Patent ID: 11860576
Assignee: FRANçOIS BESSE
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 0:
1. A direct escapement mechanism (1) for a timepiece, comprising:
an escape wheel (2), rotatable about a first axis of rotation (X1) and provided with a series of peripheral teeth (3), each having a locking plane (3p), said teeth (3) defining by their ends during rotation of the escape wheel a circular trajectory C, and
an anchor (4), rotatable around a second axis of rotation (X3) between two end locking positions delimited by pins (7, 8), said anchor having an entry-pallet (10) and an exit-pallet (11), each having a locking plane (10p, 11p) and arranged on the anchor in such a way that each pallet cooperates into abutment on its locking plane (10p, 11p) with the locking plane (3p) of a tooth (3) of the escape wheel in each of said locking positions, said anchor (4) further having a fork (43), and
at least a further pin (6) which can be rigidly connected to a regulating organ (5) pivoting around a third axis of rotation (X2) to cooperate at each alternation of said regulating organ (5) with the fork (43) of the anchor in order to unlock at least partially said anchor from the escape wheel (2),
at least one impulse pallet (9) capable of being rigidly connected to said regulating organ (5) to cooperate with a tooth (3) of the escape wheel to transmit a direct impulse to said regulating organ (5);
wherein at least each tooth (3) of the escape wheel or at least one of the entry-pallets or exit-pallets (11) comprises in the extension of said locking plane (3p, 10p, 11p) an inclined plane (3i, 10i, 11i) having ends which delimit a micro-impulse angle β comprised between 0.5° and 5°, said angle β being considered in relation to said axis of rotation (X3) of the anchor (4), said inclined plane (3p, 10i, 11i) being arranged to provide an indirect impulse to said regulating organ (5) during a movement of said pallet in the path C of the escape wheel (2) by rotating the anchor (4) on its axis (X3).