Patent ID: 8757869
Filing Date: 2014-06-24
Classification: G04B

Abstract:
1. A timepiece escapement having an escapement wheel ( 1 ) and an anchor ( 2 ), the anchor ( 2 ) comprising an entry pallet ( 6 ) and an exit pallet ( 7 ) cooperating with teeth ( 8 ) on the escapement wheel ( 1 ), each of the entry and exit pallets ( 6 , 7 ) having a back side ( 9 ), an impulse beak ( 10 ), an impulse face ( 11 ) and a lock face ( 12 ), the anchor ( 2 ) and/or the escapement wheel ( 1 ) comprising means ( 17 , 18 ) for limiting the oscillations of the anchor ( 2 ) during normal operation of the escapement to a range of displacement defined by an entry lock position where the entry pallet ( 6 ) blocks the escapement wheel ( 1 ) and by an exit lock position where the exit pallet ( 7 ) blocks the escapement wheel ( 1 ), wherein the escapement wheel ( 1 ) comprises, at a periphery, protrusions ( 20 , 21 , 22 ) arranged so that: upon an impact having the effect of causing the anchor ( and/or so that upon an impact having the effect of causing the anchor (