Patent ID: 8480293
Filing Date: 2013-07-09
Classification: G04B

Abstract:
1. A timepiece furnished with a direct impulse escapement comprising a frame on which are pivotingly mounted an escapement wheel, a locking lever for locking the escapement wheel furnished with two locking pallets, with a fork and with a guard pin, a spiral-balance oscillator furnished with a double roller supporting an impulse pallet, a disengagement pin and a detent for allowing the guard pin to pass; the impulse pallet being positioned in order to intersect the trajectory of the teeth of the escapement wheel, the disengagement pin being positioned in order to engage with the fork on each half-period of oscillation of the balance in order to release the locking lever in order to allow the locking lever to tilt between two positions for locking the teeth of the escapement wheel and allow force to be transmitted from a tooth of the escapement wheel to the impulse pallet on each period of oscillation of the balance, wherein the guard pin is mounted so as to pivot on the fork about an axis parallel to the pivoting axis of the locking lever and wherein the guard pin comprises displacement means, designed to engage with drive means secured to said frame, so as to amplify the angular displacement of the guard pin caused by the locking lever passing from one to the other of the two positions for locking the teeth of the escapement wheel.