Flexible escape mechanism with no pallet lever
AssigneeNivarox-FAR S.A.
InventorsMarc Stranczl, Thierry Hessler, Andres Cabezas Jurin, Davide Sarchi
Life of this patent
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Abstract
An escape mechanism including a flexible single-piece mechanism for transmission of impulses between an impulse pin of a balance, and teeth of an escape wheel. Each tooth includes a lever with a pin that can be actuated by a lifting piece, a low level of the wheel carrying the pins on a same level as stop members of a plate, and a high level carrying the lifting pieces. The impulse pin pivots a lever opposite thereto, either to cause the pin to cooperate in abutment with the second stop member, or to move the lifting piece thereof opposite the first stop member and to cause the pin to bypass the second stop member, allowing the wheel to rotate to a next tooth.
Claims6
An escape mechanism comprising:
- a plate;
- a balance;
- and
- an escape wheel including flexible levers for transmission of impulses between an impulse pin of the balance, and teeth of the escape wheel;
- wherein the escape mechanism is an escape mechanism with no pallet lever, and each tooth includes a flexible lever of the flexible levers, the flexible lever including a lifting piece to actuate a lever pin guided by first flexible strips,
- a low level of the wheel carrying the lever pins on a same level as a first stop member and a second stop member, comprised in said plate and said lever pins being arranged for cooperating with said first stop members and said second stop members, and a high level of the wheel carrying the lifting pieces, and
- the impulse pin being arranged to pivot the flexible lever that faces the impulse pin, in a first pivoting direction of the balance to cause the lever pin to cooperate in abutment with the second stop member by stopping the escape wheel, or in a second pivoting direction of the balance opposite to the first pivoting direction to move the lifting piece of the flexible lever opposite the first stop member and to cause the lever pin to bypass the second stop member allowing the wheel to rotate to a next tooth.
Dependencies are inferred from the claim text.