US3695035A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Timepiece movement
Assignee: Omega Louis Brandt and Frere SA
•
Filing: 1970-09-22
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Granted: 1972-10-03
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Expires: 1990-09-22
Abstract
Abstract A timepiece movement for driving a plurality of hands, one of which is an hour hand, includes a power train and a pair of identical, coaxially mounted independently rotatable gears operatively connected with the hour hand, one of said gears being driven by said power train and the other of said gears being selectively operated manually, and magnetic means normally coupling said gears for simultaneous rotation but permitting adjustment of said one gear relative to the other to change the indication of said hour hand without affecting any other hand, whereupon following such adjustment said magnetic means effects coincidence of said gears to accurately position the hour hand.
Inventors
- 👤 Willy Cleusix
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 14:09
CPC Classifications
G; G04; G04B; G04B27/00; G04B27/005; G04B19/00; G04B19/22; G04B19/221; G04B27/001
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
87 words
A timepiece movement comprising a timer gear, an hour hand, another hand for indicating another segment of time, an additional gear controlling the hour hand and magnetically positioned with respect to said timer gear and controlling said hour hand, said additional gear being coaxial with said timer gear and actuated by operation of the timepiece movement and by means actuatable by an operator for rotating the additional gear by at least one pitch, thus correspondingly rotating the hour hand, without influencing the indication of the other hand.
Claim 2
Dependent Claim
87 words
A timepiece movement comprising a timer gear, an hour hand, another hand for indicating another segment of time, an additional gear controlling the hour hand and magnetically positioned with respect to said timer gear and controlling said hour hand, said additional gear being coaxial with said timer gear and actuated by operation of the timepiece movement and by means actuatable by an operator for rotating the additional gear by at least one pitch, thus correspondingly rotating the hour hand, without influencing the indication of the other hand.
Claim 3
Dependent Claim
14 words
A timepiece movement according to claim 1, wherein said gears consist of hour wheels.
Claim 4
Dependent Claim
36 words
A timepiece movement according to claim 2, wherein one of said gears carries twelve permanent magnets, uniformly distributed about its axis and, whereas the other gear carries twelve pieces of magnetic mateRial arranged opposite said magnets.
Claim 5
Dependent Claim
13 words
A timepiece movement according to claim 1 wherein said gears comprise minute gears.
Claim 6
Dependent Claim
55 words
A timepiece movement according to claim 4, comprising an hour gear and the ratio between said hour gear and said minute gears is n, one of said minute gears carries 12/n permanent magnets uniformly distributed about its axis and the other minute gear carries 12/n pieces of magnetic material juxtaposed in correlation to said magnets.
Claim 7
Dependent Claim
22 words
A timepiece movement according to claim 1, wherein said gears comprise magnetizable material and are magnetized so as to obtain multiple poles.
Claim 8
Dependent Claim
14 words
A timepiece movement according to claim 3 wherein said magnetic material comprises soft iron.
Claim 9
Dependent Claim
14 words
A timepiece movement according to claim 3 wherein said magnetic material comprises permanent magnets.
Claim 10
Dependent Claim
14 words
A timepiece movement according to claim 5 wherein said magnetic material comprises soft iron.
Claim 11
Dependent Claim
14 words
A timepiece movement according to claim 5 wherein said magnetic material comprises permanent magnets.
Claim 12
Dependent Claim
148 words
A timepiece movement comprising a power train, a timer gear, an additional gear identical with said timer gear and coaxially mounted for relative rotation therebetween, a rotatably mounted hour hand drivingly connected with one of said gears, another hand for indicating another segment of time and rotatably mounted coaxially with said hour hand, means connecting one of said gears with said power train to drive said gear for rotating said hour hand in the usual manner, manually operated means connected with the other of said gears for driving said gear to rotate said hour hand to change the hour indication thereof without affecting the other said hand, and magnetic means normally coupling said gears for maintaining angular coincidence therebetween, whereby said hour hand may be manually adjusted to change the hour indication thereof and the magnetic means will maintain the relative relation with respect to lesser time segments.
Claim 13
Dependent Claim
148 words
A timepiece movement comprising a power train, a timer gear, an additional gear identical with said timer gear and coaxially mounted for relative rotation therebetween, a rotatably mounted hour hand drivingly connected with one of said gears, another hand for indicating another segment of time and rotatably mounted coaxially with said hour hand, means connecting one of said gears with said power train to drive said gear for rotating said hour hand in the usual manner, manually operated means connected with the other of said gears for driving said gear to rotate said hour hand to change the hour indication thereof without affecting the other said hand, and magnetic means normally coupling said gears for maintaining angular coincidence therebetween, whereby said hour hand may be manually adjusted to change the hour indication thereof and the magnetic means will maintain the relative relation with respect to lesser time segments.
Claim 14
Dependent Claim
47 words
A timepiece movement according to claim 11 wherein said magnetic means comprises a like number of pole pieces carried by said gears, said pole pieces being equi-spaced about the axis of said gears according to a predetermined time segment and disposed to normally be substantially in coincidence.
Claim 15
Dependent Claim
23 words
A timepiece movement according to claim 12 wherein said gears are hour gears and there are twelve pole pieces in each said gear.
Claim 16
Dependent Claim
13 words
A timepiece movement according to claim 12 wherein said gears are minute gears.
References Cited (Backward Citations)
US3233400A
Cited
CH457295A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-10-03 | 1976-04-03 | 1976-10-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-03 | 1980-04-03 | 1980-10-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-03 | 1984-04-03 | 1984-10-03 | $7700.00 | Window Closed / Lapsed |