BE1020521A5 - SELF-CENTERING CARRIER BAND SUPPORT DEVICE - Google Patents
SELF-CENTERING CARRIER BAND SUPPORT DEVICE Download PDFInfo
- Publication number
- BE1020521A5 BE1020521A5 BE2012/0163A BE201200163A BE1020521A5 BE 1020521 A5 BE1020521 A5 BE 1020521A5 BE 2012/0163 A BE2012/0163 A BE 2012/0163A BE 201200163 A BE201200163 A BE 201200163A BE 1020521 A5 BE1020521 A5 BE 1020521A5
- Authority
- BE
- Belgium
- Prior art keywords
- rollers
- support
- self
- centering
- vertical axis
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G39/00—Rollers, e.g. drive rollers, or arrangements thereof incorporated in roller-ways or other types of mechanical conveyors
- B65G39/10—Arrangements of rollers
- B65G39/12—Arrangements of rollers mounted on framework
- B65G39/16—Arrangements of rollers mounted on framework for aligning belts or chains
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G15/00—Conveyors having endless load-conveying surfaces, i.e. belts and like continuous members, to which tractive effort is transmitted by means other than endless driving elements of similar configuration
- B65G15/08—Conveyors having endless load-conveying surfaces, i.e. belts and like continuous members, to which tractive effort is transmitted by means other than endless driving elements of similar configuration the load-carrying surface being formed by a concave or tubular belt, e.g. a belt forming a trough
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rollers For Roller Conveyors For Transfer (AREA)
Description
DISPOSITIF DE SUPPORT DE BANDE TRANSPORTEUSE AUTO-CENTREUR Objet de l'inventionSELF-CENTERING CARRIER BAND SUPPORT DEVICE Object of the invention
[0001] La présente invention se rapporte à un dispositif· auto-centreur à rouleaux pour convoyeur à bande ' sans fin destiné' à centrer, la bande du convoyeur sur l'ensemble des rouleaux la supportant et, ' par là même, centrer le bande transporteuse à l'intérieur de l'ossature du convoyeur.The present invention relates to a device · self-centering roller conveyor belt endless 'intended to center, the conveyor belt on all of the rollers supporting it and' thereby centering the conveyor belt inside the frame of the conveyor.
Etat de la techniqueState of the art
[0002] Il est connu de l'homme du métier d'utiliser comme support de . bande........transporteuse ..des,. dispositifs . à rouleaux dits « auto-centreurs ». Dans de tels dispositifs, les rouleaux supports sont généralement montés sur une structure pivotante permettant d'orienter la direction de roulement des rouleaux.It is known to those skilled in the art to use as support. band ........ conveyor ..des ,. devices. self-centering rollers. In such devices, the support rollers are generally mounted on a pivoting structure for orienting the rolling direction of the rollers.
[0003] Afin d'obtenir une orientation automatique de ces dispositif s,' on : utilise notamment des rouleaux tronc-coniques de part, et d'autre de la bande, les pointes des cônes étant disposées vers l'extérieur de la bande. Dans ce cas, en effet, lors de l'utilisation, le diamètre moyen d'entraînement, du rouleau diminue lorsque s'on s' éloigne de l'axe de l'ossature du convoyeur. Ceci a pour effet lorsque la bande s'éloigne du centre du convoyeur, par exemple à droite, que la vitesse du rouleau droit augmente, tandis que celle du rouleau de gauche diminue, induisant des frictions plus fortes à droite, ce qui provoque la rotation du support vers la gauche, corrigeant ainsi la position de la bande. Ce type de dispositif est par exemple décrit dans les documents FR 2 692 236 et US 2 815 851.In order to obtain an automatic orientation of these devices s' is used: in particular truncated conical rollers on either side of the band, the tips of the cones being disposed towards the outside of the band. In this case, in fact, during use, the average driving diameter of the roll decreases when one moves away from the axis of the frame of the conveyor. This has the effect that as the belt moves away from the center of the conveyor, for example to the right, the speed of the right roller increases, while that of the left roller decreases, inducing stronger friction to the right, which causes rotation. of the support to the left, correcting the position of the band. This type of device is for example described in documents FR 2 692 236 and US 2 815 851.
[0004] Dans ce type de dispositifs, la rotation selon l'axe de la structure pivotante est libre et souvent assurés par des. roulements au niveau dé l'axe de rotation minimisant les frottements. Cette liberté de mouvement, associée à des contraintes importantes dans le cas de charges lourdes et de grandes largeurs de bandes induit souvent des vibrations gênantes.In this type of device, the rotation along the axis of the pivoting structure is free and often provided by. bearings at the axis of rotation minimizing friction. This freedom of movement, associated with heavy constraints in the case of heavy loads and large band widths often induces annoying vibrations.
Buts de l·1 invent.;ionGoals of the 1 invent. Ion
[0005] La -présente-'· invention vise à fournir un dispositif auto-centreur à rouleaux pour convoyeur à. bande sans fin, particulièrement, adapté à de larges bandes et. de lourdes charges, et présentant une stabilité mécanique', améliorée.The present invention aims to provide a self-centering device for conveyor rollers. endless band, especially, suitable for wide bands and. heavy loads, and having improved mechanical stability.
[0006] Certains aspects de l'invention visent aussi à fournir une alternative aux dispositifs auto-cèntreurs dp l'art antérieur. .. .. ’ . ·>·.Some aspects of the invention also aim at providing an alternative to the self-generating devices of the prior art. .. .. '. ·> ·.
Résumé de l'inventionSummary of the invention
[0007] La présente invention concerne un élément d'ossature pour convoyeur à bande sans fin comprenant un support mobile Çauto-centreur à .rouleaux supportant en utilisation... la bande........sans..., .fin,.......le........support ..mobile .étant disposé de façon à pouvoir tourner selon un axe vertical, ledit support . mobile étant caractérisé en ce que des. surfaces se déplaçant sur des galets ou des roulettes permettent, ;en. utilisation, de soutenir et de guider le support mobile sur une partie fixe de l'ossature.The present invention relates to a frame member for an endless belt conveyor comprising a self-centering self-centering support rollers in use ... the band ........ without ...,. end, ....... the ........ support ..mobile. being arranged so as to rotate along a vertical axis, said support. mobile device being characterized in that moving surfaces on rollers or rollers allow, in. use, support and guide the mobile support on a fixed part of the frame.
[0008] Avantageusement, lesdit.es surfaces sont solidaires du support, mobile et glissent ou roulent sur les galets du· les. roulettes fixées à une partie fixe de 1'ossature.Advantageously, the said surfaces are integral with the support, mobile and slide or roll on the rollers ·. casters fixed to a fixed part of the frame.
[0009] De façon alternative, lesdites surfaces sont' solidaires d'une partie fixe de l'ossature et les galets, · ou les roulettes, fixées au support mobile glissent ou roulent sur lesdites surfaces.Alternatively, said surfaces are 'integral with a fixed part of the frame and the rollers, · or the wheels, fixed to the movable support slide or roll on said surfaces.
[0010] ..... De préférence, les.....surfaces, sont courbées de -- façon à modifier la sensibilité du dispositif auto-centreur. .............. .................... . .. .[0010] ..... Preferably, the surfaces are curved so as to modify the sensitivity of the self-centering device. .............. ..................... ..
[0011] Avantageusement, le support mobile comprend au moins deux rouleaux coniques, 1'extrémité de ces rouleaux orientée vers l'extérieur du support présentant un diamètre inférieur au diamètre de ces rouleaux vers l'axe vertical.Advantageously, the movable support comprises at least two conical rollers, the end of these rollers oriented towards the outside of the support having a diameter smaller than the diameter of these rollers towards the vertical axis.
[0012] De préférence, lesdites roulettes ou lesdits , . galets sont disposés à une distance de l'axe vertical représentant au moins 30% (de préférence 50%, avantageusement 75%) de la distance séparant l'axe vertical des extrémités du support mobile, afin d'améliorer la stabilité mécanique de l'ensemble.[0012] Preferably, said wheels or said,. rollers are arranged at a distance from the vertical axis representing at least 30% (preferably 50%, advantageously 75%) of the distance separating the vertical axis from the ends of the mobile support, in order to improve the mechanical stability of the together.
[0013] Avantageusement, les surfaces sont inclinées de façon à induire le centrage de la bande. Cette caractéristique pourra être utilisée seule pour obtenir 1'auto-centrage, ou conjointement à l'utilisation de rouleaux coniques.Advantageously, the surfaces are inclined so as to induce the centering of the strip. This feature may be used alone to achieve self centering, or in conjunction with the use of tapered rollers.
[0014] De préférence, des moyens d'arrêts sont fixés aux surfacesde façon à"" limiter,en Utilisation, les mouvements de rotation du support.[0014] Preferably, stop means are fixed to the surfaces so as to limit the use of the rotation movements of the support.
Brève description des figuresBrief description of the figures
[0015] ta figure 1 représente une vue en perspective d'un exemple d'élément d'ossature selon l'invention.Figure 1 shows a perspective view of an exemplary framing member according to the invention.
[0016] La - figgre 2 - représente une vué latérale de 1' élément de la figure.....il"............................The - figgre 2 - represents a side view of 1 'element of the figure ..... he "........................ ....
[0017] La figure 3 représente un autre exemple d'élément d'ossature selon l'invention.Figure 3 shows another example of frame element according to the invention.
[0018] lies figure 4 à 8 représentent des vues latérales schématiques d'exemples d'éléments d'ossature selon ] ' invention...... .................................J......... .......Figures 4 to 8 show schematic side views of examples of frame elements according to the invention ...... .................. ............... J ......... .......
Description détaillée de l'inventionDetailed description of the invention
[0019] L'invention concerne un élément d'ossature 1 pour convoyeur a bande sans fin. 9 comprenant un support mobile 4 de bande auto-centreur, ledit support mobile soutenant des axes de rouleaux 2-3 sur lesquels roule la bande sans fin 9. Afin.....dé recentrer la bande 9, lorsque celle-ci s'éloigne de sa position centrale, le support mobile 4 peut tourner autour d'un axe vertical 5, guidant ainsi la bande 9 vers la position désirée.The invention relates to a frame member 1 for conveyor belt endless. 9 comprising a mobile support 4 of self-centering strip, said movable support supporting axes 2-3 rollers on which rolls the endless belt 9. To ..... refocus the band 9, when it s' away from its central position, the mobile support 4 can rotate about a vertical axis 5, thus guiding the band 9 to the desired position.
[0020] Tel que représenté aux figures 1 à 3, le support mobile 4 de 1'invention comprend des surfaces 7 se déplaçant sur des roulettes 6 ou des galets fixés a la partie fixe 8 de l'ossature. Au vu de ces figures, l'homme du métier comprend aisément que de façon équivalente, l'on peut aussi placer les. roulettes 6 ou les galets sur support; mobile 4 et. les · chemins de roulement 7 sur la partie fixe, de 1' ossature 8 tel que'représenté aux figures" 4'à 8.As shown in Figures 1 to 3, the movable support 4 of the invention comprises surfaces 7 moving on rollers 6 or rollers fixed to the fixed part 8 of the frame. In view of these figures, one skilled in the art easily understands that in an equivalent manner, one can also place them. casters 6 or rollers on support; mobile 4 and. the raceways 7 on the fixed part of the frame 8 as shown in FIGS. 4 to 8.
[0021] L'utilisation d'un chemin de roulement/glissement - placé à une distance suffisante......de l'axe vertical permet de supporter l'effort de torsion appliqué par la charge présente sur la bande. En effet, lorsque la charge est décentrée, l'effort de torsion subit par l'axe vertical peut entraîner par exemple, un blocage temporaire ou partiel· du mouvement de rotation du dispositif. Ce phénomène peut, par exemple, induire un fonctionnement du dispositif par sauts succèssifs et entraîner de ce.fait-des vibrations néfastes et déformation de la géométrie générale... (-bruit et fatigue des matériaux et comportements anormaux).The use of a raceway / sliding - placed at a sufficient distance ...... from the vertical axis can withstand the torsional force applied by the load on the tape. Indeed, when the load is off-center, the torsional force undergone by the vertical axis can result for example, a temporary or partial block · of the rotational movement of the device. This phenomenon can, for example, induce operation of the device by successful jumps and result in harmful damage and deformation of the general geometry (noise and fatigue of materials and abnormal behavior).
[0022] De préférence, le point d'appui du support mobile 4 sera disposé à une distance de l'axe vertical 5 d'au moins 50% dé la distance comprise entre l'axe 5 et 1'extrémité du support mobile 4. Avantageusement, ce point d'appui sera situé sous lés extrémités du support mobile 4.Preferably, the support point of the mobile support 4 will be disposed at a distance from the vertical axis 5 of at least 50% of the distance between the axis 5 and the end of the mobile support 4. Advantageously, this fulcrum will be located under the ends of the mobile support 4.
[0023] Parmi lés avantages de l'invention, on pourra tirer parti de la géométrie des surfaces de support pour améliorer la régulation du dispositif d'auto-centrage.Among the advantages of the invention, it will be possible to take advantage of the geometry of the support surfaces to improve the regulation of the self-centering device.
[0024] Une première amélioration consiste à prévoir des surfaces d'arrêts 10 à l'extrémité des., surfaces 7, de façon à limiter l'amplitude de rotation du support mobile 4. ................... _ ; ; ' - . [0025] Avantageusement, ces surfaces d'arrêts ne présenteront, pas d'arrêtés vives, mais, présenteront, une pente progressive, de façon à éviter les variations . brutales de vitesse'angulaire du support mobile 4 (effet d'amortissement )L Paf'..... exemplë, ces surfaces.', d'arrêt .-.A first improvement consists in providing stop surfaces 10 at the end of the., Surfaces 7, so as to limit the amplitude of rotation of the movable support 4. ............ ........ _; ; '-. Advantageously, these stop surfaces will not present sharp stops, but will present a gradual slope, so as to avoid variations. brutal angular velocity of the mobile support 4 (damping effect) L Paf '..... exemplë, these surfaces.', stop .-.
présenteront un profil parabolique. Afin d'obtenir un effet suffisant -d'amortissement, la courbure dés surfaces d'arrêts 10 sera inférieure à la courbure des galets ou des roulettes 6. ...will present a parabolic profile. In order to obtain a sufficient effect of damping, the curvature of stop surfaces 10 will be less than the curvature of the rollers or rollers 6. ...
[0026] Les surfaces de support 7 peuvent aussi présenter une courbure d'ensemble, tel que représenté aux , figures 5 et 6. -Ainsi,; selon les besoins, on pourra réduire les mouvements de rotation en utilisant une courbure vers le haut lorsque, la. surface de. support est solidaire de la structure fixe du dispositif tel que représenté à la· figure 5. Au contraire, lorsque le dispositif 4 est trop peu mobile pour un; bon ..centrage,, on. pourra utiliser, une . courbure vers Le bas ce qui aura pour effet d'accentuer les mouvements du support mobile 4.The support surfaces 7 may also have an overall curvature, as shown in FIGS. 5 and 6. -Thus ,; as needed, rotational movements can be reduced by using an upward curvature when the. surface of. The support is secured to the fixed structure of the device as shown in FIG. 5. On the contrary, when the device 4 is not very mobile for one; good ..centrage ,, on. will be able to use, one. curvature towards the bottom which will have the effect of accentuating the movements of the mobile support 4.
[0027] La géométrie des surfaces de support peut aussi être modifiée en fonction des besoins, par exemple au moyen de , boulons de réglage 12, ou par tout moyen permettant de déformer élastiguement ou plastiquement les surfaces 7. La déformation des surfaces 7 pourra alors soit être fixée dès'1'origine, soit en fonction du comportement du dispositif lors, de . son utilisation sur . site. Un exemple d'un tel dispositif.....est ·=-représenté à la figure 8. Des actuateurs mécaniquês peuvent aussi être utilisés pour , modifier . le comportement.......du......dispositif.....en ..temps . réel. .lors.The geometry of the support surfaces can also be modified as required, for example by means of adjusting bolts 12, or by any means for elastically deforming or plastically deforming the surfaces 7. The deformation of the surfaces 7 can then be fixed from the beginning, or according to the behavior of the device during, of. its use on. site. An example of such a device is shown in FIG. 8. Mechanical actuators can also be used to modify. the behavior ....... of the ...... device ..... in ..time. real. .during.
de son utilisation^of its use ^
[0028] Enfin,. tel que représenté à la figure 7, des géométries, particulières des surfaces d'appui 7 permettent d'obtenir un '- effet ' d'aüto-centrage, . même en absence d'utilisation de rouleaux coniques. En effet, dans ce cas, l'utilisation de surface inclinée dans le sens de roulement 11 de la bande induit un effet d'auto-centrage. Lorsque la . bande se déporte d'un côté du support, la force d'appui sur ce côté augmente, tandis que la force d'appui de 1'autre côté est réduite. Le galet ou la roulette subissant une force verticale accrue,......i 1 en découle un roulement ou un glissement vers le bas, soit vers l'avant, ce qui fait tourner le support mobile 4 et recentre la bande.Finally ,. As shown in FIG. 7, particular geometries of the bearing surfaces 7 make it possible to obtain a "centering" effect. even in the absence of use of tapered rollers. Indeed, in this case, the use of surface inclined in the rolling direction 11 of the strip induces a self-centering effect. When the. The band moves off one side of the support, the support force on that side increases, while the support force on the other side is reduced. As the roller or the roller experiences an increased vertical force, this results in rolling or sliding downwards, ie forwards, which causes the mobile support 4 to rotate and re-center the belt.
Claims (6)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BE2012/0163A BE1020521A5 (en) | 2012-03-14 | 2012-03-14 | SELF-CENTERING CARRIER BAND SUPPORT DEVICE |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BE201200163 | 2012-03-14 | ||
BE2012/0163A BE1020521A5 (en) | 2012-03-14 | 2012-03-14 | SELF-CENTERING CARRIER BAND SUPPORT DEVICE |
Publications (1)
Publication Number | Publication Date |
---|---|
BE1020521A5 true BE1020521A5 (en) | 2013-12-03 |
Family
ID=46087406
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BE2012/0163A BE1020521A5 (en) | 2012-03-14 | 2012-03-14 | SELF-CENTERING CARRIER BAND SUPPORT DEVICE |
Country Status (1)
Country | Link |
---|---|
BE (1) | BE1020521A5 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2017068055A1 (en) * | 2015-10-20 | 2017-04-27 | Artur Küpper GmbH & Co. KG | Support roller rack having pivot frames and horizontal guiding and retaining slits |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US994910A (en) * | 1909-01-28 | 1911-06-13 | Frank Duesterhoff | Belt-guide. |
CA662877A (en) * | 1963-05-14 | Yoshimura Toshio | Self-stabilizing belt carrier for positioning a belt auto-matically | |
GB1484720A (en) * | 1975-10-21 | 1977-09-01 | Anderson Mavor Ltd | Troughed idler roller steering assembly |
WO1992006908A1 (en) * | 1990-10-23 | 1992-04-30 | Tasman Engineers Pty Ltd. | Improvements in belt conveyor training idlers |
US20080073182A1 (en) * | 2006-09-22 | 2008-03-27 | John Dowling | Belt tracking regulator |
-
2012
- 2012-03-14 BE BE2012/0163A patent/BE1020521A5/en not_active IP Right Cessation
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA662877A (en) * | 1963-05-14 | Yoshimura Toshio | Self-stabilizing belt carrier for positioning a belt auto-matically | |
US994910A (en) * | 1909-01-28 | 1911-06-13 | Frank Duesterhoff | Belt-guide. |
GB1484720A (en) * | 1975-10-21 | 1977-09-01 | Anderson Mavor Ltd | Troughed idler roller steering assembly |
WO1992006908A1 (en) * | 1990-10-23 | 1992-04-30 | Tasman Engineers Pty Ltd. | Improvements in belt conveyor training idlers |
US20080073182A1 (en) * | 2006-09-22 | 2008-03-27 | John Dowling | Belt tracking regulator |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2017068055A1 (en) * | 2015-10-20 | 2017-04-27 | Artur Küpper GmbH & Co. KG | Support roller rack having pivot frames and horizontal guiding and retaining slits |
CN108137242A (en) * | 2015-10-20 | 2018-06-08 | 阿图尔库伯有限两合公司 | The support roller frame of guiding and retention groove with pivot frame and level |
AU2016342298B2 (en) * | 2015-10-20 | 2022-04-07 | Artur Küpper GmbH & Co. KG | Support roller rack having pivot frames and horizontal guiding and retaining slits |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP2503164A1 (en) | Bearing with three and more rows of rolling elements | |
FR2982188A1 (en) | ELLIPTICAL BEARING MANIPULATOR DEVICE | |
EP0803464B1 (en) | Transfer device, in particular for pedestrians, positioned between two transporting elements placed one after the other and carrier provided with such a device | |
FR2994469A1 (en) | DOUBLE-DISCHARGE CHECK VALVE WITH GROOVE BAR | |
BE1020521A5 (en) | SELF-CENTERING CARRIER BAND SUPPORT DEVICE | |
EP2488768B1 (en) | Ball bearing and corresponding bump stop | |
EP3676062B1 (en) | Mechanical device with passive compliance for transmitting rotational movement | |
EP2103555B1 (en) | Conveyor equipped with supports for installing elements such as a side rail for guiding loads | |
WO2011026621A1 (en) | Cable cylinder, and device for aiding persons, comprising such a cylinder built therein | |
FR2965558A1 (en) | TENSIONER DEVICE FOR PARACHUTE CONTROL SPEED LIMITER FOR ELEVATOR | |
EP2878841A1 (en) | Cage for retaining rolling bodies in a roller bearing | |
FR2604138A1 (en) | Device for holding overhead cables driven in advancement in line at a pylon, and overhead cable transportation installation comprising such a device | |
EP3548766A1 (en) | Pendulum damping device | |
EP2514704B1 (en) | Lift overspeed governor rope tensioning device | |
FR2928142A1 (en) | Driven roller conveyor for loads, has rollers mounted by end parts, in grooves such that each roller rests only by its cylindrical wall on strand supported by supporting unit i.e. wing, where end parts is formed of cylindrical pilot points | |
FR2940445A1 (en) | Impact testing apparatus for testing behavior of object i.e. automobile, has guiding rod contacting with cylindrical surface of vertical rollers and for rotating vertical rollers when guiding rod moves in translation | |
FR3037939A1 (en) | MANIPULATOR DEVICE COMPRISING AT LEAST ONE BRAKING DEVICE | |
FR3037938B1 (en) | MANIPULATOR DEVICE COMPRISING A HORIZONTALITY ADJUSTING DEVICE | |
FR2927563A1 (en) | Object e.g. vent tube, cutting device for building site, has adjustable unit to adjust spacing between profiles that support object to be cut, and cutting unit supported by movable element moved with respect to profiles for cutting object | |
FR3080163A3 (en) | TRANSMISSION WITH CONTINUOUS VARIATION OF SPEED | |
CA1326246C (en) | Device for tightening frames | |
FR2748265A1 (en) | Pulley block for supporting and handling loads | |
FR2951513A1 (en) | Thrust bearing for suspension stop of vehicle, has spherical rolling bodies with lower contact point provided with lower rolling track, where normal with each body passing through lower point is perpendicular to axis of symmetry | |
EP0793609A1 (en) | Speed limiter for cases or pallets carrying various loads and which are gravity displaceable on an inclined plane of rollers or wheels | |
FR3069605A1 (en) | PRE-CONTAMINATED PENDULAR DAMPING DEVICE |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
MM | Lapsed because of non-payment of the annual fee |
Effective date: 20220331 |