Eta Sa Manufacture Horlogere Suisse

Eta Sa Fabriques D'ebauches

Marco Bettelini

David Benjamin Kraehenbuehl

Roger Willemin

Julien Chaignat

Roger Metzger

Marc Kuepfer

Ivan Villar

Friedrich Perrot

Gaston Gagnebin

Thierry Altenhoven

Daniel Gruenig

Philipp Gaechter

Andre Nussbaum

Roger Mueller

Bjorn Kjelsberg

Raphael Loeffel

Theodor Schoenenberger

Ines Ruestenberg

Francois Nikles

Jonathan Collaud

Daniel Grünig

Raphaël Loeffel

André Nussbaum

Roger MÜLLER

Marc Küpfer

A timepiece including a case that houses a main plate of a movement surmounted by a dial, and a support including fastening studs arranged on an upper face of the main plate for mounting the dial. The dial and the support include an angular locking mechanism for locking an angular position of the dial on the support, and the dial is assembled to the main plate by at least one flexible fastening element integral with the dial and arranged in the plane of the dial.

Timepiece provided with a dial and associated fastening method

Wristwatch including a case in or on which there is arranged a first open housing, a wristlet provided with one end arranged in the first open housing, and a fastening means for holding the end of the wristlet in the first housing. The fastening means includes a second housing opening onto the first housing and a fastening element arranged in the second housing and occupying one part of the first housing. The wristwatch further contains a means of retaining the fastening element.

System for attaching a wristlet strand to a case

A timepiece including a case that accommodates a movement including a lower peripheral bearing surface, the case including a case middle to which a back cover and a crystal are respectively assembled. The timepiece further includes a clamping element including a lower retaining surface and the movement includes an upper peripheral bearing surface, the lower retaining surface of the clamping element and the upper peripheral bearing surface being in mutual contact. The back cover includes an annular peripheral shoulder, against which is affixed the lower peripheral bearing surface of the movement, which is compressed between its lower peripheral bearing surface and its upper peripheral bearing surface respectively by the annular peripheral shoulder of the back cover and the lower retaining surface of the clamping element.

Device and method for fixing a movement inside a case

Autonomous control mechanism () for a movement, comprising a control stem () moveable relative to a bar () between stable stem positions, for controlling the pivoting, in each of said positions, of a single control train of the control trains of said mechanism (). It includes, on a first side () of said bar (), a first control train (), and on a second side () opposite said bar (), a second control train (). Every stable position of the control stem () drives a stable position of a pull-out piece () fitted to one of said sides and moveable relative to a boss () of said bar (). In said stable pull-out piece position, any movement applied to the control stem () causes the pivoting movement, of either a single first control train (), or a single second control train ().

Autonomous control mechanism for a timepiece

An electronic timepiece movement including a timepiece motor formed by an assembly comprising a frame made of non-magnetic material and a rotor housed in said frame; and method of manufacturing a motor of this type wherein the frame is first made with a lateral aperture, said frame including a first part and a second part each carrying a bearing, the first part or the first and second parts of the frame being elastically deformable. Next, the rotor is mounted in the frame through the lateral aperture therein by increasing the distance between the two bearings of the frame via the elastic deformation of the first part or of the first and second parts of said frame, said elastic deformation being provided in particular for the insertion of the two rotor pivots into the two respective bearings of the pre-formed frame.

Electromagnetic timepiece motor and method of manufacturing the same

A timepiece movement including a time-setting stem which is moveable longitudinally and in rotation along a stem axis in a bottom plate, the movement including at least one display control mechanism which includes at least one counter, an arbour of which pivots about a pivot axis. The axis is secant with the stem axis, and pivots in a first jewel, a first external shoulder of which is driven into the bottom plate, and a second external shoulder of which pivotally guides the bore of an intermediate time-setting wheel controllable via the stem.

Timepiece display mechanism

A correction device for a timepiece display mechanism, which includes a display member fitted with a toothing of pitch P, includes a pinion provided with a toothing of pitch p, mounted on a winding stem so as to occupy at least one display correcting position A, and a correction wheel mounted between the pinion and the display member. The correction wheel includes a first toothing defined by pitch P, a head diameter D, and a foot diameter d, formed of teeth including a tip extending substantially angularly, and the tip is cut so as to form a second discontinuous toothing that is coplanar and concentric to the first toothing, defined by pitch p less than the pitch P of the first toothing, a head diameter D equal to the head diameter of the first toothing, and a foot diameter dgreater than the foot diameter dof the first toothing.

Correction device for timepiece display mechanism and wheel fitted thereto

A single direction coupling device, including a first transmission member () fitted with a first saw-like contrate toothing (), mobile in rotation about an axis XX and axially positioned by an elastic member (), and a second transmission member () fitted with a second saw-like toothing (), mobile in rotation about an axis YY, meshed with the first transmission member (), characterized in that the XX axis is perpendicular to the YY axis.

Single direction coupling device and correction device including the same

The invention is a timepiece calendar mechanism for displaying the date and the day of the week, including a date indicator in the form of an internally toothed crown. The date indicator is driven by a first drive wheel having an external toothing so as to be able to be driven about an axis of rotation by a wheel set secured to an hour wheel of the timepiece. The toothing includes a prominent tooth, longer than the others, which abuts against a tooth of the inner toothing of the date indicator to move it forward one day in a time interval located around a determined time of the day. The mechanism also includes a day of the week indicator that moves forward one day during the time interval.

Calendar mechanism for displaying the date and the day of the week in one timepiece

Date mechanism for a timepiece such as a wristwatch including two superposed respectively lower () and upper () date rings, whose surface is divided into a plurality of sectors, the upper ring () including sixteen sectors, fifteen of which respectively bear fifteen successive markings of a cycle of 31 positions, and the sixteenth of which is an extra sector having an open or transparent aperture (), whereas the lower ring () includes seventeen sectors, sixteen of which bear respectively the other sixteen markings of the cycle of 31 positions, and the seventeenth of which is an extra sector, each of said rings cooperating with drive means such that the markings appear successively in a display zone () the date mechanism further including a jumper-effect stopping device () able to stop each ring () in any desired position, the date mechanism being characterised in that one location on the upper ring () and one location on the lower ring () is provided with a thinned tooth () and (), located between two successive teeth () or () of the toothing of the ring () or () concerned, the position of the drive means with respect to the toothing of the rings () being such that when a ring () or () has its extra sector at the location of the display zone (), the thinned tooth () or () is located opposite the drive means such that said drive means only drive the other ring, the thinned teeth () not disturbing the movement of the drive means and allowing the stopping device () to be constantly housed between two successive teeth () or () of each of the rings ().

Timepiece with a date mechanism comprising two superposed date rings

Date mechanism for a timepiece such as a wristwatch including two superposed respectively upper () and lower () date rings, whose surface is divided into a plurality of sectors, the upper ring () including sixteen sectors, fifteen of which respectively bear fifteen successive markings of a cycle of 31 positions, and the sixteenth of which is an extra sector having an open or transparent aperture (), whereas the lower ring () includes seventeen sectors, sixteen of which bear respectively the other sixteen markings of the cycle of 31 positions, and the seventeenth of which is an extra sector, each of said rings () cooperating with drive means such that the markings of the lower ring appear successively in a display zone (), the date mechanism being wherein each ring () includes two peripheral toothings extending along two stepped, respectively upper and lower rows, the teeth () of the upper and lower rows of the upper ring () being superposed, whereas the teeth () of the upper and lower rows of the lower ring () are staggered, one location () of each of the toothings of the upper () and lower () rings being tooth free, and in that said date mechanism further includes a correction device, the position of the drive means with respect to the upper and lower toothings of the respectively upper () and lower () rings, and the position of the correction mechanism with respect to the lower and upper toothings of the respectively upper () and lower () rings being such that when the upper ring () has its extra sector at the location of said display zone (), the drive means and the correction device are located respectively opposite the tooth free location () of the toothing of the upper row and that of the lower row of the upper ring, and vice versa.

The invention concerns the structure of a timepiece movement, more particularly the structure of the hour wheel ( ), the inside of whose pipe ( ) includes an annular bulge ( ) co-operating with an annular groove ( ) arranged on the outer wall of the pipe ( ) of the cannon-pinion ( ). Thus, the hour wheel is snap-fitted onto the movement, without it being necessary to provide an additional part for this purpose, and its toothed wheel ( ) cannot therefore be released from the motion-work pinion ( ) during transport of the movement.

Timepiece movement

The gear train (,) connecting the driving element (,) to the minute wheel (,) includes a wheel and pinion (,) able to be disconnected from this train to interrupt the movement and stop the hour (,) and minute (,) display when the time-setting stem (,) is actuated while in a pulled out position (,). The disconnectable wheel and pinion (,) then undergoes a movement of translation which removes it from the other wheels and pinions (,) of the train (,), the axes about which all the wheel and pinions rotate remaining substantially parallel to each other.

Disconnecting-gear device for a timepiece gear train

The time-setting device includes a stem (8) capable of driving by friction a motion work wheel (29). The stem (8) ends in a knob (31) which rests against an annular flange (32) made under the motion work wheel. When the stem (8) is in a pushed in position, the knob runs idle. When this stem is pulled out, the knob drives the motion work to set the time of the hour (23) and minute (22) hands.

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Preles, Switzerland

Marco Bettelini