US3636700A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Watch with stopwatch hand
Assignee: DUROWE GmbH
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Filing: 1970-06-10
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Granted: 1972-01-25
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Expires: 1990-06-10
Abstract
Abstract This invention covers a watch which has a normally synchronized stopwatch hand and which is improved in that the transmission ratio between the minute hand and the stopwatch hand can be easily changed. The stopwatch hand may consist of a disk, a second hand may be provided which is coaxial with the minute hand, a self-winding mechanism may be incorporated in the watch, these improvements being made possible without requiring an increase in the thickness of the watch movement. The stopwatch hand is thus normally arranged to rotate in synchronism with the minute arbor and stopwatch hand setting means are mounted in the mounting structure and operable to rotate the stopwatch hand to a zero position and to hold it there until the hand is to be released.
Inventors
- 👤 Ewald Stemmler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 07:54
CPC Classifications
G; G04; G04F; G04F7/00; G04F7/04; G04F7/08; G04F7/0866; G04F7/089
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
287 words
A watch mechanism, which comprises a mounting structure including a baseplate, a barrel rotatably mounted in said mounting structure on an axis and having an external circular series of teeth, a minute arbor extending through said baseplate and rotatably mounted in said mounting structure on an axis offset from the axis of said barrel, first gear means operatively connecting said circular series of teeth to said minute arbor, a stopwatch hand rotatably mounted in said mounting structure, idler gear means operatively connecting said circular series of teeth to said stopwatch hand and comprising an idler shaft which extends through said baseplate and is rotatably mounted in said mounting structure on an axis which is offset from the axes of said barrel and said minute arbor, a first idler gear mounted on said idler shaft and in mesh with said circular series of teeth, a second idler gear rotatably mounted on said idler shaft and operatively connected to said stopwatch hand, and a slip coupling connecting said idler shaft and one of said idler gears for joint rotation, whereas the other of said idler gears is connected to said idler shaft to rotate therewith, whereby said stopwatch hand is arranged normally to rotate in synchronism with said minute arbor, and stopwatch hand-setting means which are mounted in said mounting structure and arbitrarily operable to rotate said stopwatch hand to a zero position and to hold it there until said stopwatch hand is to be released, said barrel and first gear means and said first idler gear being disposed on one side of said baseplate, said stopwatch hand, said second idler gear, said slip coupling and said stopwatch hand-setting means being disposed on the other side of said baseplate.
Claim 2
Dependent Claim
287 words
A watch mechanism, which comprises a mounting structure including a baseplate, a barrel rotatably mounted in said mounting structure on an axis and having an external circular series of teeth, a minute arbor extending through said baseplate and rotatably mounted in said mounting structure on an axis offset from the axis of said barrel, first gear means operatively connecting said circular series of teeth to said minute arbor, a stopwatch hand rotatably mounted in said mounting structure, idler gear means operatively connecting said circular series of teeth to said stopwatch hand and comprising an idler shaft which extends through said baseplate and is rotatably mounted in said mounting structure on an axis which is offset from the axes of said barrel and said minute arbor, a first idler gear mounted on said idler shaft and in mesh with said circular series of teeth, a second idler gear rotatably mounted on said idler shaft and operatively connected to said stopwatch hand, and a slip coupling connecting said idler shaft and one of said idler gears for joint rotation, whereas the other of said idler gears is connected to said idler shaft to rotate therewith, whereby said stopwatch hand is arranged normally to rotate in synchronism with said minute arbor, and stopwatch hand-setting means which are mounted in said mounting structure and arbitrarily operable to rotate said stopwatch hand to a zero position and to hold it there until said stopwatch hand is to be released, said barrel and first gear means and said first idler gear being disposed on one side of said baseplate, said stopwatch hand, said second idler gear, said slip coupling and said stopwatch hand-setting means being disposed on the other side of said baseplate.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-01-24 | 1975-07-26 | 1976-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-24 | 1979-07-26 | 1980-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-24 | 1983-07-26 | 1984-01-25 | $7700.00 | Window Closed / Lapsed |