Eta Sa Manufacture Horlogere Suisse

Synthes Gmbh

Roger Metzger

Marco Bettelini

Roger Willemin

The invention relates to a device for supplying electrical energy to an electro-pen with an electric drive unit for driving a tool. The device comprises a console with an energy supply unit having an accumulator for supplying the electrical drive unit with electrical energy. The console may be configure to be sterilized by steam having a housing and electrical components that are sealed liquid-tight. The accumulator may include a sterile covering for sterile introduction into the console. A coupling between the console and the electro-pen carries the supply of electrical energy from the console to the electro-pen. The coupling may be an electrical contact in the form of a sterilizable connector or an inductive coupling. The console may be configured to store energy and is thus mobile, or the console may include a connection for connecting to a mains or external power supply for charging the accumulator. The console may include a switch-mode power supply for charging the accumulator. The console may include a holder for receiving and charging the electro-pen. The electro-pen includes an electrical storage device and a coupling for receiving the electrical energy supply from the accumulator. The holder may include an electrical coupling between the console and the electro-pen in which at least two electrical contacts and at least one transformer are disposed about each the holder and the electro-pen. Alternatively, the holder may include an inductive coupling in which at least one transformer having at least one coil is disposed about each the holder and the electro-pen.

Device for supplying an electro-pen with electrical energy

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.

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Aarau, Switzerland

Roger Metzger