EP2279460A1 - Uhrmechanismus und modul mit derartigem mechanismus - Google Patents
Uhrmechanismus und modul mit derartigem mechanismusInfo
- Publication number
- EP2279460A1 EP2279460A1 EP09749752A EP09749752A EP2279460A1 EP 2279460 A1 EP2279460 A1 EP 2279460A1 EP 09749752 A EP09749752 A EP 09749752A EP 09749752 A EP09749752 A EP 09749752A EP 2279460 A1 EP2279460 A1 EP 2279460A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- control
- pinion
- control rod
- rack
- gear
- 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.)
- Withdrawn
Links
Classifications
-
- G—PHYSICS
- G04—HOROLOGY
- G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
- G04B27/00—Mechanical devices for setting the time indicating means
- G04B27/02—Mechanical devices for setting the time indicating means by making use of the winding means
- G04B27/04—Mechanical devices for setting the time indicating means by making use of the winding means with clutch wheel
Definitions
- the present invention relates to a timepiece mechanism comprising a control rod pivotally mounted and movable between at least two axial positions, a control gear mounted to rotate with said control rod, and at least one an actuating member arranged to cooperate with said control pinion when the control rod occupies one of the axial positions.
- the invention also relates to a module comprising such a mechanism.
- This type of mechanism is for example a winding and setting mechanism which conventionally comprises a winding stem on which a sliding pinion, fixed in rotation with the winding stem, can slide between a winding position and a time setting position.
- the sliding pinion In the winding position, the sliding pinion cooperates with a first actuating member constituted by a winding pinion and in the setting position, the sliding pinion cooperates with a suitable return which constitutes a second actuating member.
- the different parts are arranged on the winding stem, starting from the outside to the center of the movement in the following order: winding pinion, sliding pinion, return for setting the time.
- the passage from one position to another is effected by means of a pull tab cooperating with the winding stem and a rocker whose end is housed in a notch provided on the sliding pinion.
- the zipper and the latch represent the disadvantage of complicating the mechanism in its construction and operation.
- a timepiece mechanism comprising a rod movable between three axial positions and two pinions integral in rotation of the rod and integral in translation during the movements of the rod, each of these gears cooperating with a single actuator to perform a single function, namely setting the time and actuation of the date.
- the control rod is mounted in a bracket directly attached to the movement plate. The positioning of the rod must be precise so that the control gear mounted on the rod cooperate properly with their actuators arranged around the rod.
- An object of the present invention is therefore to overcome these disadvantages, by providing a module comprising a mechanism for setting the time and reassembly, and more generally for the actuation of a function of a watch movement , allowing for simplified construction and operation.
- Another object of the present invention is to provide a timepiece module independent of the frame of a movement, simple and compact design, easily removable to be used on any type of movement, without reviewing the movement design. Disclosure of the invention
- a module for actuating an element of a watch movement intended for to be mounted on a frame of said movement, said module containing a mechanism comprising a control rod pivotally mounted and movable between at least two axial positions, a control gear mounted to rotate with said control rod, and at least one control member. actuation arranged to cooperate with said drive gear when the control rod occupies one of the axial positions, said control gear being furthermore integral in translation with said control rod when the latter moves from one to the other. other of said two positions.
- said module further comprises an independent box in which said mechanism is contained, and connecting means coming out of the box and arranged to be able to kinematically connect the actuating member to the element of the movement to be actuated, of so that said actuator can actuate said element regardless of the position of the module on the frame of the movement.
- the module according to the invention is particularly compact, removable and easily interchangeable. The drive gear and its actuator being mounted together in the housing, their cooperation is always guaranteed, regardless of the position of the module.
- connection between the element to be actuated and the module can be ensured directly by the connection means present on the module or by simply adding other references, guaranteeing in a simple and precise way the transmission of information from the pinion control and its actuator via the connection means incorporated in the module, regardless of the position of the module.
- the connecting means can be mounted on the housing in a steerable manner.
- the element to be actuated may be constituted by display members, and the corresponding actuating member may comprise a time setting wheel mounted free to rotate on the rod.
- control the control gear comprising, on its side facing the time setting wheel, a toothing adapted to cooperate with the toothing of the time setting wheel to correct the time.
- the connecting means between the time setting wheel and the display members may comprise at least one return mounted free to rotate on the housing.
- the element to be actuated may be a mainspring
- the corresponding actuating member may comprise a winding pinion arranged to be kinematically connected and at least temporarily to said mainspring by the connecting means, said winding pinion being rotatably mounted on the control rod, the control pinion comprising, on its face facing the winding pinion, a toothing adapted to cooperate with said winding pinion for reassembly said movement.
- the connecting means between the winding pinion and the mainspring can comprise a tab projecting from the housing and rotatably mounted on said housing, said tab supporting at least one return arranged on the one hand to mesh with the winding pinion. and on the other hand to be kinematically connected and at least temporarily to said barrel spring.
- the mechanism may comprise at least two actuators, one to correct the time and the other for reassembly, such as those described above, and the pinion of The control is then arranged so that on the control rod, starting from the outside towards the center, the time setting wheel, the control gear and the winding pinion.
- the actuating member may comprise a rack adapted to move perpendicularly to the control rod in a bidirectional movement, said rack comprising the connecting means arranged to cooperate with the element to actuate, and the drive gear may comprise a toothing adapted to cooperate with the toothing of the rack so as to move said rack and its connecting means.
- the toothing of the rack is chosen so that, in one position, the control pinion cooperates with the rack, and that the control pinion can pass through the teeth of the rack to reach the other position.
- the mechanism may comprise a first control gear for setting the time and reassembly and a second control gear arranged to cooperate with a rack for the actuation of another element.
- the first and second control gears being arranged so that, on the control rod, from the outside towards the center, the second control gear, the setting wheel on time, the first control gear and the winding pinion, and the control rod is movable between three axial positions, a first position in which the first control gear meshes with the winding pinion, a second position according to which the second drive gear meshes with the rack, and a third position in which the first drive gear meshes with the setting wheel, the second drive gear having crossed the teeth of the rack.
- the mechanism further comprises a selector spring cooperating with the control rod and with a positioning member for defining the positions of the control rod.
- control rod may comprise a first removable element and a second element housed inside the housing.
- the present invention also relates to a clockwork movement mechanism that can be used in the actuation module as described above, comprising a control rod pivotally mounted and movable between at least two axial positions, a mounted control pinion. integral in rotation on said control rod, and at least one actuating member arranged to cooperate with said control pinion when the control rod occupies one of the axial positions, said control gear being furthermore integral in translation with said control rod when it moves from one to the other of said two positions.
- the actuating member is arranged to be kinematically connected to display members of a clockwork movement, and comprises a time setting wheel mounted free to rotate on the control rod, the pinion of control comprising, on its side facing the time setting wheel, a toothing adapted to cooperate with the toothing of the time setting wheel to correct the time.
- the present invention also relates to a clockwork mechanism usable in the module as defined above, comprising a control rod pivotally mounted and movable between at least two axial positions, a control gear mounted rotatably mounted on said control rod, and at least one actuating member arranged to cooperate with said control pinion when the control rod occupies one of the axial positions, said control pinion being furthermore integral in translation with said control rod when it moves from one to the other of said two positions.
- the actuating member comprises a winding pinion arranged to be kinematically and at least temporarily connected to a mainspring of a clockwork movement, said winding pinion being mounted free to rotate on the control rod, the control gear comprising, on its face facing the winding pinion, a toothing adapted to cooperate with said winding pinion for reassembly of said movement.
- the mechanism may comprise at least two actuators, one to correct the time and the other for reassembly, and the control gear is arranged so that are, on the control rod, from the outside towards the center, the time setting wheel, the drive gear and the winding pinion.
- the present invention also relates to a watch movement mechanism usable in the module as defined above, comprising a control rod pivotally mounted and movable between at least two axial positions, a control gear mounted rotatably on said control rod, and at least one actuating member arranged to cooperate with said control pinion when the control rod occupies one of the axial positions, said control pinion being furthermore integral in translation with said control rod when it moves from one to the other of said two positions.
- the actuating member comprises a rack adapted to move perpendicularly to the control rod in a bidirectional movement, said rack including connecting means arranged to cooperate with the element to be actuated, the control gear comprising a toothing adapted to cooperate with the teeth of the rack to move said rack and its connecting means.
- the mechanism may comprise a first control gear for setting the time and reassembly and a second control gear arranged to cooperate with a rack for the actuation of another element of the watch movement, the first and second control gears being arranged so that on the control rod, from the outside towards the center, the second control gear, the time setting wheel, the first gear control and the winding pinion, the control rod being movable between three axial positions, a first position in which the first control pinion meshes with the winding pinion, a second position in which the second pinion meshes with the rack. , and a third position in which the first control gear meshes with the setting wheel, the second control gear having passed through the teeth of the rack .
- the present invention also relates to a timepiece comprising a module as defined above.
- FIGS. 1 and 2 are perspective views respectively showing the top and the bottom of a module according to the present invention
- FIGS. 3 and 4 are respectively a sectional view and a top view of the module of the invention
- the control rod being in a first winding position
- - Figures 5 and 6 are respectively a sectional view and a top view of the module of the invention, the control rod being in a second actuated position of another function
- FIGS. 7 and 8 are respectively a view in section and a view from above of the module of the invention, the control rod being in a third setting position
- FIG. 9 is a perspective view representing the module according to the invention mounted in a housing provided on the plate of a movement.
- the mechanism and the timepiece module comprise two control gears and three actuating members, to namely a winding pinion, a time setting wheel and a rack for actuating another function, the control rod can then occupy three positions.
- a module 1 according to the invention comprising a housing 2 and an actuating mechanism of an element of a watch movement.
- the mechanism according to the invention comprises a control rod 3 mounted inside the housing 2, pivoting in the plane of the timepiece, and movable in translation between three positions axial.
- the control rod 3 comprises a first element 4 and a second element 5 housed essentially inside the housing 2.
- the first element 4 is removably arranged inside the second element 5 so that it can be dismounted easily and to be able to easily remove the movement from its box.
- the elements 4 and 5 of the rod are secured by means of a screw 6. It is obvious that the elements 4 and 5 can be replaced by any other broken rod device.
- the second element 5 of the control rod 3 has a first cylindrical zone 7 comprising a circular groove 8 whose operation will be explained below.
- the element 5 then has a square 9 and then a second cylindrical zone 10. On the square 9 is mounted a first control gear 11, which is thus integral in rotation with the control rod 3.
- a ring 12 driven on the element 5 of the control rod 3 and a coil spring 44 arranged to keep the control pinion 11 in contact with the ring 12 so as to make the control pinion 11 integral in translation with said control rod 3 as it moves between its three axial positions.
- a toothed bush 13 On the cylindrical portion 7 of the element 5 of the control rod 3 is driven a toothed bush 13, constituting a second control pinion integral in rotation and in translation of the control rod 3.
- a first member of actuation is constituted by a winding pinion 15. Said winding pinion 15 is mounted free to rotate on the element 5 of the control rod 3 on the side of a watch movement (not shown) and is locked in translation by means of a bearing 45 of appropriate shape and driven on the housing 2.
- the winding pinion 15 is arranged to be kinematically connected and at least temporarily to a mainspring (not shown) of said movement.
- a mainspring (not shown) of said movement.
- a lug 16 projecting from the housing 2 and rotatably mounted around a pivot 17 on the housing 2.
- Said leg 16 supports two references, a first reference 18 arranged to mesh with the toothing 19 of the winding pinion 15, and a second reference 20 arranged to be kinematically connected and at least temporarily to the mainspring.
- the lug 16 can tilt and disengage the return 20 of the ratchet barrel to disengage and avoid rotating the control rod 3 during automatic winding.
- the winding pinion 15 and the control pinion 11 comprise a Breguet toothing 21 for the control pinion 11 to cooperate with the winding pinion 15 for reassembly of the movement when the control rod 3 is in the winding position. Thanks to the Breguet toothing, meshing between the control pinion 11 and the winding pinion 15 occurs only when the control rod 3 is turned in the direction of reassembly. In the other direction, the control pinion 11 can rotate without driving the winding pinion 15.
- the control pinion 11 comprises a singing toothing 22 facing and adapted to cooperate with a set of teeth 23 of a clocking wheel 24.
- Said wheel setting hour 24 is rotatably mounted on the toothed sleeve 13 of the element 5 of the control rod 3 and constitutes a second actuating member for correcting the time.
- the hour-setting wheel 24 comprises a toothing 25 and is arranged so that the toothing 25 meshes with a return 26 mounted free to rotate on the housing 2, itself meshing with a return 27 mounted freely in rotation on the housing 2 and kinematically connected to display members (not shown) of the watch movement.
- the module 1 comprises a third actuating member consisting of a rack 30, of generally cylindrical shape.
- Said rack 30 is adapted to move perpendicularly to the control rod 3 in a bidirectional front-rear movement, and is held by two leaf springs 31 fixed on either side of the housing 2 (see FIG 2).
- the rack comprises a toothing 32 adapted to cooperate with the toothing 33 of the toothed sleeve 13.
- the toothing 32 of the rack is in the form of a pyramid so that it can be traversed by the toothing 33 of the toothed sleeve 13 avoiding any collision, when the control rod 3 is moved to occupy the third position, as will be seen below.
- the actuating means of the rack 30 are constituted by two actuating fingers 34 provided on the cylindrical body of the rack. These actuating fingers 34 protrude from the housing 2 which comprises two channels 35 in which said actuating fingers 34 may flow.
- the actuating fingers 34 are arranged to cooperate with a mechanism (not shown) of the watch movement, which can for example, a date correction mechanism of a calendar, a mechanism for activating a minute repeater, a mechanism for engaging a chronograph, etc.
- actuating means of the rack may also consist of a reverse system, that is to say a groove provided on the body of the rack arranged to be able to move pins cooperating with a mechanism of the watch movement.
- the control pinion 11 and the toothed sleeve 13 are arranged on the control rod 3 so that, on the control rod 3, starting from the outside towards the center, the toothed sleeve 13, the time setting wheel 24, the control gear 11 and the winding pinion 15, and so that the rack 30 is located before the toothed sleeve 13 when the control rod 3 occupies the first winding position and between the time setting wheel 24 and the toothed sleeve 13, when the control rod 3 occupies the third position of time setting.
- a selector spring 40 secured to two pins 41 which dip into the groove 8 of the element 5 of the control rod 3, so that the selector spring 40 follows the translational movements of the control rod 3.
- the ends 43 of the selector spring 40 are arranged to cooperate with a positioning member 42 which comprises three indexing elements on which the ends 43 can engage. selector spring 40, thereby defining the three positions of the control rod 3.
- All the elements of the mechanism are sized and arranged to be able to contain in the housing 2 and constitute a particularly compact mechanism and module.
- this module 1 is independent of the rest of the watch movement and can be easily removed to be replaced. With reference to FIG. 9, the module 1 is then positioned on the frame, for example the plate 48, at the appropriate place to be able to cooperate with the element or elements of the movement to be actuated.
- the mechanism is in the first position of winding, shown in Figures 3 and 4.
- the control rod 3 In this first position, the control rod 3 is pushed to the bottom of the housing 2 and the control gear 11 is pressed against the winding pinion 15.
- the control pinion 11 does not cooperate with the hour-setting wheel 24 and the toothed sleeve 13 does not cooperate with the rack 30.
- the ends 43 of the selector spring 40 are engaged in the first indexing member of the positioning member 42 to maintain the control rod in its first position.
- the control pinion 11 integral with the control rod 3 rotates by driving the winding pinion 15 through the Breguet gearing 21.
- the toothing 19 of the winding pinion 15 then meshes with 18, which meshes itself with the reference 20 which is kinematically connected to the ratchet fixed on the barrel shaft for reassembly.
- the lug 16 movable in rotation makes it possible to best cooperate with the module 1 with the ratchet and allows disengagement in case of automatic winding, so that the control rod is not rotated. If the control rod 3 is rotated in the opposite direction, the control pinion 11 disengages from the winding pinion 15.
- the selector spring 40 driven by the pins 41 housed in the groove 8 of the control rod, moves in the same manner until its ends 43 engage in the second indexing member of the positioning member 42, thereby defining the second position corresponding to the actuation of a movement mechanism.
- the toothing 33 of the toothed sleeve 13 cooperates with the toothing 32 of the Rack 30.
- the rack 30 and the actuating fingers 34 move in a reciprocating manner perpendicular to the control rod 3 to actuate a suitable mechanism.
- the leaf springs 31 act as return springs. Otherwise, Those skilled in the art will be able to choose a suitable rack, in order to be able to rotate the control rod 3 in a continuous movement instead of a reciprocating movement.
- control pinion 11 does not cooperate with the winding pinion 15 and the toothing 33 of the toothed sleeve 13 has passed through the toothing of the rack 30 so that the control pinion 11 co-operates with the setting wheel. 24.
- the control pinion 11 integral with the control rod 3 rotates by driving the time setting wheel 24 by the edge teeth 22 and 23.
- the toothing 25 the time-setting wheel 24 then meshes with the gear 26 which itself meshes with the gear 27, itself being kinematically connected to display elements, for the correction of the time.
- the positioning member 42 is arranged to allow a return of the mechanism in the first position by pushing the control rod 3 without passing through the second intermediate position.
- the mechanism and the module according to the invention may comprise different combinations of control gears and actuators, as described above.
- a mechanism and its module comprising one or more bushings integral with the control rod arranged to cooperate with different racks each actuating a different element of the movement.
- This mechanism may or may not include the control gear that can cooperate with the winding pinion and / or the wheel of setting the time.
- a winding mechanism and time setting and its module similar to that described above, but comprising only the control pinion can cooperate with the winding pinion and / or the wheel of bet on time.
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Unknown Time Intervals (AREA)
- Transmission Devices (AREA)
- Purses, Travelling Bags, Baskets, Or Suitcases (AREA)
- Toys (AREA)
- Electromechanical Clocks (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP09749752A EP2279460A1 (de) | 2008-05-22 | 2009-05-14 | Uhrmechanismus und modul mit derartigem mechanismus |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP08156728A EP2124112A1 (de) | 2008-05-22 | 2008-05-22 | Uhrmechanismus und diesen Mechanismus umfassendes Modul |
EP09749752A EP2279460A1 (de) | 2008-05-22 | 2009-05-14 | Uhrmechanismus und modul mit derartigem mechanismus |
PCT/EP2009/055821 WO2009141262A1 (fr) | 2008-05-22 | 2009-05-14 | Mecanisme de piece d'horlogerie et module comprenant un tel mecanisme |
Publications (1)
Publication Number | Publication Date |
---|---|
EP2279460A1 true EP2279460A1 (de) | 2011-02-02 |
Family
ID=40239665
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP08156728A Withdrawn EP2124112A1 (de) | 2008-05-22 | 2008-05-22 | Uhrmechanismus und diesen Mechanismus umfassendes Modul |
EP09749752A Withdrawn EP2279460A1 (de) | 2008-05-22 | 2009-05-14 | Uhrmechanismus und modul mit derartigem mechanismus |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP08156728A Withdrawn EP2124112A1 (de) | 2008-05-22 | 2008-05-22 | Uhrmechanismus und diesen Mechanismus umfassendes Modul |
Country Status (6)
Country | Link |
---|---|
US (1) | US8641269B2 (de) |
EP (2) | EP2124112A1 (de) |
JP (1) | JP2011521243A (de) |
CN (1) | CN102027421B (de) |
RU (1) | RU2010143809A (de) |
WO (1) | WO2009141262A1 (de) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2565728B1 (de) | 2011-08-29 | 2018-05-09 | ETA SA Manufacture Horlogère Suisse | Autonomer Steuermechanismus für ein Uhrenteil |
EP2605087B1 (de) * | 2011-12-13 | 2017-07-26 | ETA SA Manufacture Horlogère Suisse | Uhrmoduleinheit mit funktionellen Modulen |
EP2787399B1 (de) * | 2011-12-13 | 2015-07-29 | ETA SA Manufacture Horlogère Suisse | Mechanisches Uhrwerk einer modularen Uhr mit funktionellen Modulen |
EP2701015B1 (de) * | 2012-08-21 | 2018-11-14 | Blancpain SA. | Vorrichtung zur Korrektur der von einer Uhr angezeigten Funktionen |
EP3506025A1 (de) * | 2017-12-27 | 2019-07-03 | ETA SA Manufacture Horlogère Suisse | Steuervorrichtung mindestens einer elektronischen funktion eines tragbaren geräts |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH17991A (fr) | 1898-11-22 | 1899-09-30 | Paul Grosjean Fils | Pont pour montres à remontoir |
CH81927A (fr) | 1919-02-15 | 1919-08-01 | Jules Russbach | Mouvement de montre |
US3837162A (en) * | 1971-08-06 | 1974-09-24 | H Meitinger | Device for adjusting the dial train of watches |
CH989772A4 (de) * | 1972-06-30 | 1974-07-31 | ||
CH609516GA3 (fr) * | 1976-02-19 | 1979-03-15 | Ebauches Electroniques Sa | Piece d'horlogerie. |
JPS594302Y2 (ja) * | 1978-04-19 | 1984-02-07 | セイコーエプソン株式会社 | 時計の切換機構 |
JPS6455478U (de) * | 1987-10-02 | 1989-04-05 | ||
US7134783B2 (en) * | 2001-03-21 | 2006-11-14 | Glashütter Uhrenbetrieb GmbH | Device for adjusting a time indicator |
JP4462606B2 (ja) * | 2004-01-27 | 2010-05-12 | セイコーインスツル株式会社 | 表示修正機構付き時計 |
ATE431581T1 (de) * | 2005-07-26 | 2009-05-15 | Montres Breguet Sa | Vorrichtung mit spindel zum aufziehen und zur zeiteinstellung von uhren |
JP4874066B2 (ja) * | 2006-11-22 | 2012-02-08 | セイコーインスツル株式会社 | 時計 |
CN200972581Y (zh) * | 2006-11-24 | 2007-11-07 | 番禺明珠星钟厂 | 一种手表机芯 |
DE602007010423D1 (de) * | 2007-04-04 | 2010-12-23 | Eta Sa Mft Horlogere Suisse | Zahnrad für Uhrwerk und Vorrichtung zur Korrektur eines Anzeigemechanismus für eine Uhr mit einem solchen Zahnrad |
EP2533110B1 (de) * | 2007-07-02 | 2018-10-24 | Rolex S.A. | Uhr, die mit einer Vorrichtung zur Einstellung von Funktionen und/oder Stundenanzeigen ausgerüstet ist |
-
2008
- 2008-05-22 EP EP08156728A patent/EP2124112A1/de not_active Withdrawn
-
2009
- 2009-05-14 RU RU2010143809/28A patent/RU2010143809A/ru unknown
- 2009-05-14 CN CN200980117176.2A patent/CN102027421B/zh not_active Expired - Fee Related
- 2009-05-14 WO PCT/EP2009/055821 patent/WO2009141262A1/fr active Application Filing
- 2009-05-14 US US12/993,972 patent/US8641269B2/en not_active Expired - Fee Related
- 2009-05-14 EP EP09749752A patent/EP2279460A1/de not_active Withdrawn
- 2009-05-14 JP JP2011509931A patent/JP2011521243A/ja active Pending
Non-Patent Citations (1)
Title |
---|
See references of WO2009141262A1 * |
Also Published As
Publication number | Publication date |
---|---|
CN102027421A (zh) | 2011-04-20 |
WO2009141262A1 (fr) | 2009-11-26 |
CN102027421B (zh) | 2013-01-16 |
RU2010143809A (ru) | 2012-06-27 |
JP2011521243A (ja) | 2011-07-21 |
US8641269B2 (en) | 2014-02-04 |
EP2124112A1 (de) | 2009-11-25 |
US20110110199A1 (en) | 2011-05-12 |
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