• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    clamping mechanism and method for its manufacture. a clamping mechanism comprising at least one clamping body (16) and an outer ring (12) and an inner ring (14) arranged coaxially with the outer ring, said inner and outer rings together forming a raceway ( 18) and a clamping contour (20 ') for the clamping body (16), wherein the outer ring (12) and the inner ring (14) are each formed by a plurality of sipes (12a-12d, 14a- 14c) stacked on top of each other and held together firmly.
    公开号:BR112013002161B1
    申请号:R112013002161-6
    申请日:2010-07-29
    公开日:2020-12-15
    发明作者:Benjamin Mito；Kuhlmann Michael
    申请人:Rollax Gmbh & Co. Kg；
    IPC主号:
    专利说明:

    [001] The invention relates to a clamping coupling mechanism that has at least one clamping body, an outer ring and an inner ring disposed coaxially to the outer ring, in which the outer ring and the inner ring together form a track bearing and a tightening contour for the tightening body.
    [002] A typical example of this type of clamping mechanism is a free wheel in which, when an angular moment acts in one direction, the clamping rollers are blocked in the clamping contour, so that the torque can be transmitted, whereas, when the angular moment acts in the opposite direction, the clamping rollers roll along the track so that no angular moment is transmitted. In addition, the clamping coupling mechanisms are used in so-called free-wheel brakes, in which an angular moment can be transmitted in both directions by means of clamping bodies, when the introduction of torque occurs through a release element, while no angular moment is transmitted when torque is introduced through a locking element.
    [003] Conventionally, each of the inner and outer rings is formed as a one-piece metal body, and the clamping contour is obtained by machining, for example, milling, the inner and outer peripheral surface, respectively, of this body. metal. Typically, the raceways are subsequently hardened.
    [004] US 2002/148 696 A1 describes a clamping mechanism of this type, in which the outer ring is formed by a stack of overlapping lamellae.
    [005] DE 10 2006 046 495 A1 describes a clamping mechanism in which the inner ring is formed by two lamellae, between which a switching wheel is arranged as a third lamella, which can rotate relative to the lamellae of the inner ring .
    [006] It is an object of the present invention to provide a tightening coupling mechanism and a method for producing the same, which allows for cost savings.
    [007] This objective is achieved, according to the invention, by the fact that each of the outer and inner rings is formed by a plurality of sipes that are stacked on top of each other and held together fixedly.
    [008] For the production of this clamping mechanism it is not necessary to process expensive metal parts, but the inner ring and the outer ring can be formed simply by stacking a plurality of lamellas in the form of flat steel sheets. over the others. Slats with the desired clamping contour can be obtained at low cost, for example, by cutting, and when the slats are properly connected or fixed in the desired position, the edges of the individual slats together form the clamping contour. The lamellae of the inner ring and the outer ring can be produced with only little waste of material due to the fact that the steel plate that is used in the production of the annular lamellae for the outer ring, and which is cut out from the center of these lamellae, is used as raw material for the corresponding lamella of the inner ring.
    [009] The production method according to the invention has the additional advantage that different clamping mechanisms that are designed for different loads can be produced efficiently, simply by varying the amount of stacked lamellae.
    [010] Useful details of the invention are indicated in the dependent claims.
    [011] The positive blocking of the lamellae can be obtained, for example, by means of pins inserted through them or by means of projections, which are stamped on the surface of the lamellae, which are coupled in corresponding depressions of the respective adjacent lamella.
    [012] In a freewheel brake, an additional release element is required, which has claws that protrude into the raceway between the inner ring and the outer ring and serve to push the clamping bodies to a non-clamping position. The invention therefore offers the advantageous possibility of forming the release element by means of one or more discs which are interposed between the lamellae. This simplifies the production of the release element and, at the same time, provides a favorable distribution of forces.
    [013] When the inner ring must be clamped to a shaft, the invention allows inexpensive production of the wedge structures on the inner peripheral surface of the inner ring because these structures can be formed in the process of cutting the lamella.
    [014] EP 0 743 221 A2 describes an adjustment mechanism for vehicle seats, which is formed by two freewheel brakes interconnected successively. The outer ring of the first freewheel brake can be selectively rotated, using a control lever, from a neutral position in either direction. Thus, the angular momentum is transmitted through a clamping body to the inner ring, which in turn drives the release element, as well as a drive element for the second freewheel brake. The rotation of the drive element adjusts the vehicle seat, for example, adjusting the inclination of the seat back, or adjusting the seat height. The release element of the first freewheel brake is subjected to the force of a return spring. When the actuating lever is released, the return spring causes the control lever to return, while the first free-wheel brake inner ring and the components of the second free-wheel brake remain in the reached position. When an angular moment acts on the drive element, the second freewheel brake enters the locking mode, so that the drive element is locked in the housing. In this way, the seat element to be adjusted is locked in the new adjusted position.
    [015] The invention allows a particularly compact design of such an adjustment mechanism. Preferably, the inner and outer rings of both freewheel brakes are made up of lamellas. The inner ring sipes of the first freewheel brake are connected not only with each other, but also with the release element of the second freewheel brake, to form a block. The drive element is preferably formed by an axle that is non-rotatable to the inner ring of the second freewheel brake. Likewise, the release element of the second freewheel brake and the shanks of the inner ring of the first freewheel brake can also be wedged with the axle through recesses, albeit with a certain clearance, in order to allow a limited rotation of the release element in relation to the axis. This rotation is necessary so that the clamping bodies of the second freewheel brake are kept in the non-clamped position during the adjustment operation. Once the clearance has been consumed, the axle, that is, the drive element is driven directly by the release element and the inner ring of the first freewheel brake. This allows for stable transmission of the high angular momentum, as well as reliable axis orientation.
    [016] Examples of embodiments of the invention will now be described in greater detail in conjunction with the drawings, in which: Figure 1 is a perspective view of a clamping mechanism according to the invention; Figure 2 is a schematic sectional view of a stack of lamellae in the clamping mechanism shown in Figure 1; Figure 3 is a horizontal cross section of a clamping mechanism according to another exemplary embodiment; Figure 4 is a cross-sectional view of the clamping mechanism shown in Figure 3 in another sectional plane; Figure 5 is a vertical section through the clamping mechanism according to Figures 3 and 4; Figure 6 is a horizontal projection of two lamellae, which illustrates a method for producing the clamping coupling mechanism; Figure 7 is an axial cross-section of a regulating mechanism with clamping mechanisms according to another exemplary embodiment of the invention, and Figure 8 is a sectional view taken along line VIII-VIII in Figure 7.
    [017] As an example of a clamping mechanism, a free wheel brake (10) is shown in Figure 1, comprising an outer ring (12), an inner ring (14), and a plurality of bodies clamps (16), which are configured as clamping rollers and, in this case, are arranged in pairs between the inner and outer rings. The inner cylindrical surface of the outer ring (12) forms a raceway (18) for the clamping bodies. The outer peripheral surface of the inner ring (14) forms another raceway (20) for the clamping bodies. This raceway (20), however, is not circular, but forms a tightening contour (20 ') with elevations that project radially outwards that reduce the size of the annular space between the inner and outer rings with a value that is smaller than the diameter of the pinch rollers.
    [018] The inner ring (14) is non-rotatable in wedges (22) of an axis (24). As an example, it should be assumed here that the clamping coupling mechanism (10) is part of a seat adjuster, for example, a height adjuster for an automobile seat. The shaft (24) is then connected to the height adjustment mechanism, either directly or via a transmission that has not been shown, so that a rotation of the shaft (24) will carry out adjustment at the height of the seat. When an external force is exerted on the seat, for example, by the body of a seat occupant, the axis (24) is subjected to an angular moment that tends to rotate it together with the internal ring (14). Thus, however, regardless of the direction of rotation, six of the twelve clamping bodies (16) will enter the narrowing part of the space between the inner and outer rings, so that, through a clamping action, the inner ring (14) is locked in the outer ring (12). In this way, the rotation of the shaft (24) is prevented and, consequently, the seat is kept in the position for which it has been adjusted.
    [019] The clamping bodies (16) form a total of six pairs, and an elastic spacer (26) is placed between each pair of clamping bodies.
    [020] The clamping mechanism (10) also includes a release element that was not shown in Figure 1 and is arranged so that it can rotate on the shaft (24), but is engaged with the wedges (22) with small gap, so that it can be rotated by a small angle in relation to the inner ring (14). This release element is coupled with claws at the interstices between the individual pairs of clamping elements (16).
    [021] When the seat height must now be actively adjusted, an angular momentum is exerted on the release element by means of a drive mechanism, which has not been shown. A small rotation of the release element in relation to the inner ring (14) has the consequence that the claws press one of each brown two respective clamping elements (16) and compress the spacer (26). With this, the clamping element actuated by the claw is prevented from entering more deeply into the narrowing part of the gap between the inner ring and the outer ring and from exerting a tightening action. With the rotation of the release element continuing, the inner ring (14) is dragged through the axis (24). Since the claws prevent the coupling mechanism from locking by tightening, the release element, inner ring (14) and shaft (24) are rotated in the desired direction, so that the seat height is regulated. The clamping bodies (16) roll along the raceway (18) of the outer stationary ring (12). When no angular moment acts on the longest release element, the seat is locked in the position in which it was adjusted.
    [022] The particularity of the clamping mechanism described here is that the inner ring (14) is not formed by a solid metal body, but by a stack of flat, disk-shaped lamellae (14a) a (14c), made of steel sheet. Thus, the tightening contour (20 ') is formed by the interconnected ends of the lamellae (14a) to (14c). Correspondingly, the outer ring (12) is also formed by a stack of lamellae (12a) to (12d) in the example shown. Thanks to this design, the production of the inner and outer rings is significantly simplified. For example, the slats with the desired contour for the inner ring and the outer ring can be cut out simply from a steel sheet with a suitable thickness. Then, the cut-out sipes are stacked on top of each other and cured, so that deformation-resistant raceways can be formed for the clamping bodies (16).
    [023] In order to prevent the lamellae (14a) to (14c) of the inner ring (14) from being rotated or displaced in relation to each other, several projections (28) are pressed outwards, in order to project from a surface of each slide, as can be seen in the cross-sectional view in Figure 2. On the opposite side of each slide, depressions (30) are created that correspond to the projections (28). When the slides are stacked in the manner shown in Figure 2, the projections (28) engage the respective depressions (30) of the adjacent slide, so that the slides are positively fixed to each other. In a corresponding manner, the lamellae (12a) to (12d) of the outer ring (12) are also positively fixed to each other by means of projections (not visible) and corresponding depressions (32).
    [024] Figure 3 is a cross-sectional view of a clamping coupling mechanism (10 ') according to another exemplary embodiment. In this example, the inner race of the outer ring (12) forms a non-circular clamping contour (18 '), while the inner ring (14) forms a circular raceway (20). Once again, the outer ring (12) and the inner ring (14) are made up of lamellae, and one of these respective lamellae is shown in section in Figure 3. The positive blocking of the lamellae of the outer ring (12) is achieved, in this example, by means of pins (34) that are inserted through aligned holes of the lamellae.
    [025] In Figure 3 there is also shown a release element (36) of the clamping coupling mechanism (10 '), and the claws (38) of that release element are visible in the interstices between the clamping bodies (16).
    [026] The lamellar design of the outer ring (12) also allows a new design of the release element (36). While such release elements have so far been formed as cup-shaped elements, which engage with claws that project axially in the space between the inner ring and the outer ring, the release element (36) of the example described here is formed by one or more discs (36a), (36b) (two in the illustrated example), which are interposed between the individual sipes of the outer ring. In Figure 4, the plane of the cross section was chosen so that a disc (36a) can be seen from the front. Figure 5 illustrates the lamellar construction of the clamping coupling mechanism (10 '). The outer ring is formed by six lamellae (12a) to (12f), in this example, and the inner ring has six lamellae (14a) to (14f), which are, respectively, at the same height as the corresponding lamella of the outer ring, as well as two additional slides (14g), (14h) corresponding in their positions and thickness to the discs (36a), (36b) of the release element (36).
    [027] The discs (36a), (36b) of the release element are evenly distributed over the entire height of the clamping mechanism (10 '), and the claws (38) are formed directly on the inner edge of the discs, so that they can act according to the clamping elements (16) through a short lever arm, thus avoiding considerable flexing efforts on the claws.
    [028] In order to allow rotation of the release element (36) in relation to the outer ring (12), the discs (36a), (36b) have respective elongated holes (38) (Figure 4) that receive the pins (34).
    [029] From slides that are identical to slides (12a) to (12d) and (14a) to (14c) in Figures 1 and 2 or to slides (12a) to (12f) and (14a) to (14h) in Figure 5, internal and external rings can be formed, with different thicknesses, so that different types of clamping mechanisms can be efficiently manufactured that are adapted to different load requirements. In the example shown in Figures 3 to 5, the number of discs of the release element (36) can also be varied.
    [030] Typically, in a clamping mechanism the inner ring or outer ring is rigidly connected to a part of the housing. This connection can also be achieved in a simple way by means of the projections (28) shown in Figure 2 or the pins (34) shown in Figure 3. Correspondingly, the discs of the release element (36) will also be held together by pins. Optionally, they can also be held together by the drive mechanism. For example, the outer peripheral edges of the discs (36a), (36b) can be configured as cogwheels, which mesh with a drive pinion, which has not been shown.
    [031] Figure 6 illustrates a method with which the sipes for the inner and outer rings of the clamping mechanism can be cut from a flat steel plate (40), with only a few residues. In the example shown, a lamella (12a) for the outer ring of the clamping mechanism, of the type shown in Figures 1 and 2, or of the type shown in Figures 3 to 5, is cut out of the steel plate. Within this lamella (12a), there remains a piece of sheet approximately circular which serves as a plate (42) to cut a lamella (14a) for an inner ring of the same clamping mechanism or another. The sipes (12a) and (14a) can be formed in a single cutting step or, optionally, in two separate steps. When clamping mechanisms with different diameters are manufactured, it is also possible to cut more than two rings fitted together.
    [032] Figure 7 illustrates an adjustment mechanism, for example, a seat height adjuster for vehicles. The adjustment mechanism has two concatenated coupling mechanisms (10), (10 ') which are respectively configured as free-wheel brakes and are accommodated in a common housing. The housing has a base plate (44) and a cover (46) joined by rivets (48). The blades of the outer ring (12) of the clamping mechanism (10) are interposed between the base plate (44) and the cover (46) and are kept rotating in the housing by the rivets (48). The inner ring sipes (14) of the clamping coupling mechanism (10) are non-rotatively wedged to an axis (24 '), which is rotatably supported in the housing. As in Figure 1, the tightening contour is formed by the outer surface of the inner ring (14).
    [033] A release element (50) of the clamping mechanism (10) is in the form of a flat disc that is also fitted on the axis (24 '), but has a small gap with respect to this axis in the direction of rotation . In the outer edge element, the release element has claws (52) that engage the annular space between the inner and outer rings of the clamping mechanism (10).
    [034] The inner ring (14 ') of the clamping mechanism (10') is formed by a stack of lamellae which are arranged on the release element (50) and are held together with each other and with the release (50) by means of rivets (without reference number). The lower sipes of the inner ring (14 ') in Figure 7 have recesses maintained in engagement with the shaft wedges (24'), so that they, like the release element (50), are rotatable only with limited play in to the axis. The upper lamellae are arranged above the shaft wedges (24 ') and engage the peripheral surface of a cylindrical portion of the shaft (24') along the entire circumference, so that the shaft is supported with high precision.
    [035] The outer ring (12 ') of the clamping coupling mechanism (10') forms the clamping contour of this clamping coupling mechanism and is made up of blades on which an adapter lever (54) is located. The coverslip and the adapter lever (54) are held together by means of rivets (56).
    [036] Between the outer ring sipes (12 ') of the tightening coupling mechanism (10') and the release element (50) of the tightening coupling mechanism (10) a release element (58) is interposed between clamping coupling mechanism (10 '). This release element (58) comprises, on its internal periphery, claws (60) that project upwards (Figure 8) and which engage in the annular space between the inner ring and the outer ring of the clamping mechanism (10 ') . In order to achieve a particularly compact design, the lower heads of the rivets (56) are housed in elongated arched holes of the release element (58).
    [037] The adapter lever (54) has domes for screws (62) that penetrate the elongated arched holes in the cover (46) and allow the assembly of a control lever that has not been shown.
    [038] Figure 8 shows the arrangement of clamping bodies (16 ') and spacers (26') of the clamping mechanism (10 ') between the inner ring sipes (14') and the outer ring sipes (12 ') of the clamping mechanism (10'), as well as the claws (60) of the release element (58).
    [039] The outer ring of the clamping coupling mechanism (10 ’) is surrounded by two annular locking springs (64), (66) (the locking spring (64) being visible only in Figure 7). As shown in Figure 8, the ends of the locking spring (66) are fixed on one side to a shoulder (68) on the inner surface of the cover (46) and on the other side to a shoulder (70) protruding from the element release (58). Correspondingly, the ends of the locking spring (64) are attached to a shoulder (68) attached to the housing and to a shoulder (not shown) of the adapter lever (54).
    [040] The operation of the adjustment mechanism will be described below.
    [041] The locking spring (64) keeps the adapter lever (54) and the drive lever mounted thereon in a neutral position. When the control lever is pivoted from the neutral position in either direction, the adapter lever (54) is rotated about the axis (24 ') and carries the outer ring of the clamping mechanism (10') with it. The clamping bodies (16 ') provide a locking of the clamping coupling mechanism (10'), so that the inner ring (14 ') of the clamping coupling mechanism will also be rotated. The release element (50) of the tightening coupling mechanism (10) also participates in this rotation, and the jaws (52) of this release element provide the unlocking of the lower tightening coupling mechanism (10) in Figure 7.
    [042] In Figure 8, three wedges (74) of the shaft (24 ') are shown in a sectional view. These wedges are coupled with a game in the corresponding recesses (72) of the lamellae of the inner ring (14 '). Once the inner ring (14 ') has been turned slightly, the shaft (24') will therefore be driven together in the direction of rotation.
    [043] By rotating the inner ring and the outer ring of the coupling mechanism by upper tightening (10 '), its release element (58) will also be dragged against the return force of the locking spring (66). The angular momentum is transmitted from the outer ring sipes (14 '), through the clamping elements (16') and the spacing bodies (26 ') to the claws (60) of the release element (58).
    [044] When the actuation lever is now released, the locking spring (66) presses against the recess (70) and returns the release element (58) to the neutral position. Through the release element, the clamping mechanism (10 ') is released. The inner ring (14 ') thus remains in the reached position, and the outer ring, the adapter lever (54), and the control lever return to the neutral position alone. The return movement of the adapter lever is further assisted by the locking spring (64). Although the adapter lever (54) and the outer ring lamella block (12 ') are slightly rotatable with respect to the release element (58), thus the control lever is kept stable in the neutral position.
    [045] The shaft (24 '), at the height of the lower tightening coupling mechanism (10'), has three additional wedges (74) which were indicated in dashed lines in Figure 8. Through these wedges, the shaft (24 ') is slotted without clearance with the inner ring of the clamping mechanism (10). When, by loading the seat, an angular moment acts on the axis (24 '), this angular moment, consequently, will be transmitted to the inner ring of the clamping mechanism (10). However, since the associated release element (50) is free of angular momentum, the clamping bodies (16) of the clamping coupling mechanism (10) lock in such a way that the shaft (24 ') is securely locked in the outer ring of the clamping mechanism (10) and, consequently, in the housing.
    [046] With the aid of the adjustment mechanism (42) it is possible to adjust the vehicle seat in any direction desired by the repeated "pumping", with the control lever and then safely lock the seat in the reached position.
    权利要求:
    Claims (16)
    [0001]
    1. Clamping mechanism comprising at least one clamping body (16, 16 ') and an outer ring (12, 12') and an inner ring (14, 14 ') disposed coaxially in the outer ring, said inner and outer rings in set forming a raceway (20, 18) and a clamping contour (20 ', 18') for the clamping element (16, 16 '), characterized by the fact that the outer ring (12, 12') and the inner ring (14, 14 ') are each formed by a plurality of sipes (12a-12f; 14a-14h) stacked on top of each other and held together firmly.
    [0002]
    2. Clamping mechanism according to claim 1, characterized by the fact that the respective sipes of the inner ring and the outer ring that are arranged on the same level have the same thickness.
    [0003]
    3. Clamping mechanism according to claim 1 or 2, characterized by the fact that the sipes (12a -12f; 14a-14h) are fixed between themselves.
    [0004]
    4. Clamping mechanism according to claim 3, characterized by the fact that the sipes (12a-12d, 14a-14c) have ridges (28) and depressions (30, 32) complementary to each other for positive locking coverslips.
    [0005]
    5. Clamping mechanism according to claim 3, characterized by the fact that the lamellas (12a-12f) are positively blocked by means of pins (34) that pass through them.
    [0006]
    6. Clamping mechanism according to any one of claims 1 to 5, characterized in that the clamping contour (20 ') is formed on the outer peripheral surface of the inner ring (14) formed by the lamellae (14a- 14c).
    [0007]
    Clamping coupling mechanism according to any of claims 1 to 5, characterized in that the clamping contour (18 ') is formed on the inner peripheral surface of the outer ring (12) formed by the lamellae (12a-12f ).
    [0008]
    8. Clamping mechanism according to any one of the preceding claims, characterized by the fact that it is in the form of a freewheel brake that has a release element (36; 58; 50) comprising claws (38, 52 , 60) that interlock between a plurality of clamping elements (16, 16 ').
    [0009]
    9. Clamping mechanism according to claim 8, characterized in that the release element (36) is formed by one or more discs (36a, 36b) interposed between the lamellae (12a-12f) of the ring external.
    [0010]
    10. Clamping mechanism according to any one of the preceding claims, characterized by the fact that the sipes of the inner ring (14, 14 ') have recesses (72) in their inner peripheral surface that they do not keep in engagement with wedges (22, 74) of an axis (24, 24 ') that passes through the inner ring.
    [0011]
    11. Method of manufacturing a clamping mechanism as defined in any one of the preceding claims, characterized by the fact that the sipes (12a -12f; 14a -14h) are cut out of sheet metal, and in which a sheet metal part inside an annular lamella (12a), when it is cut, it is used as raw material (42) to cut another lamella (14a) for the same clamping mechanism or a mechanism clamping coupling with different dimensions.
    [0012]
    12. Adjustment mechanism for vehicle seats, characterized by two successively clamped coupling mechanisms (10, 10 ’), each of which is configured as defined in claim 8.
    [0013]
    13. Adjustment mechanism according to claim 12, characterized by the fact that the blades (12 ') of the first clamping coupling mechanism (10') are superimposed on the release element (50) of the second coupling mechanism by clamping (10) and non-rotatingly connected with this release element.
    [0014]
    14. Adjustment mechanism according to claim 13, characterized by the fact that the clamping coupling mechanisms (10, 10 ') are accommodated in a common housing (44, 46), in which an axis (24' is arranged) ) which passes through the inner rings (14, 14 ') of both clamping coupling mechanisms and is fixed non-rotatably to the inner ring (14) of the second clamping coupling mechanism (10).
    [0015]
    15. Adjustment mechanism according to claim 14, characterized in that the release element (50) of the second clamping mechanism (10) and at least some of the seals of the inner ring (12 ') of the first clamping coupling mechanism (10 ') are held in engagement with the shaft (24') through wedges (74) and recesses (72) such that they can rotate relative to the shaft (24 ') within an angular range limited.
    [0016]
    Adjustment mechanism according to any of claims 12 to 15, characterized in that the outer ring (12 ') of the first clamping mechanism (10) is non-rotatively connected to an adapter lever (54 ) and by means of a first return spring (64) it is held elastically in a neutral position, while the release element (58) of this clamping mechanism is elastically held in neutral by a second return spring (66) ).
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    同族专利:
    公开号 | 公开日
    EP2598765A1|2013-06-05|
    PL2598765T3|2015-03-31|
    KR101439217B1|2014-09-11|
    US8978863B2|2015-03-17|
    CN103180631B|2015-07-15|
    KR20130037715A|2013-04-16|
    EP2598765B1|2014-10-08|
    SI2598765T1|2015-01-30|
    WO2012013234A1|2012-02-02|
    PT2598765E|2014-12-09|
    ES2523750T3|2014-12-01|
    US20130119212A1|2013-05-16|
    BR112013002161A2|2016-05-31|
    JP2013535629A|2013-09-12|
    CN103180631A|2013-06-26|
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    法律状态:
    2019-01-15| B06F| Objections, documents and/or translations needed after an examination request according [chapter 6.6 patent gazette]|
    2019-10-01| B06U| Preliminary requirement: requests with searches performed by other patent offices: procedure suspended [chapter 6.21 patent gazette]|
    2020-09-24| B09A| Decision: intention to grant [chapter 9.1 patent gazette]|
    2020-12-15| B16A| Patent or certificate of addition of invention granted [chapter 16.1 patent gazette]|Free format text: PRAZO DE VALIDADE: 10 (DEZ) ANOS CONTADOS A PARTIR DE 15/12/2020, OBSERVADAS AS CONDICOES LEGAIS. |
    优先权:
    申请号 | 申请日 | 专利标题
    PCT/EP2010/061061|WO2012013234A1|2010-07-29|2010-07-29|Silent ratchet and method for producing same|
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