Detent escapement for a timepiece

A detent escapement provided to regulate an operation of a timepiece movement, said detent escapement comprising an escape wheel provided with a plurality of teeth regularly spaced along a perimeter and a balance, the balance being equipped with an impulse pallet with which said balance receives driving impulses via the teeth of the escape wheel, the balance being moved by an oscillating movement during which the balance performs, for each oscillation, an alternation during which the balance receives a driving impulse and an alternation without the driving impulse, the detent escapement also comprising a hook pivotally mounted on the balance and held bearing by an elastic member against an abutment, the detent escapement being completed by a detent which is configured to pivot and which comprises a first arm which collaborates with the escape wheel to ensure blocking the escape wheel just before a start of the driving impulse, as well as a second arm which collaborates with the hook of the balance to allow the escape wheel to disengage from an engagement of the escape wheel with the first arm at the start of the driving impulse, and which limits the pivoting of said detent to only part of the oscillation of the balance, the detent also being arranged so that, by cooperation with the escape wheel, a return of the detent to a position wherein the detent again blocks the escape wheel after the escape wheel has finished providing the driving impulse to the balance is assisted by said escape wheel, the detent escapement comprising a pulling device which opposes a resistance to the disengagement of the escape wheel during shocks applied to a horological movement when the escape wheel is in a rest position on the detent.