DEVICE FOR FASTENING A BACK ON A MIDDLE FOR A TIMEPIECE

A device is for fastening a back on a middle of a watch. The back includes a cover arranged to form a bearing surface with the middle and a body arranged to rest in the middle. The device includes a ring disposed between the back and the middle, the ring being arranged to ensure the water resistance...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	GARCIN, Simon, ALLIMANN, Joël, MARTIN, Jean-Claude
Format:	Patent
Sprache:	eng
Schlagworte:	HOROLOGY MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL MECHANICALLY-DRIVEN CLOCKS OR WATCHES PHYSICS TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
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Beschreibung
Zusammenfassung:	A device is for fastening a back on a middle of a watch. The back includes a cover arranged to form a bearing surface with the middle and a body arranged to rest in the middle. The device includes a ring disposed between the back and the middle, the ring being arranged to ensure the water resistance and indexing of the back. The ring includes an upper part ensuring the water resistance and a median part including positioning to ensure precise placement of the back.