Assembly element including two series of elastic structures and timepiece fitted with the same

US7575369B2 · kind B2 · utility

Assignee

• ETA SA MANUFACTURE HORLOGÈRE SUISSE · CH

Inventors

• Roland Bitterli · Moutier, CH
• Wilfried Noell · Neuchâtel, CH
• Fabien Blondeau · Glarus, CH
• Lionel Paratte · Marin-Epagnier, CH
• Toralf Scharf · Moutier, CH
• Pierre-Andre Meister · Bienne, CH
• André Zanetta · Moutier, CH

Key dates

• Filing date: Nov 9, 2007
• Grant date: Aug 18, 2009
• Expiry date: Nov 9, 2027

Classification

• Technology area (CPC G): Physics
• CPC primary: G04D3/0046
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

Assembly element (18) made in a plate of brittle material, including an aperture (32) provided for the axial insertion of an arbour (26). The inner wall (33) of the aperture (32) includes elastic structures (34), which are etched into the plate and which each include at least one support surface (36) for gripping the arbour (26) radially in order to secure the assembly element (18) relative to the arbour (26). The assembly element (18) includes a first series (S1) of elastic structures (34) etched in a top layer (39) of the plate and a second series (S2) of elastic structures (34) etched in a bottom layer (41) of the plate.A timepiece may be fitted with this assembly element.