DE4216055C2 (de) 1997-12-18

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