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US 7,293,911 B2Granted
Timekeeper with a mechanism for measuring settable predetermined periods
AssigneeRolex SA
InventorsNicolas Bonvin, Adrien Frederic Farron, Denis Rudaz
Life of this patent
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AssigneeRolex SA
InventorsNicolas Bonvin, Adrien Frederic Farron, Denis Rudaz
Estimating the term…
This timekeeper comprises a first timer (4), means (12) for connecting it selectively to the train of the timekeeper (T), a second timer (5), a synchronous coupling between the first (4) and second (5) timers, and fly-back means (13, 13′, 9, 11) for said timers (4, 5). An auxiliary motive source (10′) is in a driving relationship with the second timer (5) and a one-way coupling (6a, 7a) is situated between the first (4) and second (5) timers to regulate the speed of movement of the latter at a predetermined ratio with the speed of movement of the first timer (4) while allowing one-way relative movement of the first timer (4) relative to the second (5) when the latter is in the stop position and one-way relative movement in the opposite sense of the second timer (5) when the first timer (4) is in the stop position.
A timekeeper with a mechanism for measuring settable predetermined periods, comprising a first time, means for connecting it selectively to the train of the timekeeper, a second timer, a synchronous coupling between the first and second timers, and fly-back means for said timers, wherein an auxiliary motive source is in a driving relationship with the second timer and a one-way coupling is situated between the first and second timers to regulate the speed of movement of the latter at a predetermined ratio with the speed of movement of the first timer while allowing one-way relative movement of the first timer with respect to the second when the latter is in the stop position and one-way relative movement of the second timer in the opposite sense when the first timer is in the stop position.
Dependencies are inferred from the claim text.