WO2011147494A1 - Einrichtung mit einer formdichtung - Google Patents
Einrichtung mit einer formdichtung Download PDFInfo
- Publication number
- WO2011147494A1 WO2011147494A1 PCT/EP2011/001112 EP2011001112W WO2011147494A1 WO 2011147494 A1 WO2011147494 A1 WO 2011147494A1 EP 2011001112 W EP2011001112 W EP 2011001112W WO 2011147494 A1 WO2011147494 A1 WO 2011147494A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- component
- cylinder
- molded seal
- piston
- annular
- Prior art date
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
- F16J15/3204—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with at least one lip
- F16J15/3232—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with at least one lip having two or more lips
- F16J15/3236—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with at least one lip having two or more lips with at least one lip for each surface, e.g. U-cup packings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D25/00—Fluid-actuated clutches
- F16D25/08—Fluid-actuated clutches with fluid-actuated member not rotating with a clutching member
- F16D25/082—Fluid-actuated clutches with fluid-actuated member not rotating with a clutching member the line of action of the fluid-actuated members co-inciding with the axis of rotation
- F16D25/083—Actuators therefor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/164—Sealings between relatively-moving surfaces the sealing action depending on movements; pressure difference, temperature or presence of leaking fluid
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/7722—Line condition change responsive valves
- Y10T137/7758—Pilot or servo controlled
- Y10T137/7762—Fluid pressure type
- Y10T137/7769—Single acting fluid servo
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/7722—Line condition change responsive valves
- Y10T137/7837—Direct response valves [i.e., check valve type]
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/7722—Line condition change responsive valves
- Y10T137/7837—Direct response valves [i.e., check valve type]
- Y10T137/7869—Biased open
Definitions
- the invention relates to a device having at least one first component and a second component movably arranged in relation to the first component according to the preamble of claim 1.
- Such devices are known, for example, as a pneumatic actuator cylinder, z. B. for actuating a vehicle clutch in a truck or bus.
- a pneumatic actuating cylinder is known for example from EP 1 344 949 B1.
- a check valve in the end wall of the housing of the actuating cylinder.
- the present invention has for its object to improve a device specified in the preamble of claim 1 way to the effect that the problem mentioned in EP 1 344 949 B1 to compensate for minor leaks is solved more cheaply.
- a molded seal which is required anyway in the device for sealing between two pressure chambers, is added. together with a part of the device used to form an overflow valve.
- the mold seal is included.
- a molded seal is understood to mean a seal with a certain, generally asymmetrical, cross-sectional profile.
- the molded gasket - unlike, for example, an O-ring - has a defined position within the device.
- An overflow valve is a valve which closes above a certain pressure value or a difference of pressures and opens below this pressure or this pressure difference.
- the overflow valve is designed such that it compensates for leaks up to 1, 5 bar, d. H. the spill valve blocks the first space from the second space only when exceeding a pressure value of 1, 5 bar.
- a return element is provided, via which the overflow valve can be acted upon in the opening direction.
- the return element may be formed for example as a compression or tension spring.
- the molded seal has at least one closable through-channel, via which the first space can be connected to the second space.
- the passage can be realized for example in the form of a bore.
- the passageway is closed by a wall of the groove.
- the groove width is greater than the width of the molded seal.
- the molded seal within the groove that is displaceable over the extension of the groove width, as a result of a pressure difference between the first and the second pressure.
- the desired valve function of the overflow valve can be realized.
- the spill valve can be realized in a simple manner.
- At least one return element between the sealable by means of the groove wall side of the passage channel of the molded seal and the groove wall is arranged.
- a certain force is generated, via which the overflow valve can be acted upon in the opening direction.
- the return element can be realized for example in the form of a spring.
- the molded seal on the sealable by means of the groove wall side of the passage channel at least one projecting from the surface of the molded seal return element.
- the restoring element may advantageously be designed to be integrated in the molded seal. This has advantages in the assembly of the device according to the invention, since the restoring element does not have to be installed as a separate component, but is at the same time installed with the onset of the molded seal.
- the return element can also be made of the material of the molded seal. When using an elastic material, the return element generates a spring force whose height can be selected by appropriate shaping of the return element and the material elasticity.
- the overflow valve on the outflow side has an air duct over which Mende air is directed at an angle to the surface of the first and / or second component.
- the outflowing air does not flow parallel or perpendicular to the surface, but at an angle to the surface, ie at an angle not equal to the value 0 degrees or 90 degrees.
- Such an air guide has the advantage that unwanted dust from the surface of the first and / or the second component can be blown away by the air flow and this area can therefore be kept dust-free or at least low dust. This has particular advantages when using the device according to the invention for actuating a vehicle clutch, since in such installation situations increased dust accumulates through the clutch wear.
- the air guide can be integrated in the molded seal, the first component or in the molded seal and the first component.
- the molded seal is designed as a molded sealing ring, in particular as a lip sealing ring. This allows the use of common components that are commercially available.
- a plurality of return elements are arranged distributed over the circumference of the molded sealing ring.
- the device has the following further features:
- the first component is a pneumatically actuable piston
- the second component is a cylinder
- the first space is a compressed air actuating space for the compressed air actuation of the piston
- the compressed air actuating space is formed between the piston and the cylinder and sealed by the molded seal.
- the device has the following further features:
- the piston is designed as an annular piston
- the cylinder is designed as a ring cylinder
- the annular piston is arranged concentrically in the annular cylinder.
- a device with an annular cylinder and an annular piston arranged concentrically on the annular cylinder can hereby be realized, wherein a substantially annular pressure medium chamber is formed between the annular cylinder and the annular piston, and wherein the annular piston is movable under pressure against the annular cylinder when the pressure medium chamber is acted upon.
- the device is designed as a clutch actuating actuating cylinder for actuating a vehicle clutch.
- Figure 1 shows a device according to the invention in sectional view
- FIG. 2 shows the overflow valve realized in the device according to FIG. 1 in enlarged sectional view
- FIG. 3 and 4 embodiments of a molded seal in plan view.
- like reference numerals are used for corresponding elements.
- FIG. 1 shows the device according to the invention in a sectional view, wherein only one half of the device is shown, since the device is designed symmetrically and the other half, not shown is constructed the same.
- annular cylinder 1 with a substantially cylindrical, in the middle in the direction of a longitudinal axis L of the annular cylinder 1 through opening 28.
- the ring cylinder 1 has a first diameter in the region of the opening 28.
- the diameter of the annular cylinder increases to a second, larger diameter up to a wall 29.
- the annular wall 29 may, for. B. serve as a receptacle for a centering of a transmission.
- the annular cylinder 1 further extends over a rear wall 24.
- a fastening opening 25 is provided, via which the annular cylinder can be screwed to a retaining plate of a transmission.
- the ring cylinder 1 also extends in a trained as externa ßere wall area 31 in turn from the rear wall 24 away. As a result, the annular cylinder between the opening 28 bounding wall 32 and the outer wall 31 forms an annular cavity.
- the reinforcing ribs 27 are rela- running narrow construction, the distance between two reinforcing ribs z. B. can be made about three times as large as the width of a reinforcing rib.
- the reinforcing ribs 27 have a shape by which force transmission from the smaller diameter annular cylinder region to the larger diameter region is evenly distributed in the material.
- an annular piston 2 is arranged on the ring cylinder 1, an annular piston 2 is arranged.
- the annular piston 2 forms with the lateral walls 31, 32 of the annular cylinder 1 and the rear wall 24, a pressure medium chamber 3, which via a pressure medium supply port 4 with pressure medium, for. B. compressed air, can be applied.
- an actuating plate 9 is arranged, via which upon pressurization of the pressure medium chamber 3, a clutch release element 1 0 is acted upon with force.
- the actuating plate 9 is connected via a ball bearing 8 and a ball receiving ring 7 with the annular cylinder 2.
- the ball receiving ring 7 is firmly connected to the ring cylinder 2, z. B. pressed or screwed.
- a compression spring 30 is arranged within the pressure medium chamber 3. About the compression spring 30 of the annular piston 2 is pressed with slight bias on the actuator plate 9 against the clutch release element 10. By the compression spring 30 of the annular cylinder 2 is held in the pressureless state in a defined position.
- the ring cylinder 1 has an inner tread 5 and an externa ßere tread 6 for the annular piston 2. All effective between the annular piston 2 and the ring cylinder 1 sealing and stripping 1 1, 12, 13, 14, 1 6 are attached directly to the annular piston 2, ie without additional components such as an intermediate piece or an additional retaining element.
- On the inside of the annular piston 2 ring seals 1 1, 12, 13, 14 are provided, which are in contact with the inner race 5.
- a lip seal 16 is disposed in a circumferential outer groove 20 of the annular piston 2. The lip seal 16 abuts with its sealing lip on the outer running surface 6 of the annular cylinder 1. Above the lip sealing ring 16, an annular chamber 33 is formed.
- the lip sealing ring 16 has a passage 17 through which the pressure medium chamber 3 with the annular chamber 33 is connectable.
- the ring cylinder 1 and the annular piston 2 are made of cast aluminum. On the ring cylinder 1, both the inner tread 5 and the outer tread 6 is provided with an anodization.
- the annular cylinder 1 has radial, around the longitudinal axis L of the annular cylinder encircling reinforcing ribs 21, 22, 23, 47, 48.
- the present invention can be used advantageously not only in the concentric actuating cylinder described with reference to FIG 1, but in any pressurizable devices in which a molded seal is provided between two pressurizable spaces.
- FIG. 2 shows a section of the device according to FIG. 1 in the vicinity of the lip sealing ring 16.
- the housing part 31 of the annular cylinder 1, the annular piston 2 and the lip sealing ring 16 arranged in the groove 20 can be seen.
- the groove 20 is wider than the width of the lip sealing ring 16.
- the lip seal 16 is displaceable in the longitudinal direction. Visible is the lip seal 16 with a sealing lip 52 which rests against the inner wall 6 of the housing portion 31 and the pressure medium chamber 3 seals against the annular chamber 33 connected to the atmosphere.
- the lip seal 1 6 has a passage 17, on the position shown in the figure 2 of the lip seal 16, the pressure medium Chamber 3 is connected to the annular chamber 33.
- the lip sealing ring 16 On the side facing the annular chamber 33, the lip sealing ring 16 has a restoring element 50 which, for example, can be arranged substantially annularly around the outflow opening of the through-channel 17.
- the passage 17 and the return element 50 act together with a wall 51 of the groove 20 to form the overflow valve together.
- the restoring element 50 has a side wall 53 which can run obliquely.
- the lip sealing ring 16 When the pressure in the pressure medium chamber 3 is increased, the lip sealing ring 16 is initially in the position shown in FIG. In this case, air can escape from the pressure medium chamber 3 through the passage 17 into the annular chamber 33 and thus into the atmosphere. With an increase in the pressure in the pressure medium chamber 3 via a predetermined closing pressure, a corresponding dynamic pressure forms as a result of the relatively small passage cross section of the passage channel 17, over which the lip seal ring 16 is moved to the left to the wall 51 of the groove 20. As a result, the passage 17 is closed by the wall 51 and the overflow valve is closed. In this state, no further compressed air can escape from the pressure medium chamber 3.
- the return element 50 which may be formed, for example, of elastic material of the lip seal 16
- a reset of the lip seal 16 at least so far that again air from the pressure fluid chamber 3 via the passage 17 in the Annular chamber 33 and thus can escape into the atmosphere.
- the gap 15 between the lip sealing ring 16 and the wall 51 produced by the restoring element 50 is shown exaggeratedly large in FIG. 2 for the purpose of illustration. In practice, the gap is selected relatively, but sufficient that unwanted compressed air from the pressure medium chamber 3 can escape.
- the air flowing out into the annular chamber 33 via the passage 17 is diverted at an angle through an air guide 55, which may be formed as an oblique shoulder of the lip seal 16, so that the air is directed at an angle to the outer race 6 of the Ring cylinder 1 hits.
- the outflowing air in this case causes the additional advantageous effect that on the tread 6 accumulated dust is blown away.
- FIG. 3 shows a possible realization of a passage opening 17 and of the restoring element 50 on the lip sealing ring 16 in a plan view of a segment of the lip sealing ring 16.
- a plurality of passage channels 1 7 can be provided with corresponding restoring elements 50.
- the annular return elements 50 each have outflow openings 56 in the form of a through-channel. Via the outflow openings 56, the air flowing out of the passage opening 17 can escape from the annular space formed by the annular restoring element 50.
- FIG. 4 shows restoring elements in the form of rectangular elevations 54 on the lip sealing ring 16.
- a pair of elevations 54 are arranged on opposite sides of a through-channel 17.
- the elevations 54 are formed relatively flat, so that further sufficient sealing of the through channels 1 7 can be carried out at a correspondingly high pressure in the pressure medium chamber 3.
- a certain deformation in the form of a deflection of the lip sealing ring 16 is caused by the pressure in the pressure medium chamber 3, through which the outlet openings of the passage channels 17 are pressed against the wall 51 and thus closed.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201180026276.1A CN102918292B (zh) | 2010-05-27 | 2011-03-07 | 带有模制密封件的装置 |
BR112012030187A BR112012030187A2 (pt) | 2010-05-27 | 2011-03-07 | dispositivo tendo uma vedação moldada |
US13/582,885 US9109704B2 (en) | 2010-05-27 | 2011-03-07 | Compressed-air control device with molded seal |
EP11709005.0A EP2577084B1 (de) | 2010-05-27 | 2011-03-07 | Einrichtung mit einer formdichtung |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE201010021806 DE102010021806A1 (de) | 2010-05-27 | 2010-05-27 | Einrichtung mit einer Formdichtung |
DE102010021806.5 | 2010-05-27 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2011147494A1 true WO2011147494A1 (de) | 2011-12-01 |
Family
ID=44115730
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2011/001112 WO2011147494A1 (de) | 2010-05-27 | 2011-03-07 | Einrichtung mit einer formdichtung |
Country Status (6)
Country | Link |
---|---|
US (1) | US9109704B2 (de) |
EP (1) | EP2577084B1 (de) |
CN (1) | CN102918292B (de) |
BR (1) | BR112012030187A2 (de) |
DE (1) | DE102010021806A1 (de) |
WO (1) | WO2011147494A1 (de) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
USD756429S1 (en) * | 2015-02-20 | 2016-05-17 | Flamekeeper Llc | Air control device |
US10605276B2 (en) | 2015-05-12 | 2020-03-31 | Kongsberg Automotive As | Position dependent valve device for control cylinder |
DE102016117091A1 (de) * | 2016-09-12 | 2018-03-15 | Knorr-Bremse Systeme für Nutzfahrzeuge GmbH | Selbstreinigungsmechanismus für pneumatischen Zentralausrücker |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3331673A1 (de) * | 1983-09-02 | 1985-03-21 | Robert Bosch Gmbh, 7000 Stuttgart | Dichtungsanordnung |
EP1267107A1 (de) * | 2001-04-09 | 2002-12-18 | Carl Freudenberg KG | Stangen- und Kolbenprimärdichtung |
US20050074349A1 (en) * | 2003-10-03 | 2005-04-07 | Hool Patrick H. | Pump with reciprocating high pressure seal and valve for vehicle braking systems |
WO2006066547A1 (de) * | 2004-12-24 | 2006-06-29 | Luk Lamellen Und Kupplungsbau Beteiligungs Kg | Dichtung für wandlerüberbrückungskupplung |
EP1344949B1 (de) | 2002-03-12 | 2007-04-11 | WABCO GmbH | Ventileinrichtung für Stellzylinder |
EP1918602A2 (de) * | 2006-10-23 | 2008-05-07 | CNH Italia S.p.A. | Kupplungsanordnung mit Druckablasseinrichtung für durch Fliehkraft entstehenden Druck |
DE102007061951A1 (de) * | 2007-12-21 | 2009-06-25 | Zf Friedrichshafen Ag | Kopplungsanordnung |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB757225A (en) * | 1953-11-13 | 1956-09-19 | British Messier Ltd | Improvements in or relating to fluid pressure seals for pistons, stuffing boxes and the like |
JPS5647410Y2 (de) * | 1976-10-25 | 1981-11-06 | ||
JPS5361595A (en) | 1976-11-15 | 1978-06-02 | Nippon Telegr & Teleph Corp <Ntt> | Liquid phase epitaxial growing method for gaas-algaas |
JPH07117161B2 (ja) * | 1990-08-30 | 1995-12-18 | 昭一 岩本 | ポンプ装置 |
BE1008501A3 (nl) * | 1994-07-13 | 1996-05-07 | Vcst Nv | Transmissie-eenheid voor motorvoertuigen. |
ES2150832B1 (es) * | 1996-06-12 | 2001-06-16 | Fichtel & Sachs Ag | Dispositivo de maniobra para la maniobra, en particular maniobra neumatica, de un embrague de friccion. |
GB2344393B (en) * | 1998-10-15 | 2003-07-09 | Luk Lamellen & Kupplungsbau | Hydraulic release system |
DE10240093A1 (de) * | 2002-08-30 | 2004-04-01 | Dichtelemente Hallite Gmbh | Dichtsystem und Verfahren zum Abdichten |
DE10307864A1 (de) * | 2003-02-25 | 2004-09-02 | Zf Sachs Ag | Betätigungseinrichtung, insbesondere für eine Fahrzeugkupplung |
DE10316838B3 (de) * | 2003-04-11 | 2004-05-06 | Lucas Automotive Gmbh | Kolbeneinrichtung und mit einer Kolbeneinrichtung ausgeführte Kolben-Zylinder-Anordnung |
JP4036785B2 (ja) * | 2003-04-23 | 2008-01-23 | 株式会社ショーワ | 二輪車等のフロントフォークのオイルロック装置 |
JP5507273B2 (ja) * | 2010-01-26 | 2014-05-28 | Nok株式会社 | 密封装置およびこれを用いるポンプ装置 |
-
2010
- 2010-05-27 DE DE201010021806 patent/DE102010021806A1/de not_active Ceased
-
2011
- 2011-03-07 WO PCT/EP2011/001112 patent/WO2011147494A1/de active Application Filing
- 2011-03-07 EP EP11709005.0A patent/EP2577084B1/de active Active
- 2011-03-07 US US13/582,885 patent/US9109704B2/en not_active Expired - Fee Related
- 2011-03-07 CN CN201180026276.1A patent/CN102918292B/zh active Active
- 2011-03-07 BR BR112012030187A patent/BR112012030187A2/pt not_active Application Discontinuation
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3331673A1 (de) * | 1983-09-02 | 1985-03-21 | Robert Bosch Gmbh, 7000 Stuttgart | Dichtungsanordnung |
EP1267107A1 (de) * | 2001-04-09 | 2002-12-18 | Carl Freudenberg KG | Stangen- und Kolbenprimärdichtung |
EP1344949B1 (de) | 2002-03-12 | 2007-04-11 | WABCO GmbH | Ventileinrichtung für Stellzylinder |
US20050074349A1 (en) * | 2003-10-03 | 2005-04-07 | Hool Patrick H. | Pump with reciprocating high pressure seal and valve for vehicle braking systems |
WO2006066547A1 (de) * | 2004-12-24 | 2006-06-29 | Luk Lamellen Und Kupplungsbau Beteiligungs Kg | Dichtung für wandlerüberbrückungskupplung |
EP1918602A2 (de) * | 2006-10-23 | 2008-05-07 | CNH Italia S.p.A. | Kupplungsanordnung mit Druckablasseinrichtung für durch Fliehkraft entstehenden Druck |
DE102007061951A1 (de) * | 2007-12-21 | 2009-06-25 | Zf Friedrichshafen Ag | Kopplungsanordnung |
Also Published As
Publication number | Publication date |
---|---|
EP2577084B1 (de) | 2016-05-11 |
US9109704B2 (en) | 2015-08-18 |
CN102918292B (zh) | 2016-02-10 |
DE102010021806A1 (de) | 2011-12-01 |
BR112012030187A2 (pt) | 2016-09-20 |
US20130001037A1 (en) | 2013-01-03 |
EP2577084A1 (de) | 2013-04-10 |
CN102918292A (zh) | 2013-02-06 |
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