Curved paddle anchor for swiss anchor escapement mechanism

The curved pallet design in the anchor for the Swiss lever escapement mechanism addresses efficiency and collision issues by increasing safety distance and reducing pallet thickness, improving the escapement mechanism's performance.

EP4764715A1Pending Publication Date: 2026-06-24ETA SA MFG HORLOGERE SUISSE
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Patent Information

Application Number
EP2025171020
Authority / Receiving Office
EP · EP
Patent Type
Applications
Current Assignee / Owner
Priority Date
2024-12-20
Filing Date
2025-04-16
Publication Date
2026-06-24

AI Technical Summary

Technical Problem

Existing escapement mechanisms in mechanical watches face challenges in achieving efficient operation while maintaining a sufficient safety distance between the pallets and the teeth of the escape wheel, leading to reduced efficiency and potential collisions, particularly with the use of flexible-guided balance wheels and in-line or triangular arrangements.

Method used

The design of an anchor for a Swiss lever escapement mechanism with curved side walls on the pallets, allowing for increased safety distance and improved efficiency by reducing the thickness of the pallets in critical areas, and utilizing silicon material for enhanced curvature and flexibility.

Benefits of technology

The curved pallet design ensures a safer and more efficient operation of the escapement mechanism, maintaining optimal interaction with the balance wheel and escape wheel while reducing the risk of collisions and enhancing the overall mechanism's performance.

✦ Generated by Eureka AI based on patent content.

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Abstract

The invention relates to an anchor (21) for a Swiss lever escapement mechanism (50), the anchor (21) comprising a fork (22) intended to cooperate with an ellipse (23) of a balance wheel (35), an inlet arm (11) and an outlet arm (12) intended to cooperate with an escapement wheel (30), the inlet arm (11) and the outlet arm (12) each comprising a pallet (25, 26), the pallet (25) of the inlet arm (11) and / or the pallet (26) of the outlet arm (12) comprising a side wall (27, 28) located on the side opposite the resting plane, the side wall (27, 28) being provided with a portion curved (29, 33) towards the inside of the pallet (25, 26).
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Citation Information

Patent Citations

  • Timepiece resonator with crossed blades

    EP3035126B1

  • Timepiece resonator mechanism

    EP3206089A1

  • escapement for a timepiece mechanism, in particular for a watch and watch movement mechanism

    CH1661869A4

  • Anchor escapement

    EP3001256B2

  • Escapement for a timepiece with optimized torque transmission

    US11480923B2