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US 6,942,378 B2Granted
Detent escapement for timepiece
AssigneeMontres Breguet S.A.
InventorsNicolas Georges Hayek, Thierry Conus, Andréas Cabezas Jurin
Life of this patent
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AssigneeMontres Breguet S.A.
InventorsNicolas Georges Hayek, Thierry Conus, Andréas Cabezas Jurin
Estimating the term…
The detent escapement includes a wheel 2 fitted with teeth 3, a roller 4 fitted with an impulse pallet stone 5, a blocking member in the form of a lever 6 hinged on a pin 8. The first and second arms 9 and 10 of the lever respectively carry a locking pallet stone 7 and a first actuating finger 11. An elastic member 12 is mounted on the roller 4, said member carrying a second actuating finger 14 capable of driving the first finger 11 when the roller 4 rotates in a first direction a to actuate the blocking member 6 and to move around said first finger 11 without driving it, when the roller 4 rotates in a second direction b opposite to the first. The elastic member 12 is a spring of great length including a plurality of turns 15 wounded about a centre 16.
A detent escapement for a timepiece including an escapement wheel fitted with teeth, a roller secured to a balance, said roller being fitted with an impulse pallet stone, a blocking member in the form of a lever hinged on a pin, the first and second arms of said lever respectively carrying a locking pallet stone and a first actuating finger, and an elastic member mounted on the roller and carrying a second actuating finger capable of driving the first finger when the roller rotates in a first direction to actuate the blocking member and to move around said first finger without driving it, when the roller rotates in a second direction opposite to the first, wherein the elastic member is a spring including a plurality of turns wounded about a centre.
A detent escapement for a timepiece including an escapement wheel fitted with teeth, a roller secured to a balance, said roller being fitted with an impulse pallet stone and a first finger, a blocking member in the form of a lever hinged on a pin, a first arm of said lever carrying a locking pallet stone, said lever including an elastic member carrying a second actuating finger capable of being driven by the first finger when the roller rotates in a first direction to actuate the blocking member, and to move around said first finger without driving it when the roller rotates in a second direction opposite to the first, wherein the elastic member is a serpentine spring.
A detent escapement for a timepiece including an escapement wheel fitted with teeth, a roller secured to a balance, said roller being fitted with an impulse pallet stone and a first finger, a blocking member in the form of a lever hinged on a pin, a first arm of said lever carrying a locking pallet stone, said lever including an elastic member carrying a second actuating finger capable of being driven by the first finger when the roller rotates in a first direction, and to move around said finger without being driven when the roller rotates in a second direction opposite to the first, wherein the elastic member is a spiral spring.
Dependencies are inferred from the claim text.