EP1488069A2 - Mechanism for tensioning a compensation spring for a closing or sun protection installation - Google Patents
Mechanism for tensioning a compensation spring for a closing or sun protection installationInfo
- Publication number
- EP1488069A2 EP1488069A2 EP03740534A EP03740534A EP1488069A2 EP 1488069 A2 EP1488069 A2 EP 1488069A2 EP 03740534 A EP03740534 A EP 03740534A EP 03740534 A EP03740534 A EP 03740534A EP 1488069 A2 EP1488069 A2 EP 1488069A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- spring
- ring
- mechanism according
- shaft
- brake spring
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
- E06B9/56—Operating, guiding or securing devices or arrangements for roll-type closures; Spring drums; Tape drums; Counterweighting arrangements therefor
- E06B9/60—Spring drums operated only by closure members
Definitions
- the invention relates to a mechanism for operating a closing or sun protection installation.
- the invention also relates to a closing or sun protection installation incorporating a mechanism.
- closing installation means gate doors, shutters, grilles and equivalent equipment.
- a screen which can be a flexible apron or a rigid or semi-rigid panel, is moved opposite an opening in order to selectively close it.
- the weight of this screen exerts on the drive means a variable coupl, in particular as a function of the position of this screen.
- springs called "compensation d" to at least partially compensate for c torque.
- the compensation force exerted by 1 spring is adapted to the torque developed by the screen which influences the drive means. This torque is a function of the dimensions of the screen, its specific weight and its position relative to the opening. It is known to provide gift adjustment means of a spring * of compensation, especially during the initial winding.
- US-A 4,817,927 teaches to mount one end of a compensation spring on a ring capable of turning automatically: on a fixed axis of the installation and to immobilize this ⁇ ring rotating in relation to this axis thanks to a lives which, when adjusting the spring tension, must be loosened. This requires the operator to exercise, when c ⁇ accidental and brutal spring. It is therefore necessary for the operator to manipulate with one hand a tool allowing to exert a torque on the ring and with the other hand to block it, this imposing a particular technical gesture which is not necessarily to the reach of an experienced person.
- the invention particularly intends to remedy by proposing an operating mechanism in which the tension of a compensating spring can be adjusted easily and safely, by means of a simple and reliable device.
- the invention relates to a mechanism for operating a closing or sun protection installation, this mechanism being mounted in or on a fixed struct and comprising a screen for closing an open formed in this structure, whereas 'It includes equalizing at least one spring for compensating for the weight of this nut, this spring being kinematically connected, at one end, with the above-mentioned fixed structure and, at the other end, with the above-mentioned screen.
- This mechanism characterized in that it comprises a unidirectional coupling device including a spring-fr arranged between the compensation spring and the fixed struct or between the compensation spring and the screen, al as means integral with the compensation spring s arranged to exert a locking force on the brake spring with respect to the fixed structure or the screen.
- the mechanism incorporates one or more of the following characteristics:
- the means for exerting the locking force comprise a ring arranged, with the possibility of rotation, around or partially inside an element of circular section.
- the ring can be for a housing for receiving the two curved ends of the brake spring. This housing is advantageously provided with two surfaces capable of exerting on these ends a relative approximation effect.
- Means are provided for adjusting the intensity of the blocking force. These means make it possible to reduce or eliminate the force exerted by the brake spring and thus free one of the ends of the compensation spring to allow adjustment of its tension.
- adjustment means advantageously comprise a mounted ba, with the possibility of rotation, around an element of circular section and provided with a projection capable of being brake. It is also possible to provide for this ring provided with notches or notches for interaction with a tool controlling its angular position around the circular element.
- the tool makes it possible to exert on the ring a force of rotation around the element with a circular sect, this force being transmitted by the projection one or the other of the curved ends of the brake spring, which has the effect dilate it by releasing the ring secured to the compensation spring which p then rotate in the desired direction.
- the abovementioned adjustment means may comprise a shaft for a radial projection capable of being interposed between curved ends of the brake spring.
- the circular element is a fixed central shaft extending substantially the entire width of the opening to be closed.
- the circular element is a housing of a device for driving rotation of a winding member of the shutter screen or of an associated force transmission element.
- the locking force is centripetal and exe on the element with circular section.
- the element with a circular section surrounds the brake spring and a part of the ring which exerts the locking effect, this force being centrifugal and exerted the element with circular section.
- the spring, the ring, the circular element, the control means can be at least partially housed inside a winding shaft of the ec: shutter or an effect transmission element. associated.
- this winding shaft ⁇ advantageously provided with at least one access opening;
- the invention finally relates to a sun protection closing installation which comprises a mechanism as described above.
- Figure 1 is a partial longitudinal section of an installation according to a first embodiment of the invention
- FIG. 2 is an exploded perspective view of the elements shown in detail II in Figure 1
- Figure 3 is a perspective view of the elements shown in Figure 2 seen at an angle;
- - Figure 4 is a view in the direction of arrow IV in Figure 1, when adjusting the compensating spring tension
- - Figure 5 is a longitudinal section of ⁇ installation according to a second embodiment of the invention
- FIG. 6 is a view similar to the figure for an installation according to a third embodiment of the invention.
- FIG. 7 is a perspective view of part of the installation of Figure 6, when adjusting the tension of a compensating spring;
- - Figure 8 is a view similar to the figure for an installation according to a fourth embodiment of the invention;
- FIG. 9 is a view similar to the figure for a mechanism according to a fifth embodiment of the invention.
- FIG. 10 is a section along line X- Figure 9;
- FIG. 11 is a view similar to the figure for a mechanism according to a sixth embodiment of the invention.
- FIG. 12 is a section along line X XII in Figure 11;
- FIG. 13 is a partial longitudinal section of a mechanism according to a seventh embodiment of the invention.
- FIG. 14 is a section along line XIV-XIV in Figure 13.
- FIG. 1 to 4 The installation shown in Figures 1 to 4 includes an apron T intended to be selectively wound around a substantially horizontal geometric axis XX 'fixed relative to the masonry M of a building in which - formed an opening 0 to be closed with the apron T.
- apron T is connected by several straps, one of which is visible in FIG. 1 with the reference 1, to ⁇ winding discs, only one of which is visible in FIG. 1 with the reference 2.
- Two compensating springs 3 3 ' are mounted to exert on the disc 2 an eff ⁇ opposite to the torque resulting from the weight of the apron T] relative to the axis XX'.
- the disks 2 and the like are mounted free in rotation around a shaft 4 with a sect: circular which is fixed, by means of consoles 41, j relative to the masonry M.
- Means for driving the apron T in a rotat around the axis XX ′ can be provided, these drive means being able to be mechanical or electric, alternatively, the apron T is controlled by a tell action of the user on the batten lower of it.
- the springs 3 and 3 ' are each immobilized on the frustoconical surface 51 or 51' of two rings 5 and made integral by keys 52, the ring 5 'and in engagement with the disc 2.
- a first end 31 or 31' a spring 3 or 3 'is wound a surface 51 or 51', a hook being optionally formed to firmly anchor these ends relative to the rings 5 and 5 '.
- the springs 3 and 3' are immobilized on rings 6 and 6 'which each include a frustoconical surface 62 or 62' for receiving the ends 32 32 '.
- the ring 6 As shown in Figures 2 and 3, the ring 6 ⁇ provided with a central opening 61 of circular shape whose diameter allows it to rotate around the shaft The surface 62 is stepped to facilitate the establishment of the end 32 of the spring 3.
- the ring 6 also includes a sleeve 63 in which is formed a notch 64 of the side edges 641 and 642 and the bottom edge 643.
- a spring 7 is arranged around the shaft 4 and the inside of the sleeve 63.
- the ends of the spring 7 are noted 71 and 72 which is a brake spring in that it. able to brake the ring 6 with respect to the shaft 4, that is to say, in practice, to immobilize in rotation the ring around the axis XX 'thanks to a centripetal force E.
- a second ring 8 is also mounted around provided with a projection 81 which extends, relative to a c 82 of the ring 8, in a generally parai direction] to the axis XX '.
- the projection 81 has a width allowing it to be inserted between the ends 71 and 72 of the brake spring 7, while the notch 64 has a width allowing the ends 71 and 72 to be received between edges 641 and 642.
- the ring 8 is also provided with several raim. peripherals 83 which make it possible to easily exert on ring 8 a torque with respect to the axis XX '.
- this pair Ci has the effect of moving the edge 641 of the notch 64 until contacting the end 71 of the spring 7, the edge 641 then exerting the end 71 a force F 1 directed towards the edge 642, this has the effect of tightening the spring 7 on the shaft 4 increasing the intensity of the centripetal force E of the spring block 7 on the shaft 4.
- the movement of the ring 6 thus limited by its interaction with the end 71.
- the brake spring 7 makes it possible to immobilize ring 6 on the shaft 4, despite the couples Ci or C 2 trans by the spring 3.
- Adjustment in the opposite direction can be obtained by exerting a torque C 4 , directed in the opposite direction of the cut.
- the force C 4 induces a displacement of the opposite edge 812 of projection 81 until contact with the end 72, then displacement of this end. towards the edge 641, which has the effect of expanding the spring 7 and allows! thus driving the ring 6 in the direction of the couj C 4 .
- a key 9 can and used to exert the torque C 3 thanks to a force exerted on its handle 91.
- the key 9 is provided with a nose adapted to penetrate one of the grooves 83.
- torque C must be applied, the key 9 is turned over and effort in the opposite direction to the effort F 3 is exerted on handle 91.
- structure shown in Figures 1 to 4 can be modified so that the rings 5 and 5 'are fixed on i. console mounted on the fixed structure of the building, the axis then being rotatable and carrying at its ends c pulleys on which a lifting cable is wound up connected to the apron T.
- the operation is analogous to that mentioned above .
- the elements similar to ceu> first embodiment bear identical references increased by 100.
- fixed shaft 104 is immobilized relative to the masonry of a building thanks to consoles 141 and 141 '.
- X ' the longitudinal axis of the shaft 104.
- Two discs 102 102' are movable in rotation around the shaft 104 and the axis XX 'and allow the controlled winding c deck T intended to close an opening O .
- Two compensation springs 103 and 103 ' have a first end 131 or 131' secured to a disc 102 or 102 'and a second end 132 or 132' secured to a ring 106 or 106 'mounted, with the possibility of rotation, on the shaft 104.
- the ring forms a sleeve 163 inside which is arranged brake spring 107 whose ends 171 and 172 s provided to interact with a one-piece projection 181 has a ring 108 mounted, with the possibility of rotation , aut of the shaft 104.
- the centripetal force E exerted by the spring 107 on the shaft 104 can, as before, be comma thanks to the ring 108.
- An equivalent structure is provided at the level of the ring 106 'which is associated with a brake spring 107' and a control ring 108 '.
- the deck T of an installation can be selectively wound around a horizontal axis XX 'which is a central of a fixed and circular shaft 204, this shaft and supported by a console 241 fixed to the masonry M d
- a spacer disc 202 supports a hollow tube around the shaft 204.
- An equivalent disc is provided on the opposite side of the installation, which makes it possible to maintain the tube 245 in a position centered on the, X-X ', with the possibility of rotation, for the selective winding TM of the apron T.
- a compensating spring 203 is more or less ba] between a frustoconical surface 221 of the disc 202 and i frustoconical surface 261 of a ring 206 similar to bagi 6 and 106 of the first and second embodiments, brake spring 207 and a ring 208 associated with the ring 206, which allows against! the centripetal force E exerted by the spring 207 on the arl 204.
- the ring 208 is provided with notches 283 di which can be introduced an operating member, t as the end 292 of a screwdriver 209. To do this , tube 245 is provided with an orifice 245a into which the tip 292 can be inserted.
- an electric gear motor 343 is housed in a section box circular 304 which is fixed relative to masonry M of a building thanks to a console 341.
- the rear central opening 322 of a drive disc 323 rotation of a hollow tube 345 forming a winding shaft apron T of the installation around a geometric axis X 'which is the central axis of the housing 304.
- a circular spacer 302 is integral with the rotation of the tube 345 and mounted, with the possibility of rotation, around the housing 304.
- a compensation spring 303 is disposed around housing 303, inside the tube 345. This spring 303 ⁇ fixed by one of its ends 331 on the spacer: and by its other end 332 on a ring 306 analogous to the rings 6, 106 and 206 of the embodiments: previous ones.
- a brake spring 307 is disposed around the housing 304 inside a sleeve 363 formed by a ring 306. The curved ends 371 and 372 of the spring 307 are capable of interacting with a projection: of a control ring 308 mounted , with the possibility of rotation, around the housing 304. It is thus possible to influence the intensity of the centripetal force E exerted by the spring 307 on the housing 304.
- the tube 345 is provided with several orifices 34 allowing access to grooves 383 formed on the external radial surface of the ring 308, this in order to control the angular position of the ring 308 around the axis XX 'and to drive, after expansion radial spring 307, the ring 306 rotating around the axis X- to more or less arm the spring 303.
- the apron T of an installation can be selectively wound around a horizontal axis XX 'which is an integral in rotation with a ring 405 pivotally mounted: around the axis XX 'on a support 442 fixed to the console 441 immobilized relative to the masonry M building.
- a shaft 408 extends generally along the axis XX 'passing through the elements 441 and 442 and is equipped, at the level of a first end 408a, with a square drive TM capable of cooperating with a key, a crank or any other means for controlling the rotation of the shaft 408.
- the shaft 408 is surrounded by a ring 406 can; rotate, with limited angular travel, around the end 408b.
- a circlip 492 makes it possible to immobilize axially the ring 406 on the shaft 408.
- the shaft 408 ⁇ provided with a radial projection 481, while the ring ⁇ forms a sleeve 463 which partially surrounds the shaft 4 (at the exception of the projection 481.
- the elements 463 and • are arranged inside a cup 443 extends: a hollow shaft 404 secured to the support 442.
- a brake spring 407 is disposed between the elements 463 and 481, d 'on the one hand, and the cup 443, on the other hand: We note respectively 471 and 472 the ends of the spring 407.
- a compensation spring 403 is disposed between] rings 405 and 406 while being integral in rotation with each of them.
- the like elements. those of the first embodiment bear identical references increased by 500.
- the apron T of a closure installation can be selectively wound around a horizontal axis XX 'which is centered a hollow tube 545 of winding of apron T.
- a console 541 is fixed] relative to the masonry M of a building, this support supporting a housing 504 containing the same elements ⁇ the housing 304 of the fourth embodiment.
- An output arl 544 of the housing 504 is integral with a disc! for driving the tube 545 in rotation.
- a ring 505 (fixed in rotation around the end of the housing 504 further from the console 541, while a second tank
- the ring 508 is pour ⁇ of a projection 581 able to be engaged in a notch E formed by the ring 506.
- this mode of embodiment differs from the previous ones insofar as the unidirectional coupling, which includes a brake spring, is inserted between the compensation spring 503 and the deck T and not between this spring and the masonry M, as in the previous ones.
- the seventh embodiment of the invent shown in Figures 13 and 14 relates to an application of the invention in the case where a spring box 633 used to contain a compensating spring 603 weight of an apron T intended to be wound around 'a horizontal XX' also forming an axis of symmetry of a t 604 supported by a console 641 immobilized by the masonry M of a building.
- One end 631 of the spring 603 is integral with the housing 633a of the box 633 ⁇ rotates around the axis XX 'during the winding or unwinding of the apron T.
- the second extrem 632 of the spring 603 is integral with a ring 606 pivotally mounted around the shaft 604 and which is extended by a sleeve 663 also surrounding the shaft 604 and the interior of which is arranged a brake spring 607 d ⁇ the curved ends 671 and 672 extend in the notch 664 formed in the sleeve 663.
- a ring i provided with a projection 681 engaged in the notch i centripetal force E directed towards the axis XX 'and exerted by brake spring 607.
Landscapes
- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Operating, Guiding And Securing Of Roll- Type Closing Members (AREA)
- Flanged Joints, Insulating Joints, And Other Joints (AREA)
- Joints Allowing Movement (AREA)
- Window Of Vehicle (AREA)
- Emergency Protection Circuit Devices (AREA)
- Cable Accessories (AREA)
- Details Of Television Scanning (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0203944 | 2002-03-28 | ||
FR0203944A FR2837864B1 (en) | 2002-03-28 | 2002-03-28 | VOLTAGE MECHANISM OF A COMPENSATION SPRING FOR A CLOSURE OR SUN PROTECTION INSTALLATION |
PCT/FR2003/000973 WO2003083243A2 (en) | 2002-03-28 | 2003-03-27 | Mechanism for tensioning a compensation spring for a closing or sun protection installation |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1488069A2 true EP1488069A2 (en) | 2004-12-22 |
EP1488069B1 EP1488069B1 (en) | 2008-08-13 |
Family
ID=27839303
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP03740534A Expired - Lifetime EP1488069B1 (en) | 2002-03-28 | 2003-03-27 | Mechanism for tensioning a compensation spring for a closing or sun protection installation |
Country Status (10)
Country | Link |
---|---|
US (1) | US7325584B2 (en) |
EP (1) | EP1488069B1 (en) |
JP (1) | JP4558330B2 (en) |
CN (1) | CN100414069C (en) |
AT (1) | ATE404772T1 (en) |
AU (1) | AU2003258835B2 (en) |
DE (1) | DE60322854D1 (en) |
ES (1) | ES2311714T3 (en) |
FR (1) | FR2837864B1 (en) |
WO (1) | WO2003083243A2 (en) |
Families Citing this family (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100658640B1 (en) * | 2006-02-06 | 2006-12-19 | 곽재석 | Automatic movement ascent device gear of roll screen |
AU2007281600A1 (en) * | 2006-08-01 | 2008-02-07 | Ad-Tech, Llc | Roll-up retractabel sheet device |
DE102006047123B3 (en) * | 2006-09-26 | 2008-04-24 | Bos Gmbh & Co. Kg | The blind assembly |
GB0700706D0 (en) | 2007-01-13 | 2007-02-21 | Mccormick Gregory R | Controlling a position of a hanging flexible covering |
GB0700967D0 (en) * | 2007-01-18 | 2007-02-28 | Louver Life Ltd | Window coverings |
AU2008253606B2 (en) * | 2007-05-24 | 2014-01-09 | Carmelo Joseph Licciardi Di Stefano | A connector |
US20090266931A1 (en) * | 2008-04-24 | 2009-10-29 | Greg Gottschalk | Rolling door assembly and related methods |
US20110024064A1 (en) * | 2009-08-01 | 2011-02-03 | Philip Ng | Spring assist for multi band roller shade |
US8893765B2 (en) | 2012-10-19 | 2014-11-25 | Clopay Building Products Company, Inc. | System for unevenly weighted sectional doors |
US9080361B2 (en) * | 2013-07-18 | 2015-07-14 | Kydrid Door Systems Inc. | Overhead door backup spring system |
US9631425B2 (en) | 2015-09-08 | 2017-04-25 | Crestron Electronics, Inc. | Roller shade with a pretensioned spring and method for pretensioning the spring |
NL2015678B1 (en) * | 2015-10-29 | 2017-05-29 | Coulisse Bv | Roller blind system comprising a releasably mountable spring operated roller blind. |
US10501988B2 (en) * | 2017-02-02 | 2019-12-10 | Hunter Douglas Inc. | Power assist module for coverings for architectural structures |
US10738530B2 (en) | 2018-01-16 | 2020-08-11 | Crestron Electronics, Inc. | Motor pretensioned roller shade |
CZ308287B6 (en) * | 2018-10-29 | 2020-04-15 | Bestadom, s.r.o. | Roller shutter mechanism |
US20220025699A1 (en) * | 2020-07-27 | 2022-01-27 | Eastern Metal Supply Inc. | Torsion spring adjuster |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US225857A (en) * | 1880-03-23 | Curtain-roller | ||
US1726589A (en) * | 1926-05-21 | 1929-09-03 | Schultes Paul | Tensioning-device for roller blinds |
DE500236C (en) * | 1929-07-05 | 1930-06-19 | Paul Schultes | Spring roller for roll curtains or the like with a device for tensioning and relaxing the spring actuating the spring roller |
FR1425353A (en) | 1964-11-20 | 1966-01-24 | Griesser & Cie | Winch for rolling up a blind |
US4372432A (en) * | 1981-03-18 | 1983-02-08 | General Clutch Corp. | Bi-directional clutch |
US4523620A (en) * | 1983-01-17 | 1985-06-18 | Clopay Corporation | Window shade clutch assembly |
US4817927A (en) | 1986-08-21 | 1989-04-04 | Martin Door Manufacturing | Coil torsion spring mounting cones with groove break and method of mounting |
US4981165A (en) * | 1989-04-11 | 1991-01-01 | Millco Products, Inc. | Spring adjustment device for overhead doors |
JPH0538279U (en) * | 1991-10-21 | 1993-05-25 | 三和シヤツター工業株式会社 | One-sided correction device for overhead doors |
JPH06212867A (en) * | 1992-11-30 | 1994-08-02 | Toso Co Ltd | Roll blind with controllable cord |
US5375643A (en) * | 1992-12-22 | 1994-12-27 | General Clutch Corporation | Spring clutch assembly with reduced radial bearing forces |
CN1149660A (en) * | 1995-11-01 | 1997-05-14 | 阳锡胜 | Pull-off rolling door and window |
CN2353877Y (en) * | 1998-12-23 | 1999-12-15 | 财团法人工业技术研究院 | Constant-force balanced shutter-lifting mechanism |
US6173825B1 (en) * | 1999-08-23 | 2001-01-16 | Tai-Ping Liu | Lift control device for a roller shade |
-
2002
- 2002-03-28 FR FR0203944A patent/FR2837864B1/en not_active Expired - Fee Related
-
2003
- 2003-03-27 ES ES03740534T patent/ES2311714T3/en not_active Expired - Lifetime
- 2003-03-27 US US10/508,487 patent/US7325584B2/en not_active Expired - Lifetime
- 2003-03-27 DE DE60322854T patent/DE60322854D1/en not_active Expired - Fee Related
- 2003-03-27 EP EP03740534A patent/EP1488069B1/en not_active Expired - Lifetime
- 2003-03-27 WO PCT/FR2003/000973 patent/WO2003083243A2/en active IP Right Grant
- 2003-03-27 CN CNB03807270XA patent/CN100414069C/en not_active Expired - Fee Related
- 2003-03-27 AT AT03740534T patent/ATE404772T1/en not_active IP Right Cessation
- 2003-03-27 AU AU2003258835A patent/AU2003258835B2/en not_active Ceased
- 2003-03-27 JP JP2003580663A patent/JP4558330B2/en not_active Expired - Fee Related
Non-Patent Citations (1)
Title |
---|
See references of WO03083243A2 * |
Also Published As
Publication number | Publication date |
---|---|
FR2837864B1 (en) | 2004-06-11 |
WO2003083243A9 (en) | 2004-01-15 |
DE60322854D1 (en) | 2008-09-25 |
AU2003258835A1 (en) | 2003-10-13 |
WO2003083243A3 (en) | 2003-12-04 |
ATE404772T1 (en) | 2008-08-15 |
EP1488069B1 (en) | 2008-08-13 |
JP2005521815A (en) | 2005-07-21 |
US20050150615A1 (en) | 2005-07-14 |
CN1643230A (en) | 2005-07-20 |
JP4558330B2 (en) | 2010-10-06 |
AU2003258835B2 (en) | 2008-10-02 |
WO2003083243A2 (en) | 2003-10-09 |
FR2837864A1 (en) | 2003-10-03 |
CN100414069C (en) | 2008-08-27 |
US7325584B2 (en) | 2008-02-05 |
ES2311714T3 (en) | 2009-02-16 |
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