Patent US2289207A successfully refreshed from Google Patents.
Patent US3901019A successfully refreshed from Google Patents.
US3901019A
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US
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Watch movement
Assignee: SSIH Management Services SA
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Filing: 1974-06-28
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Granted: 1975-08-26
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Expires: 1994-06-28
Abstract
Abstract A watch movement comprises a barrel holding a mainspring, a third wheel, and a center seconds wheel. The barrel directly drives the third wheel which in turn directly drives the center seconds wheel thereby eliminating the use of a center wheel. An automatic winding mechanism is provided, the winding mechanism comprising a rotor and a single reduction gear interposed between a pinion mounted on the rotor and a ratchet on the barrel.
Inventors
- 👤 Hans Kocher
- 👤 Werner Haenzi
- 👤 Erwin Muff
- 👤 Claude-Andre Gygaz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 09:28
CPC Classifications
G; G04; G04B; G04B13/00; G04B5/00; G04B5/02; G04B5/10; G04B5/12
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
42 words
A watch movement comprising a barrel holding a mainspring, a third wheel and a center seconds wheel, wherein the barrel directly drives the third wheel which in turn directly drives the center seconds wheel thereby eliminating the use of a center wheel.
Claim 2
Dependent Claim
42 words
A watch movement comprising a barrel holding a mainspring, a third wheel and a center seconds wheel, wherein the barrel directly drives the third wheel which in turn directly drives the center seconds wheel thereby eliminating the use of a center wheel.
Claim 3
Dependent Claim
36 words
A watch movement as in claim 1 including an automatic winding mechanism, said mechanism comprising a rotor and a single reduction gear interposed between a pinion mounted on said rotor and a ratchet on the barrel.
Claim 4
Dependent Claim
18 words
A watch movement as in claim 1 wherein portions of the mechanism are made from injected plastic materials.
Claim 5
Dependent Claim
38 words
A watch movement as in claim 1 wherein the gear ratios are chosen such that with use of a balance wheel having a frequency of 21,600 beats per hour, the barrel will make one revolution in 2.4 hours.
Claim 6
Dependent Claim
18 words
A watch movement as in claim 3 wherein portions of the mechanism are mAde from injected plastic materials.
References Cited (Backward Citations)
US2981055A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-08-25 | 1979-02-24 | 1979-08-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-08-25 | 1983-02-24 | 1983-08-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-08-25 | 1987-02-24 | 1987-08-26 | $7700.00 | Window Closed / Lapsed |