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1. (WO2018002773) TIMEPIECE ESCAPEMENT

Pub. No.:    WO/2018/002773    International Application No.:    PCT/IB2017/053668
Publication Date: Fri Jan 05 00:59:59 CET 2018 International Filing Date: Wed Jun 21 01:59:59 CEST 2017
IPC: G04B 17/04
G04B 15/14
Applicants: PATEK PHILIPPE SA GENEVE
Inventors: OES, Stéphane
Title: TIMEPIECE ESCAPEMENT
Abstract:
The invention relates to a timepiece escapement comprising a bistable elastic member (2), a winding lever (3) arranged to wind the bistable elastic member (2) during winding phases, and a detent lever (4) arranged to be driven by a detent of said bistable elastic member (2) after each winding phase, in order to transmit an impulse to a regulator. The present timepiece escapement comprises a single escapement wheel (1) for driving the winding lever (3) during the winding phases. Said escapement wheel (1) comprises a winding member (6) arranged to engage with winding elements (11, 12) of said winding lever (3) in a meshing manner such that the winding lever (3) is made to pivot alternately in opposite directions.