![]() JUNCTION DEVICE FOR CLOSING A BAND OF LOOP MATERIAL AND BAND OF MATERIAL PROVIDED WITH SUCH A JUNCTI
专利摘要:
The invention relates to a connecting device (10) for closing a strip of material (1) in a loop, comprising two joining elements (20, 30) intimately connected to the ends (2, 3) of the strip of material (1). , assembled together by interlocking two teeth (22, 32), and locked by a transverse locking rod (15) inserted into the transverse orifices (14) aligned with the teeth (13) of each toothing. The joining elements (20, 30) are made of a material compatible with that of said web of material, and comprise a tensile core extending longitudinally into the teeth (13), surrounding the transverse orifice (14) teeth (13) of each toothing (22, 32) so that when the connecting device (10) is assembled and locked, the tensile webs of the connecting elements guarantee the tensile strength of said connecting device (10). while remaining very flexible in flexion. 公开号:FR3021580A1 申请号:FR1454900 申请日:2014-05-30 公开日:2015-12-04 发明作者:Pierre-Regis Frey 申请人:TANALS; IPC主号:
专利说明:
[0001] BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a joining device for closing a strip of loop material, such as in particular a conveyor belt. , a transmission belt or the like, this connecting device comprising two connecting elements provided at one end of an assembly zone arranged to be intimately connected respectively to the two longitudinal ends of the material strip, and to a set of teeth. the other end, the teeth being provided respectively in the plane of the connecting elements and being of complementary shape to fit together, the teeth of each toothing having at least one transverse orifice aligned with that of the neighboring teeth, so as to define, when the teeth are nested, at least one transverse passage arranged to accommodate at least one do locking rod. The invention also relates to a strip of material, such as in particular a conveyor belt, a transmission belt or the like, this strip of material being closed in a loop by a joining device as defined above. PRIOR ART: Such a junction device is in particular disclosed in the publication WO 2012/155281 with reference to a toothed belt. The toothed belt, also called toothed belt or synchronous, is in a known manner used to ensure a transmission without sliding, as well as chains or gears, with the advantage of not generating noise. In this type of belt, it is therefore imperative that the pitch of the teeth is fixed and invariable in time. This type of belt can be produced by extrusion in a closed loop or continuous strip of material to cut and assemble either by a final junction or by a removable junction. In the case of a junction, it must not affect neither the pitch of the teeth nor the flexibility of the belt which must continue to wind perfectly around the pulleys it meshes, without play or slipping. . This junction must not lie down or be rigid in bending because of the passage on the pulleys. However, the junction device described in the aforementioned publication is formed of two spring steel plates which, even if they are positioned in the plane of neutral bending of the belt, introduce into the zone of junction of the belt a stiffness in bending incompatible with the function of the belt and strongly penalizing the life of the belt. In addition, the steel is not compatible with the thermoplastic material of the belt and this is the reason why the connecting elements have recesses for allowing the thermoplastic material to be fused. However, the steel junction elements have the advantage of providing tensile strength of the junction, since they are joined together by the interlocking of two very short teeth coupled by a single transverse locking rod forming a joint. . Nevertheless, this junction device must be manufactured in each belt width, which requires management of a large number of references. Indeed, it is not conceivable to produce this joining device in a single dimension, then cut to the width and length adapted to the belt to be equipped. In addition, the assembly of the junction device at the ends of the belt can not be deported to the distributor or the end customer given its specificity. This solution is therefore not satisfactory. The present invention aims at overcoming these drawbacks by proposing a joining device made of a material compatible with that of the material web, having an elongation resistance similar to that of the material web. SUMMARY OF THE INVENTION while offering a high tensile strength, and remaining very flexible in flexion, it gives it a very high resistance to fatigue, this device being furthermore simple to manufacture, inexpensive, reversible and easy to implement by the manufacturer, the distributor, or even the customer, to equip any toothed belt or not, reinforced or not, which can be easily adapted in width and / or length to the dimensions of the belt to be equipped. [0002] For this purpose, the invention relates to a junction device of the kind indicated in the preamble, characterized in that the connecting elements are made of a thermoplastic material compatible with the material of said strip and each comprise at least one drilled traction core. in said thermoplastic material, said tensile core extending longitudinally in said connecting members into the teeth of each toothing and said pull core at least partially surrounding the transverse orifice of the teeth of each toothing so that when said The jointing device is assembled by said locking rod, the tensile webs of the two joining elements increase the tensile strength of said jointing device. According to the embodiments of the invention, each junction element comprises a tensile core disposed in longitudinal open turns between its assembly zone and its toothing, or a plurality of tensile cores arranged in longitudinal open loops between its assembly area and its teeth. In all cases, the strands of the turns or longitudinal open loops formed by said tensile core are arranged in the same longitudinal plane coincides with the neutral fiber of said junction device. [0003] In the case of a strip of material provided with a notched face, the junction elements advantageously comprise a notched face so as to ensure the continuity and pitch of the notches of said strip of material. [0004] The teeth of the connecting elements may comprise parallelepipedic teeth, and the teeth of the teeth may comprise a single transverse orifice arranged to define an axis of articulation when the connecting device is assembled. [0005] The joining elements may also comprise at least one longitudinal slot separating their toothing in at least two parts arranged to receive in the transverse passage defined by the transverse orifices at least two locking rods arranged head to tail. [0006] The joining zone of each connecting element may comprise at least one finger and a recess both elongated and of complementary shape. For this purpose also, the invention relates to a strip of material of the type indicated in the preamble, characterized in that it comprises a junction device as defined above. BRIEF DESCRIPTION OF THE DRAWINGS The present invention and its advantages will become more apparent in the following description of embodiments given by way of non-limiting examples, with reference to the accompanying drawings, in which: - Figure 1 is an exploded view of a connecting device according to the invention disposed between two longitudinal ends of a strip of material, FIG. 2 is a partial view of a strip of material closed in a loop by the joining device of FIG. 1; FIG. 3 is a longitudinal sectional view of one of the elements of the junction device, FIG. 4 is a top view in section of the junction element of FIG. 3, and FIG. perspective view of the connecting device according to an alternative embodiment of the invention assembled by two locking rods arranged head to tail. [0007] Illustrations of the invention and various ways of carrying it out: With reference to the figures, the connecting device 10 according to the invention makes it possible to close a strip of material 1 in a loop, such as in particular a conveyor belt, a transmission belt or similar. The example illustrated in the figures shows a notched transmission belt, but this example is not limiting since the invention applies to any type of material strip, provided or not with a toothed face, provided or not of a reinforcing soul or the like. In the case of a belt provided with a notched face, the joining device 10 will have the same notched face so as to ensure the continuity and pitch of the notches of the material strip 1. The length of the pitch, the width notches, notches, etc. are data set by standards depending on the pulleys meshing this type of belts. The junction device 10 comprises in particular two junction elements 20, 30 which are separate and respectively connected to the longitudinal ends 2, 3 of the strip of material 1 by an intimate assembly preferably made by heat-sealing or the like. For this purpose, the connecting elements 20, 30 of the junction device 10 are made of a material compatible with the material of the material strip 1 to ensure an intimate and durable chemical bond. These materials are mainly thermoplastics and by way of non-limiting example of polyurethanes. In addition, the connecting elements 20, 30 are arranged to extend the strip of material 1 without it being possible to distinguish them and without creating extra thickness. Therefore, they have the same thickness, the same width, the same serrated profile, etc. than those of the material web 1. On the other hand, the ends 2, 3 of the strip of material 1 and the corresponding ends 21, 31 of the joining elements 20, 30 comprise joining zones 4, 5, 21 31 which extend respectively in the plane of the web of material 1 and the joining elements 20, 30. These joining zones 4, 5, 21, 31 may have a rectilinear geometric shape, but preferably comprise more complex geometrical shapes allowing mechanical interlocking. In the figures, these joining zones 4, 5, 21, 31 comprise an alternation of fingers 6, 11 and recesses 7, 12 that are elongated, of triangular shape with rounded, symmetrical and complementary angles so as to be able to engage one in the other before being merged. Of course, any other form of complementary nesting may be suitable. The main advantage of these joining zones 4, 5, 21, 31 lies in the increase of the contact surfaces and in their distribution over an assembly length large enough to improve both the chemical bond and the mechanical connection. between the joining elements 20, 30 and the material web 1. FIG. 2 partially illustrates the material web 1 closed in a loop by the joining device 10 and shows on the one hand the joining zones 4, 21 visible before melting, on the left side of the junction device 10, and secondly the assembly areas 5, 31 invisible after melting, on the right side of the junction device 10. Thus, the junction device 10 is designed to confuse with the material web 1 after assembly and be an integral part of the belt. The connecting elements 20, 30 of the connecting device 10 comprise at their free end a toothing 22, 32. The teeth 22, 32 extend in the plane of said connecting elements 20, 30 and have a complementary geometric shape 3021580 7 for to nest between them. In the illustrated example, the teeth 13 of each toothing 22, 32 comprise a transverse orifice 14 aligned with that of the adjacent teeth 13, so as to define, when the teeth 22, 32 are engaged, a transverse passage arranged to accommodate at least Thus, the transverse orifices 14 and the locking rod 15 form a hinge axis making the connecting device 10 flexible. Of course, this example is not limiting and depending on the specifications of the belt to be manufactured, it is possible to provide several transverse orifices 14 parallel to accommodate a plurality of parallel locking rods 15. The teeth 13 of the teeth 22, 32 are shallow, in the example shown, and of square shape to fit in the longitudinal axis of the material strip 1. These teeth 13 are identical and symmetrical but may be different and asymmetrical. Likewise, they may have other complementary geometrical shapes, such as for example a dovetail shape, which make it necessary to assemble them in an axis perpendicular to the longitudinal axis of the strip of material 1, which is less practical but offers an additional mechanical lock. The transverse orifices 14 formed in each of the teeth 13 may be smooth or structured, bare or provided with an insert, for example in the form of a sleeve having a mechanical reinforcing function. Any other embodiment of these transverse orifices 14 in particular according to the locking rods 15 to 20 receive is possible. The locking rods 15 have a length that extends over the entire width of the junction device 10. They can be smooth, threaded, self-tapping, with head or without head, crimped or not, associated or not with a nut and to a counter-nut, in two nestable parts, etc. In the variant illustrated in FIG. 5, the single locking rod 15 is replaced by two locking rods 15a, 15b which extend over half the width of the junction device 10, each comprising a flat head and are disposed head spade in the same transverse passage formed by the transverse orifices 14 so as to self-lock transversely. In this variant, the joining elements 20, 30 comprise a longitudinal slot 16 which divides each toothing 22, 32 in two equal parts. This slot 16 makes it possible, during assembly of the connecting elements 20, 30, to access a first half of the teeth 22, 32 through the center of the junction device 10 to introduce a first locking rod 15a, and then to access the second half of the teeth 22, 32 by the center of the junction device 10 to introduce the second locking rod 15b. This method of assembly may be particularly advantageous for large widths of material strips 1. Of course, the longitudinal slot 16 may be offset relative to the center of the junction device 10. In this case, locking rods will be chosen. 15a, 15b of adequate length. The number of longitudinal slots 16 is not necessarily limited to one. In this case, we will adapt the number of locking rods and their length. The junction device 10 according to the invention is remarkable in that it is designed to ensure excellent tensile strength of the looped material web 1 provided therewith. To achieve this objective, the connecting elements 20, 30 each comprise at least one traction core 17 embedded in the thermoplastic material and extending longitudinally into the teeth 13 of each toothing 22, 32, as shown in FIGS. 4, to at least partially surround the transverse orifice 14 of each tooth 13 by forming an open or closed loop 18. In the illustrated example, each joining element 20, 30 comprises a single traction core 17 disposed in its thickness, preferably at the center which corresponds to the neutral fiber of the belt, just above the notched face, in longitudinal open turns 19 between its assembly zone 21, 31 and its toothing 22, 32 forming loops 18 around said transverse orifices 14 formed in the teeth 13. Of course, it is also possible to provide a number of cores traction 17 identical to the number of teeth 13, each traction core 17 being disposed in longitudinal open loops 19 between its assembly area 21, 31 and its toothing 22, 32 and around said transverse orifices 14 3021580 9 formed in the teeth 13 It should be noted that each tooth 13 may comprise at least one loop 18 formed by the traction core 17 but may also comprise two loops 18 per tooth 13 or more depending on the width of said dentes 13. Inver if it is possible, it is also possible to provide a loop 18 in a tooth 13 in two or five out of three depending on the tensile strength to be achieved. The term "traction core 17" means one or more son or cables, individual and assembled in strand or sheet, twisted, braided or woven, textile and / or metal. This traction core 17 must adhere to the thermoplastic material of the junction elements 20, 30 and have excellent tensile strength, high flexibility, minimum or even no elongation, good flexural strength. Synthetic continuous filaments will be preferred to metal wires, without this example being limiting. Thus, when the strip of material 1 is closed in a loop by assembling and locking the junction elements 20, 30 of its junction device 10 by means of the locking rod 15, the loops 18 formed by the traction core 17 around the transverse orifices 14 inside the teeth 13 of each toothing 22, 32 intersect transversely and are also locked by the locking rod 15. [0008] The result of this original construction is the obtaining of a mechanically very strong junction, in particular in tension in the longitudinal axis of the material strip 1, while remaining very flexible in flexion to guarantee a good resistance to fatigue. [0009] Industrial application possibilities: The junction device 10 according to the invention can be manufactured according to a simple method of molding in a cavity which corresponds, for example, to the format and the profile of the strip of material 1 for which this device is intended. Two imprints, one imprint for each joining element 20, 30 can be used, since the teeth 22, 32 must be complementary. It is also possible to use the same footprint with removable and specific inserts for each junction element 20, 30. It is advantageous to use a single footprint to manufacture standard and identical junction elements 20, 30, which will then be cut in width and or in length to the dimensions of the material strip 1 to be equipped. In the impression, a first transverse pin is placed in the region intended to form the toothing 22, 32 to create the transverse orifices 14, and a second transverse pin in the opposite zone intended to subsequently form the assembly zone 21, 31. The traction core 17 is deposited in the cavity starting from a longitudinal edge of the cavity and by describing longitudinal turns 19 from one transverse pin to the other transverse pin to arrive at the other edge. longitudinal impression. Buckles 18 are thus formed in particular around the first transverse pin which delimits the transverse orifices 14 formed in the teeth 13 of each toothing 22, 32. A loop 18 can be provided per tooth 13 over the entire length of the toothing 22. 32. It is also possible to provide two loops 18 per tooth 13 over the entire length of the toothing 22, 32. It is also possible to provide a loop 18 on two teeth 13 or any other arrangement. The traction core 17 thus forms inside the footprint a traction sheet, in which all the strands of the turns 19 are situated in the same longitudinal plane, this longitudinal plane preferably being merged with the neutral fiber of Of course, the longitudinal turns 19 formed from one transverse pin to the other may be single turns without crossing or complex turns with at least one central cross in the thickness of the cavity. It is also possible to deposit a plurality of tensile cores 17. In this case, each traction core 17 may be deposited in the longitudinal closed-loop footprint around the two transverse pins. Again, one can provide a number of tensile webs 17 identical to the number of teeth 13 so that each tooth 13 is reinforced by a loop 18, or any other 3021580 11 arrangement compatible with the specifications. In all cases, the longitudinal turns 19 or the longitudinal closed loops may be substantially parallel to each other or crossed in the longitudinal plane of the cavity. After having positioned the traction core 17, the thermoplastic material is poured into the cavity 5 to form one of the joining elements 20, 30. The cavity can be filled in a heating press if necessary. To unmold the joining element 20, obtained 30, the two transverse pins are removed beforehand. When the two joining elements 20, 30 are manufactured, they can be assembled by their toothing 22, 32 with the locking pin or rods 15, 15a, 15b to store, transport, etc. This junction device 10 can be manufactured in the width of the material strips 1 to be equipped. To simplify stock management, it can be manufactured in a standard width and cut longitudinally to the width of the material web 1 to be equipped, or assembled side by side with other identical joining devices to cover large widths of material 1. [0010] The junction device 10 thus produced can be assembled to the material web 1 either at the manufacturer, at a distributor, or at the customer's, since it can be formatted by simple cutting and may be fused to the ends of the material web 1 according to a conventional method. [0011] To equip a material strip 1 with such a joining device 10, the assembly zones 4, 5, 21, 31 are respectively formed in the longitudinal ends 2, 3 of the strip of material 1 and in the elements of FIG. junction 20, 30 of the junction device 10 adapted. In particular, the fingers 6, 11 and the recesses 7, 12 of the assembly zones 4, 5, 21, 31 are created by stamping, water jet cutting, or any other suitable technique. In this case, cuts the traction core 17 integrated in the junction elements 20, 30 without prejudice to the mechanical properties of the junction device 10. This is why in the junction elements 20 30 longitudinal turns or loops are obtained. , the part of the turns or 3021580 12 loops opposite to the toothing 22, 32 having been cut during the creation of the joining zones 21, 31. These joining zones 4, 5, 21, 31 are intimately connected in a corresponding imprint, in a heating press, to permanently secure the connecting elements 20, 30 to the ends 2, 3 of the material web 1. This strip 5 of material 1 provided with its junction device 10 can then equip any type of machine. It can be easily assembled and dismounted thanks to the presence of the connecting device 10 which greatly facilitates the maintenance operations on the machines. [0012] It is clear from this description that the invention achieves the goals set, namely a reversible junction device, inexpensive, easy to implement, chemically compatible with the material strip 1 to be equipped, while offering an optimum tensile strength, or comparable to a strip of closed material without junc tion. [0013] The present invention is not limited to the embodiments described but extends to any modification and variation obvious to a person skilled in the art.
权利要求:
Claims (15) [0001] REVENDICATIONS1. Connecting device (10) for closing a strip of material (1) in a loop, such as in particular a conveyor belt, a transmission belt or the like, this joining device comprising two connecting elements (20, 30) provided at one end an assembly zone (21, 31) arranged to be intimately connected respectively to the two longitudinal ends (2, 3) of the strip of material (1), and of a toothing (22, 32) to the other end, the teeth (22, 32) being respectively provided in the plane of the connecting elements (20, 30) and being of complementary shape to fit together, the teeth (13) of each toothing (22, 32) comprising at least one transverse orifice (14) aligned with that of the adjacent teeth (13), so as to define, when the teeth (22, 32) are engaged, at least one transverse passage arranged to receive at least one locking rod (15); , 15a, 15b), characterized in that the junction elements n (20, 30) are made of a thermoplastic material compatible with the material of said strip (1) and each comprise at least one tensile core (17) embedded in said thermoplastic material, in that said tensile core (17) extends longitudinally in said joining elements (20, 30) into the teeth (13) of each toothing (22, 32) and in that said pulling core (17) at least partially surrounds the transverse orifice (14). ) teeth (13) of each toothing (22, 32) so that, when said connecting device (10) is assembled by said locking rod (15, 15a, 15b), the tensile webs (17) of the two joining elements (20, 30) increase the tensile strength of said joining device (10). [0002] 2. Connecting device according to claim 1, characterized in that each connecting element (20, 30) comprises a traction core (17) disposed in longitudinal open turns (19) between its assembly area (21, 31). and its teeth (22, 32). 3021580 14 [0003] 3. Connecting device according to claim 1, characterized in that each connecting element (20, 30) comprises a plurality of tensile webs arranged in longitudinal open loops between its assembly area (21, 31) and its teeth. (22, 32). [0004] 4. Connecting device according to any one of claims 2 and 3, characterized in that the strands of turns or longitudinal open loops formed by said tensile core are arranged in the same longitudinal plane coincides with the neutral fiber of said device. junction. [0005] 5. Connecting device according to claim 1 for a strip of material (1) provided with a notched face, characterized in that said connecting elements (20, 30) have a notched face so as to ensure continuity and the step notches of said strip of material (1). [0006] 6. Connecting device according to claim 1, characterized in that the teeth (22, 32) of the connecting elements (20, 30) comprise teeth (13) parallelepiped. 20 [0007] 7. Connecting device according to claim 1, characterized in that the teeth (13) of said toothing (22, 32) comprise a single transverse orifice (14) arranged to define a hinge axis when said junction device (10). is assembled. [0008] 8. Junction device according to claim 1, characterized in that said junction elements (20, 30) comprise at least one longitudinal slot (16) separating their toothing (22, 32) in at least two parts arranged to accommodate in the transverse passage defined by said transverse orifices (14) at least two locking rods (15a, 15b) arranged head to tail. 5 10 15 3021580 15 [0009] 9. Connecting device according to claim 1, characterized in that the assembly area (21, 31) of each connecting element (20, 30) comprises at least one finger (11) and a hollow (12) both elongated and of complementary shape. 5 [0010] 10. Belt of material (1), such as in particular a conveyor belt, a transmission belt or the like, this strip of material being closed in a loop by at least one joining device (10) which comprises two joining elements (20, 30) assembled on the one hand at the two longitudinal ends (2, 3) of said strip of material (1) intimately by an assembly zone (21, 31), and on the one hand between them by interlocking two complementary-shaped teeth (22, 32) respectively provided in the plane of each of the joining elements (20, 30), the teeth (13) of each toothing (22, 32) comprising at least one transverse orifice (14) aligned with with that of the adjacent teeth (13), so as to define, when the teeth (22, 32) are engaged, at least one transverse passage arranged to receive at least one locking rod (15, 15a, 15b), characterized in that it comprises at least one junction device (10) according to which conque of the preceding claims, wherein said junction elements (20, 30) are made of thermoplastic material compatible with the material of said strip (1) and each comprise at least one traction core (17) embedded in said thermoplastic material, said traction core (17) extends longitudinally in said joining elements (20, 30) into the teeth (13) of each toothing (22, 32) and in that said pull core (17). at least partially surrounds the transverse orifice (14) of the teeth (13) of each toothing (22, 32) so that, when said connecting device (10) is assembled by at least one locking pin (15, 15a, 15b), said tensile webs (17) increase the tensile strength of said joining device (10). [0011] 11. A strip of material according to claim 10, said strip of material (1) having a notched face, characterized in that said joining elements (20, 3021580 16 30) comprise a notched face so as to ensure continuity and not notches of said strip of material (1). [0012] 12. Band of material according to claim 10, characterized in that the teeth (22, 32) of the connecting elements (20, 30) comprise parallelepipedic teeth (13). [0013] 13. A strip of material according to claim 10, characterized in that the teeth (13) of said toothing (22, 32) comprise a single transverse orifice (14) arranged to define an articulation axis when said connecting device (10) ) is assembled. [0014] 14. Band of material according to claim 10, characterized in that said connecting elements (20, 30) comprise at least one longitudinal slot (16) separating their toothing (22, 32) in at least two parts arranged to accommodate in the transverse passage defined by said transverse orifices (14) at least two locking rods (15a, 15b) arranged head to tail. [0015] 15. A strip of material according to claim 10, characterized in that said joining regions (4, 5; 21, 31) respectively of the longitudinal ends (2, 3) of said strip of material (1) and elements of junction (20, 30) comprise at least one finger (6, 11) and a recess (7, 12) both elongate and of complementary shape so that the joining zones (4, 5; 21, 31) which correspond are nested one inside the other to be merged. 25
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同族专利:
公开号 | 公开日 PL2949965T3|2017-07-31| EP2949965B1|2017-01-04| ES2618502T3|2017-06-21| EP2949965A1|2015-12-02| US20150345588A1|2015-12-03| US9371887B2|2016-06-21| FR3021580B1|2016-07-01|
引用文献:
公开号 | 申请日 | 公开日 | 申请人 | 专利标题 DE444469C|1926-06-11|1927-05-18|Continental Caoutchouc Und Gut|Connection of rubber conveyor belts and rubber drive belts| US3212627A|1962-10-31|1965-10-19|Dunlop Rubber Co|Reinforced mechanical belting| GB2290515A|1994-06-24|1996-01-03|Reekie Mfg Ltd|Open web conveyor connectors| WO2012155281A1|2011-05-17|2012-11-22|Habasit Ag|Belt having a detachable end connection|CN111924418A|2020-07-29|2020-11-13|泰州市光明电子材料有限公司|Polytetrafluoroethylene conveying belt and installation method thereof|DE2251454C3|1972-10-20|1979-02-01|Breco Kunststoffverarbeitungs-Gmbh & Co Kg, 4952 Porta Westfalica|Process for making toothed belt sections endless| ITBO20020062A1|2002-02-05|2003-08-05|Attilio Rubino|TOOTHED BELT JOINT FOR TRANSPORT AND TRANSFER OF PARTS| EP1819614A2|2004-11-03|2007-08-22|ThermoDrive LLC|Thermoplastic belt connector|ITUA20163114A1|2016-05-03|2017-11-03|Chiorino Spa|CONVEYOR BELT WITH DIVISIBLE JOINT| FR3078128A1|2018-02-22|2019-08-23|Imagine|POWER TRANSMISSION BELT AND METHOD FOR MANUFACTURING THE SAME| EP3543194A1|2018-03-23|2019-09-25|Otis Elevator Company|Drive belt for a people conveyor| WO2020113190A1|2018-11-30|2020-06-04|Godsey Gregory A|Helical belt assembly, method of use, and kit therefore| US10807802B1|2019-10-15|2020-10-20|Volta Belting Technology Ltd.|Conveyor belt fastener system and method|
法律状态:
2015-05-29| PLFP| Fee payment|Year of fee payment: 2 | 2015-12-04| PLSC| Search report ready|Effective date: 20151204 | 2016-05-31| PLFP| Fee payment|Year of fee payment: 3 | 2017-05-18| PLFP| Fee payment|Year of fee payment: 4 |
优先权:
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申请号 | 申请日 | 专利标题 FR1454900A|FR3021580B1|2014-05-30|2014-05-30|JUNCTION DEVICE FOR CLOSING A BAND OF LOOP MATERIAL AND BAND OF MATERIAL PROVIDED WITH SUCH A JUNCTION DEVICE|FR1454900A| FR3021580B1|2014-05-30|2014-05-30|JUNCTION DEVICE FOR CLOSING A BAND OF LOOP MATERIAL AND BAND OF MATERIAL PROVIDED WITH SUCH A JUNCTION DEVICE| ES15169201.9T| ES2618502T3|2014-05-30|2015-05-26|Splicing device for closing a band of loop material and band of material provided with said splicing device| PL15169201T| PL2949965T3|2014-05-30|2015-05-26|Connecting arrangement for joining ends of an elongated member and an elongated member comprising said connecting arrangement| EP15169201.9A| EP2949965B1|2014-05-30|2015-05-26|Connecting arrangement for joining ends of an elongated member and an elongated member comprising said connecting arrangement| US14/722,667| US9371887B2|2014-05-30|2015-05-27|Splicing device for closing a looped material band and material band provided with such splicing device| 相关专利
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