Optimized escapement
First Claim
1. An escapement mechanism for a timepiece, comprising:
- a stopper between a resonator and an escape wheel set,wherein said escape wheel set includes at least one magnetized or ferromagnetic, or respectively, electrized or electrostatically conductive track with an angular period of travel over which the magnetic, or respectively, electrostatic characteristics thereof are repeated, said stopper including at least one magnetized or ferromagnetic, or respectively, electrized or electrostatically conductive pole shoe, said pole shoe being movable in a transverse direction relative to the direction of travel of at least one element of a surface of said track, and at least said pole shoe or said track creating a magnetic or electrostatic field in a pole gap between said at least one pole shoe and said at least one surface,wherein said pole shoe is confronted with a magnetic or electrostatic field barrier on said track just before each transverse motion of said stopper actuated by the periodic action of said resonator,wherein said stopper is multistable and arranged to occupy at least two stable positions, andwherein said magnetic or electrostatic field, created by said pole shoe or said track, in a pole gap between said at least one pole shoe and said at least one surface, generates a torque or force which is applied to said at least one pole shoe and said at least one surface, and further wherein said torque or force is a periodic braking torque or force according to said angular period of travel, with, starting from a null value for said torque or force, a first half-period including a ramp of potential wherein said braking torque or force is substantially constant around a first value, and a second part of the period including a barrier of potential wherein said braking torque or force increases and reaches the maximum value thereof which is a second value at least three times said first value and of the same sign as said first value.
1 Assignment
0 Petitions
Accused Products
Abstract
A timepiece escapement mechanism includes a stopper between a resonator and an escape wheel set. The wheel set includes a magnetized track with an angular period of travel over which its magnetic characteristics are repeated. The stopper includes a magnetized or ferromagnetic pole shoe that is mobile in a transverse direction relative to the direction of travel of an element of a surface of the track. The pole shoe or the track creates a magnetic field in a pole gap between the pole shoe and the surface. The pole shoe is opposite a magnetic field barrier on the track just before each transverse motion of the stopper commanded by the periodic action of this resonator. The stopper is multistable and arranged to occupy at least two stable positions.
-
Citations
17 Claims
-
1. An escapement mechanism for a timepiece, comprising:
-
a stopper between a resonator and an escape wheel set, wherein said escape wheel set includes at least one magnetized or ferromagnetic, or respectively, electrized or electrostatically conductive track with an angular period of travel over which the magnetic, or respectively, electrostatic characteristics thereof are repeated, said stopper including at least one magnetized or ferromagnetic, or respectively, electrized or electrostatically conductive pole shoe, said pole shoe being movable in a transverse direction relative to the direction of travel of at least one element of a surface of said track, and at least said pole shoe or said track creating a magnetic or electrostatic field in a pole gap between said at least one pole shoe and said at least one surface, wherein said pole shoe is confronted with a magnetic or electrostatic field barrier on said track just before each transverse motion of said stopper actuated by the periodic action of said resonator, wherein said stopper is multistable and arranged to occupy at least two stable positions, and wherein said magnetic or electrostatic field, created by said pole shoe or said track, in a pole gap between said at least one pole shoe and said at least one surface, generates a torque or force which is applied to said at least one pole shoe and said at least one surface, and further wherein said torque or force is a periodic braking torque or force according to said angular period of travel, with, starting from a null value for said torque or force, a first half-period including a ramp of potential wherein said braking torque or force is substantially constant around a first value, and a second part of the period including a barrier of potential wherein said braking torque or force increases and reaches the maximum value thereof which is a second value at least three times said first value and of the same sign as said first value. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 16, 17)
-
-
9. An escapement mechanism for a timepiece, comprising:
-
a stopper between a resonator and an escape wheel set, wherein said escape wheel set includes at least one magnetized or ferromagnetic, or respectively, electrized or electrostatically conductive track with an angular period of travel over which the magnetic, or respectively, electrostatic characteristics thereof are repeated, said stopper including at least one magnetized or ferromagnetic, or respectively, electrized or electrostatically conductive pole shoe, said pole shoe being movable in a transverse direction relative to the direction of travel of at least one element of a surface of said track, and at least said pole shoe or said track creating a magnetic or electrostatic field in a pole gap between said at least one pole shoe and said at least one surface, wherein said pole shoe is confronted with a magnetic or electrostatic field barrier on said track just before each transverse motion of said stopper actuated by the periodic action of said resonator, wherein said stopper is multistable and arranged to occupy at least two stable positions, wherein said escapement accumulates potential energy received from said wheel set during each half of said period, and returns energy to said resonator between said half-periods during said transverse motion of said stopper actuated by the periodic action of said resonator, wherein said pole shoe changes from a first relative transverse half-travel in relation to said escape wheel set to a second relative transverse half-travel in relation to said escape wheel set, or inversely, and wherein at least said pole shoe or said track creates said magnetic or electrostatic field of a greater intensity in said first half-travel than in said second half-travel during a first half-period, and inversely during a second half-period.
-
-
10. An escapement mechanism for a timepiece, comprising:
-
a stopper between a resonator and an escape wheel set, wherein said escape wheel set includes at least one magnetized or ferromagnetic, or respectively, electrized or electrostatically conductive track with an angular period of travel over which the magnetic, or respectively, electrostatic characteristics thereof are repeated, said stopper including at least one magnetized or ferromagnetic, or respectively, electrized or electrostatically conductive pole shoe, said pole shoe being movable in a transverse direction relative to the direction of travel of at least one element of a surface of said track, and at least said pole shoe or said track creating a magnetic or electrostatic field in a pole gap between said at least one pole shoe and said at least one surface, wherein said pole shoe is confronted with a magnetic or electrostatic field barrier on said track just before each transverse motion of said stopper actuated by the periodic action of said resonator, wherein said stopper is multistable and arranged to occupy at least two stable positions, wherein said escapement accumulates potential energy received from said wheel set during each half of said period, and returns energy to said resonator between said half-periods during said transverse motion of said stopper actuated by the periodic action of said resonator, wherein said pole shoe changes from a first relative transverse half-travel in relation to said escape wheel set to a second relative transverse half-travel in relation to said escape wheel set, or inversely, and wherein said resonator includes at least one oscillator with periodic movement, in that said escape wheel set is powered by an energy source, in that said at least one track is animated with a motion of travel according to a trajectory of travel and includes the physical characteristics reproduced according to said period of travel, and in that said pole shoe is movable in the transverse direction in relation to the direction of travel of said track on a transverse trajectory substantially orthogonal to said trajectory of travel and effecting said first half-travel on a first side of a fixed median position and said second half-travel on a second side of said median position, and wherein, in said pole gap, said track and/or said pole shoe creates said magnetic or electrostatic field whose intensity is greater in said first half-travel than in said second half-travel during the first half of said period of travel, and whose intensity is greater in said second half-travel than in said first half-travel during the second half of said period of travel, and in that said escapement mechanism accumulates the potential energy transmitted from said energy source via said escape wheel set during each said first half or second half of said period of travel, and in that said escapement mechanism returns said energy to said oscillator during said transverse motion of said stopper actuated by said resonator between said first half and said second half of said period of travel, during said transverse motion said pole shoe changes from said first half-travel to said second half-travel or inversely under the effect of the periodic action of said oscillator on said stopper, said pole shoe being then opposite said magnetic or electrostatic field barrier on the part of said track opposite to which said pole shoes moves just before said transverse motion.
-
-
11. An escapement mechanism for a timepiece, comprising:
-
a stopper between a resonator and an escape wheel set, wherein said escape wheel set includes at least one magnetized or ferromagnetic, or respectively, electrized or electrostatically conductive track with an angular period of travel over which the magnetic, or respectively, electrostatic characteristics thereof are repeated, said stopper including at least one magnetized or ferromagnetic, or respectively, electrized or electrostatically conductive pole shoe, said pole shoe being movable in a transverse direction relative to the direction of travel of at least one element of a surface of said track, and at least said pole shoe or said track creating a magnetic or electrostatic field in a pole gap between said at least one pole shoe and said at least one surface, wherein said pole shoe is confronted with a magnetic or electrostatic field barrier on said track just before each transverse motion of said stopper actuated by the periodic action of said resonator, wherein said stopper is multistable and arranged to occupy at least two stable positions, and wherein said escape wheel set includes, on one of the two lateral surfaces thereof, a plurality of secondary tracks concentric to one another in relation to an axial direction which is orthogonal both to a transverse direction substantially parallel to the transverse trajectory of said pole shoe, and to the direction of travel of said track, each said secondary track including one angular series of elementary primary areas, each said primary area exhibiting a magnetic, or respectively electrostatic behaviour which is different, on the one hand, from that of each adjacent primary area on said secondary track to which said primary area belongs, and on the other hand, from that of each other primary area which is adjacent thereto and which is situated on another said secondary track adjacent to its the track of said area. - View Dependent Claims (12, 13, 14, 15)
-
Specification