CN203453373U - Damper containing damping device with amplitude selectivity - Google Patents
Damper containing damping device with amplitude selectivity Download PDFInfo
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- CN203453373U CN203453373U CN201320293051.9U CN201320293051U CN203453373U CN 203453373 U CN203453373 U CN 203453373U CN 201320293051 U CN201320293051 U CN 201320293051U CN 203453373 U CN203453373 U CN 203453373U
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- piston rod
- module housing
- piston
- vibration damper
- rod side
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Abstract
The utility model relates to a damper containing a damping device with amplitude selectivity. The damper comprises a damping pipe filled with damping fluid, a bypass and a separating piston both arranged between a work area on a side of a piston rod and a work area far away from the piston rod. A plurality of influx holes are led into a module shell to form fluid connection between a chamber on one side of the piston rod and the work area on the side of the piston rod; the influx holes are expansion formed between the external surface area of the module shell and an internal chamber on the side of the piston rod; and influx holes are the perpendicular to a clashing shaft. The damper containing damping device with amplitude selectivity solves a present technical problem. The damper containing damping device with amplitude selectivity at least improves the connection between the chamber on one side of the piston rod in the compensate space and the work area on the side of the piston rod in the damping pipe; the damping fluid clings to the separating piston and is largely evenly distributed thereon; and the damping fluid flows from a final position in the compensate space in regard to a symmetrical shaft of an axis to drive the separating piston to leave away the final position.
Description
Technical field
The utility model relates to the vibration damper with amplitude selectivity damping device.
Background technique
For example, in DE102005055801B3, known the vibration damper with amplitude selectivity damping device.Vibration damper has the damp tube of filling damp liquid, and piston rod moves back and forth therein, and uses piston rod to make daming piston motion, and the inside of damp tube is divided into the working area of piston rod side and away from the working area of piston rod thus.Daming piston has the grouped spring sheet/disk spring (spring disc) of rigid characteristic, for stretching, extension stage (extension stage) and the compression stage (compression stage) of vibration damper, and daming piston forms the groundwork piston of vibration damper.
Except groundwork piston, vibration damper has amplitude selectivity damping device, it also uses piston rod movement, and this damping device forms the bypass parallel with daming piston on fluid, and this bypass is to construct between the working area of piston rod side and the working area away from piston rod.This bypass comprises the compensation space that is filled with damp liquid, and wherein this compensation space fluidly connects the working area of piston rod side, and connects the working area away from piston rod.In compensation space, receive isolation piston, it can be moved in complex way, compensation space is divided into the chamber of piston rod side and away from the chamber of piston rod like this, wherein in the chamber of piston rod side, be fluidly communicated with the working area of piston rod side, and be communicated with the working area away from piston rod away from the chamber of piston rod.
Bypass is worked, make to have compared with the upper frequency vibrations of smaller tremors amplitude and can not cause activating daming piston in the motion of damp tube inner piston rod of vibration damper, and damp liquid can and flow away from the bypass between the working area of piston rod back and forth through the working area of piston rod side.Yet, larger if vibration amplitude becomes, be set to so through-flow (through-flow) based on compensation space and reciprocating isolation piston arrives the contact surface against damping device, close thus bypass.If isolation piston is in the stretching, extension stage or arrive compression stage and arrived against one in its contact surface, and therefore bypass closes, the through-flow of damp liquid that flows through bypass is stopped, and flow through the back and forth working area of piston rod side and away from the daming piston between the working area of piston rod of damp liquid, has correspondingly increased cushioning effect.
In order to make the chamber of piston rod side fluidly connect the working area of piston rod side, hydraulic connecting conduit is provided, it is introduced on the radially shoulder of piston-rod end.What connect that this radially takes on is the module housing of damping device, and it forms with ring-type approx, and through screw thread/screw (screw), is tightened on the radially shoulder of piston rod.In order to make to connect the working area away from piston rod away from the chamber of piston rod, connecting duct extends through shell attachment portion, the module housing of its adjacent tubular.Therefore, in the situation that there is no the through-flow of daming piston, this daming piston sealing damp tube inner side, can form bypass, and damp liquid is through-flow in bypass, and piston rod, in damp tube, little motion can occur.Adversely, connecting duct axially extends along vibration damper in the radially shoulder of piston rod, to open in the annular surface of the radially shoulder of connecting duct on piston rod side on the one hand, connecting duct is opened in an identical manner on the contact surface of isolation piston/piston separator, isolation piston is that the radially front of shoulder by piston rod forms, and the compensation space on inside limiting.Therefore, on the one hand, for example, on the stayed surface of radially takeing on of piston rod side, cannot support extension stop spring; In addition, the shortcoming of appearance is the buffer body of the isolation piston that consists of responsive elastic material, bumps against with bore edges.In addition, the shortcoming of appearance be damp liquid only in the chamber of the working area of a side inflow piston rod side, and produce the asymmetric exposure that isolation piston leaves its final position.
Model utility content
The purpose of this utility model is at least to improve the fluid of implementing the working area of the chamber of piston rod side and the damp tube inner piston rod side of vibration damper in damping device compensation space to be connected.Especially, object is further to develop damping device, and other element can be arranged on piston rod, and does not affect the bypass effect of damping device.In addition, the purpose of this utility model is that damp liquid reclines isolation piston in equally distributed mode substantially, flows, thereby drive isolation piston to leave its final position in compensation space from its final position about its symmetry axis/axis.
Have according to the vibration damper of the utility model embodiment's amplitude selectivity damping device and solved this object together with significant feature.In other embodiments, pointed out further favourable exploitation of the utility model.
A kind of vibration damper (1) with amplitude selectivity damping device, it comprises: the damp tube (10) that is filled with damp liquid, wherein piston rod (11) can move back and forth, wherein use described piston rod (11) to make daming piston (12) motion, inside by the described damp tube of daming piston (12) (10) is divided into the working area (13) of described piston rod side and away from the working area (14) of described piston rod (11), it is further included in the described working area (13) of described piston rod side and away from the bypass forming between the described working area (14) of described piston rod, it comprises the compensation space (15) that is filled with damp liquid, wherein said compensation space (15) is formed in module housing (16) and fluidly connects the described working area (13) of described piston rod side and away from the described working area (14) of described piston rod (11), so that described bypass is arranged to be parallel to described daming piston (12) at hydraulic directio, it further comprises isolation piston (17), it is received in the compensation space (15) on impact groove (18) movably, and it is divided into the chamber (15a) of described piston rod side by described compensation space (15) and away from the chamber (15b) of described piston rod (11), it is characterized in that, some ostiums (20) are introduced in described module housing (16), the chamber (15a) that is used to form described piston rod side fluidly connects the described working area (13) of described piston rod side, wherein said ostium (20) is the expansion that horizontal described impact groove (18) forms between the outer surface regions (21) of described module housing (16) and the described interior chamber (15a) of described piston rod side.
The utility model comprises technology religious doctrine: some ostiums are introduced in module housing, the fluid that is used to form the chamber of piston rod side and the working area of piston rod side is connected, and wherein ostium is characterized as/is (feature) expansion/extension (extension) that crosscut impact groove/impact groove line forms between the outer surface regions of module housing and the interior chamber of piston rod side.
If some ostiums are present on the side of module housing, isolation piston can be filled Uniform Flow against the chamber of piston rod side, and it can stand result around the uniform pressure of its central shaft.By the fact of single ostium is not only provided, can not produce the asymmetrical stress application of isolation piston, isolation piston can not have a down dip in its guiding in compensation space yet thus.For example, can provide two, preferably three, particularly preferably four or more ostium, when in stretching, extension stage/stretching, extension stage, when piston rod is pulled out the damp tube from vibration damper, by ostium, damp liquid can flow in the chamber of compensation space of piston rod side.The expansion of ostium can laterally be extended/carry out, and particularly respectively radially in the shock Axis Extension of vibration damper or piston rod, yet, slight inclination expansion/extension is also conceivable, and be favourable, so that the open area of the ostium in the outer surface regions of module housing is displaced in compensation space about open area in the direction of piston rod.
Further advantage is, can be evenly and form continuously external upper or the annular surface of the damping device of piston rod side, and there is no ostium opening towards this surface.Therefore, can implement better to have the design of the vibration damper of critical length, because element can be supported near upper surface or annular surface.
Ostium may be provided as and is evenly distributed on circumference, for example two ostiums can form the angle of 180 °, three ostiums form the angle of 120 °, four angles that ostium shape is in 90 °, these angles are toward each other in its bearing of trend, particularly when it radially extends to impact groove/shock axis of vibration damper.
Further advantage is, compensation space comprises inner positive, and isolation piston can become near this inside positive, and it forms contact surface for limiting the percussion movement of isolation piston.Therefore, ostium can be arranged in module housing, so that it is in the transition region of the inner positive inner cylindrical surface to module housing, with inner positive intersecting.For example, in the height of the transition that, each central shaft of ostium can be between the inner cylindrical surface of module housing and the front of compensation space.
According to further embodiment, module housing can have head, and piston rod is connected thereto, and wherein head comprises stayed surface, the direction that it points to the working area of piston rod side, and the extension stop spring that it can support shock absorber reclines.Piston rod can connect on the head that is fastened to module housing by spiral, and at it, having the radially end of shoulder does not need to construct piston rod.Therefore, the module housing providing is bell-shaped, and forms opening in the side of placing with respect to piston rod, and shell attachment portion can be placed in this opening, thereby forms the compensation space of closing.By bell module housing, the stayed surface of shoulder shape is provided, for example extension stop spring this stayed surface that can recline is supported, this stayed surface is used for preventing not clashing into module housing shock mount, for example packing of vibration damper, packs for guiding hermetically piston rod to leave from the working area of damp tube.The head of module housing can have clamping part, and extension stop spring can be centered by this clamping part, particularly can with hold mode, be received in module housing by forming clamping action.
Further advantage is, also can provide spring mountings, and the stayed surface on its abutment module shell is placed, and can support extension stop spring by it.In an identical manner, spring mountings can be arranged in module housing with clamping mode, and spring mountings can, by for example elastic material, particularly be constructed by composite.Spring mountings also can form the extension buffer body as direct adjacent element.
The concrete advantage realizing is by impact extruded explained hereafter module housing, and afterwards particularly by machine drilling technique, ostium is introduced in the impact extruded blank of module housing.Particularly by machine-tooled method, can implement bore process.
Further advantageously, the transition of the inner positive inner cylindrical surface to module housing can comprise depression, and ostium is towards its opening.Especially, can arrange ostium, the central shaft of ostium is reached in the region of depression, or the central shaft of ostium is preferably placed on depression top, so that the intersecting area only slightly dwindling in the little edge section of the ostium of near cylindrical and the sunk area of inner positive transition formation module housing.
According to the further favourable exploitation of amplitude selectivity damping device, valve unit can be provided, it is received in module housing, and this valve unit is arranged at least one the pressure limit valve in bypass as forming.This valve unit is characterized as/has the valve characteristic that arranges more softly than the valve characteristic of daming piston, so that less motoricity acts on piston rod, until bypass is closed by daming piston, and through-flow in daming piston of damp liquid occurs.Especially, be combined with according to the ostium of the utility model structure, by valve unit, can produce favourable damping effect/cushioning effect, by valve unit, can limit the maximum movement speed of isolation piston, so that also by thering is the ostium that dwindles interior stream region, laterally run in the chamber of piston rod side, do not occur in ostium before and the aperture effect that pressure difference index rises afterwards.Especially advantageously, the freedom that can adjust ostium is through-flow, recently becomes possibility with application valve unit advantageous feature.
Accompanying drawing explanation
Together with the description of preferred embodiment of the present utility model, further presented in detail the further measure of the present utility model that improves below by reference to the accompanying drawings.Be illustrated as:
Fig. 1 is the viewgraph of cross-section of the amplitude selectivity damping device of vibration damper,
Fig. 2 is the view with the vibration damper of amplitude selectivity damping device, and wherein the spring mountings of extension stop spring in the module housing of damping device is supported, and
Fig. 3 is the view with the vibration damper of amplitude selectivity device, and wherein extension stop spring is received in the module housing of damping device with clamping mode.
List of reference numbers
1 vibration damper
10 damp tubes
11 piston rods
12 daming pistons
The working area of 13 piston rod sides
14 working areas away from piston rod
15 compensation spaces
The chamber of 15a piston rod side
15b is away from the chamber of piston rod
16 module housing
17 isolation pistons
18 impact groove/shock axis
19 valve units
20 ostiums
21 outer surface regions
22 is inner positive, contact surface
23 inner cylindrical surface
24 heads
25 stayed surfaces
26 extension stop springs
27 spring mountings
28 clamping parts
29 depressions
30 spirals connect
31 shell attachment portions
32 piston unts
33 fluid conduit systems
34 contact surfaces
Embodiment
Fig. 1 illustrates the viewgraph of cross-section through the amplitude selectivity damping device of the damp tube 10 of vibration damper 1, and vibration damper can be as the assembly of vehicle chassis for example, for by wheel of vehicle damping be arranged on vehicle frame.Vibration damper 1 can be embodied as mono-tube shock absorber 1 by way of example, and also can be embodied as in an identical manner dual-tube shock absorber, and has the same characteristic features in protection domain of the present utility model.
The cloth of this damping device between piston rod 11 and daming piston 12 is set up, and wherein daming piston 12 is divided into the working area 13 of piston rod side by the working area of damp tube 10 and away from the working area 14 of piston rod 11, damp tube 10 is filled with damp liquid.In the mode not further being shown specifically, daming piston 12 comprises having rigid characteristic grouped spring sheet/disk spring (spring disc), when daming piston 12 moves back and forth in damp tube 10 by piston rod 11, by spring sheet damp liquid, can flow through daming piston 12.
As basic construction package, damping device comprises module housing 16, and it connects 30 through spiral and is connected with piston rod 11.In abutting connection with module housing 16 be shell attachment portion 31, it tightens to the opening side of module housing 16, the placement contrary to piston rod 11 of this opening side.On shell attachment portion 31, receive daming piston 12, and daming piston 12 is fixed on shell attachment portion 31 through piston unt 32.Therefore,, when piston rod 11 moves through damp tube 10, damping device can be with the motion together with daming piston 12 that is rigidly connected.
In addition, valve unit 19 is received in the pulling assembly between module housing 16 and shell attachment portion 31, and this valve unit 19 is also arranged to the isolation piston 17 in contiguous damping device.Valve unit 19 has and is configured to the valve characteristic softer than the valve characteristic of daming piston 12, and daming piston 12 is as the groundwork piston of vibration damper 1.
Damping device forms bypass between the working area 13 of piston rod side and the working area 14 away from piston rod 11.If piston rod 11, carries out the upper frequency vibrations of little amplitude together with daming piston 12 and damping device, damp liquid can flow through damping device in the working area 13 of piston rod side with between away from the working area 14 of piston rod 11 so.
In the stretching, extension stage, in damp tube 10, in plane in the drawings, upwards guide piston rod 11, the damp liquid that comes from the working area 13 of piston rod side flows in the chamber 15a of compensation space 15 of piston rod side.To this, some ostiums 20 are introduced in module housing 16, and it radially extends, and between the outer surface 21 and inner cylindrical surface 23 of module housing 16, are evenly distributed on the circumference of module housing 16.Therefore, damp liquid can be between the working area 13 of piston rod side and the chamber 15a of piston rod side flows back and forth, thus isolation piston 17 can with shown in the direction of arrow along its impact groove 18, move, impact groove 18 is simultaneously corresponding to the impact groove of vibration damper 1.
In compression stage, wherein in damp tube 10, in plane in the drawings, press piston rod 11 downwards, under damping effect/cushioning effect, the fluid conduit systems 33 of damp liquid in being introduced in shell attachment portion 31 is through in the valve unit 19 chamber 15b of inflow away from the compensation space 15 of piston rod 11.Therefore, away from the chamber 15b of piston rod, be again filled with damp liquid, isolation piston 16 moves upward thus, the chamber 15a size reduction of while piston rod side, and damp liquid overflows in the working area 13 of piston rod side again through ostium 20, and ostium 20 laterally extends, particularly radially extend.
Inner positive 22 are constructed such that inner front gradual change slightly (graduate), and therefore there is circumferential slopes, isolation piston can knock this circumferential slopes, wherein this front, inside is formed for the contact surface 22 of isolation piston 17, and limits the compensation space 15 in positive side module housing 16.Inner positive 22, in the transition zone between the inner cylindrical surface 23 of module housing 16, introduce depression 29.In the utility model, ostium 20 is introduced in the wall of module housing 16, so that it only intersects by regional area and depression.Yet this regional area fully extends to produce ostium 20 through-flow without throttling substantially.Four ostiums 20 are illustrated and are evenly distributed on circumference, and it distinguishes shape angle in 90 ° relative to each other.Ostium 20 is introduced in the material of module housing 16 from outer surface regions 21, and is constructed to blind hole boring, its in compensation space 15 only with depression 29 forming section intersecting areas, damp liquid can flow through it.
Fig. 2 illustrates through the viewgraph of cross-section with the vibration damper 1 of amplitude selectivity damping device, and this example illustrates the layout of extension stop spring 26, and piston rod 11 moves through it.Extension stop spring 26, as the spring suspension of damping device in the stretching, extension stage, is therefore arranged in the working area 13 of piston rod side.Extension stop spring 26 is received on the head 24 of damping device module housing 16 through spring mountings.Therefore can find out, spring mountings 27 stayed surface 25 that reclines is supported, and stayed surface is positioned at the upside of module housing 16.The fact of radially extending due to ostium 20, thus ostium outwards opening in stayed surface 25, and by the layout of spring mountings 27, can not stop through-flow in ostium 20 of damp liquid.Show in addition the damping device with valve unit 19, it is the assembly of damping device equally, and has the valve characteristic more soft than daming piston 12, and daming piston 12 by the working area of piston rod side 13 and away from the working area 14 of piston rod separately.
Fig. 3 illustrates the viewgraph of cross-section of the vibration damper of amplitude selectivity damping device, and reference number is as distribution identical in Fig. 2, and wherein extension stop spring 26 is fixed on clamping mode in the head 24 of module housing 16 through clamping part 28 in this embodiment.Thereby this embodiment illustrates the layout that there is no the extension stop of spring mountings 27 spring 26.Therefore, extension stop spring 26 distolateral directly leans against on the stayed surface 25 of module housing 16, and this embodiment also illustrates the favourable layout by ostium 20, and the extension stop spring 26 that the stayed surface 25 that reclines is arranged can not stop the damp liquid ostium 20 of flowing through.
The utility model is not limited to embodiment the preferred embodiment of indicating above.On the contrary, can expect some variants, in embodiment of different nature substantially, these variants are also used the solution of proposition.Come from all features and/or advantage in claim, specification or accompanying drawing, comprise that CONSTRUCTED SPECIFICATION or space layout are to being absolutely necessary in the combinations of model utility self and great majority variation.
Claims (11)
1. a vibration damper (1) with amplitude selectivity damping device, it comprises:
Be filled with the damp tube (10) of damp liquid, wherein piston rod (11) can move back and forth, wherein use described piston rod (11) to make daming piston (12) motion, inside by the described damp tube of daming piston (12) (10) is divided into the working area (13) of described piston rod side and away from the working area (14) of described piston rod (11), it further comprises
The bypass forming in the described working area (13) of described piston rod side and between away from the described working area (14) of described piston rod, it comprises the compensation space (15) that is filled with damp liquid, wherein said compensation space (15) is formed in module housing (16) and fluidly connects the described working area (13) of described piston rod side and away from the described working area (14) of described piston rod (11), so that described bypass is arranged to be parallel to described daming piston (12) at hydraulic directio, it further comprises
Isolation piston (17), it is received in the compensation space (15) on impact groove (18) movably, and it is divided into the chamber (15a) of described piston rod side by described compensation space (15) and away from the chamber (15b) of described piston rod (11),
It is characterized in that, some ostiums (20) are introduced in described module housing (16), the chamber (15a) that is used to form described piston rod side fluidly connects the described working area (13) of described piston rod side, and wherein said ostium (20) is the expansion that horizontal described impact groove (18) forms between the outer surface regions (21) of described module housing (16) and the described interior chamber (15a) of described piston rod side.
2. vibration damper according to claim 1 (1), it is characterized in that, between the outer surface regions (21) of described module housing (16) and the described interior chamber (15a) of described piston rod side, at least two ostiums (20) are provided, and described in it, ostium is preferably distributed evenly on described circumferencial direction.
3. vibration damper according to claim 1 (1), it is characterized in that, between the outer surface regions (21) of described module housing (16) and the described interior chamber (15a) of described piston rod side, three ostiums (20) are provided, and described in it, ostium is preferably distributed evenly on described circumferencial direction.
4. vibration damper according to claim 1 (1), it is characterized in that, between the outer surface regions (21) of described module housing (16) and the described interior chamber (15a) of described piston rod side, four ostiums (20) are provided, and described in it, ostium is preferably distributed evenly on described circumferencial direction.
5. according to the vibration damper (1) described in any one in claim 1 or 4, it is characterized in that, described compensation space (15) has inner positive (22), described isolation piston (17) can become near described inner positive (22), and it is formed for limiting the contact surface (22) of the described percussion movement of described isolation piston (17), wherein said ostium (20) is arranged in described module housing (16), so that it intersects at described inner positive (22) in the transition region of the inner cylindrical surface to described module housing (16) (23).
6. according to the vibration damper described in any one in claim 1 to 4 (1), it is characterized in that, described module housing (16) has head (24), described piston rod (11) is connected to described head (24), wherein said head (24) comprises the stayed surface (25) of the direction of the described working area (13) of pointing to described piston rod side, and the extension stop spring (26) of described vibration damper (1) the described stayed surface (25) that can recline is supported.
7. according to the vibration damper (1) described in the claims 6, it is characterized in that, spring mountings (27) is provided, and it is near the described stayed surface (25) in described module housing (16), and can support described extension stop spring (26) by described spring mountings (27).
8. according to the vibration damper (1) described in the claims 6, it is characterized in that, the head (24) of described module housing (16) has clamping part (28), by the described extension stop spring of described clamping part (28) (26), can be centered, particularly can with hold mode, be received in described module housing (16) by forming pinch effect.
9. according to the vibration damper (1) described in any one in the claims 1-4, it is characterized in that, described module housing (16) is produced by impact extruded technique, and wherein particularly described ostium (20) is introduced in described module housing (16) by machine drilling technique.
10. according to the vibration damper (1) described in any one in the claims 1-4, it is characterized in that, the transition zone of the described inner positive described inner cylindrical surface (23) to described module housing (16) comprises depression (29), and described ostium (20) is opened towards described depression (29).
11. according to the vibration damper (1) described in any one in the claims 1-4, it is characterized in that, valve unit (19) is provided and is received in described module housing (16), and it is arranged at least one the pressure limit valve in described bypass as forming.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320293051.9U CN203453373U (en) | 2013-05-27 | 2013-05-27 | Damper containing damping device with amplitude selectivity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320293051.9U CN203453373U (en) | 2013-05-27 | 2013-05-27 | Damper containing damping device with amplitude selectivity |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203453373U true CN203453373U (en) | 2014-02-26 |
Family
ID=50133248
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320293051.9U Expired - Lifetime CN203453373U (en) | 2013-05-27 | 2013-05-27 | Damper containing damping device with amplitude selectivity |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203453373U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11320017B2 (en) | 2020-01-06 | 2022-05-03 | Beijingwest Industries Co., Ltd. | Shock absorber assembly |
-
2013
- 2013-05-27 CN CN201320293051.9U patent/CN203453373U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11320017B2 (en) | 2020-01-06 | 2022-05-03 | Beijingwest Industries Co., Ltd. | Shock absorber assembly |
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| GR01 | Patent grant | ||
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Granted publication date: 20140226 |
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