Patent US4407586A successfully refreshed from Google Patents.
US4407586A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thin wrist-watch
Assignee: SSIH Management Services SA
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Filing: 1980-08-27
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Granted: 1983-10-04
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Expires: 2000-08-27
Abstract
Abstract An electronic wrist-watch of greatly reduced thickness has extremely thin me indicating discs for which a special driving and guiding system is employed. Further, a single-phase motor is provided with at least two stator windings for reducing the watch's thickness. A watch case comprises an integral case band in order to assure greater rigidity of this thin watch structure.
Inventors
- 👤 Jean-Pierre Musy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 13:31
CPC Classifications
G; G04; G04C; G04C17/00; G04C17/005; G04B; G04B33/00; G04B33/06; G04C17/0058
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
166 words
A wrist-watch of reduced thickness comprising a case, a crystal, at least two time indicating discs, a drive system arranged to drive said discs, said drive system itself being driven by an electric motor under control of an electronic circuit and wherein each of said indicator discs is formed from a single thin sheet of transparent material with teeth formed from this material on their periphery, said transparent material having a thickness between 0.05 mm and 0.15 mm, and each disc being driven from a common driving wheel which drives directly a first faster moving disc and indirectly a second slower moving disc via a gear train independent from the faster moving disc said discs being guided laterally at their periphery and proximate the driving point by at least one guide means including at least two coaxial independent idlers arranged to turn freely on a stud support on opposite sides of a disc said indicator discs being supported by a central axle stud for rotation thereabout.
Claim 2
Dependent Claim
166 words
A wrist-watch of reduced thickness comprising a case, a crystal, at least two time indicating discs, a drive system arranged to drive said discs, said drive system itself being driven by an electric motor under control of an electronic circuit and wherein each of said indicator discs is formed from a single thin sheet of transparent material with teeth formed from this material on their periphery, said transparent material having a thickness between 0.05 mm and 0.15 mm, and each disc being driven from a common driving wheel which drives directly a first faster moving disc and indirectly a second slower moving disc via a gear train independent from the faster moving disc said discs being guided laterally at their periphery and proximate the driving point by at least one guide means including at least two coaxial independent idlers arranged to turn freely on a stud support on opposite sides of a disc said indicator discs being supported by a central axle stud for rotation thereabout.
Claim 3
Dependent Claim
20 words
Wrist-watch as set forth in claim 1 wherein a watch case member includes a case band over its entire periphery.
Claim 4
Dependent Claim
21 words
Wrist-watch as set forth in claim 1 wherein the faster moving disc displays minutes and the slower moving disc displays hours.
Claim 5
Dependent Claim
25 words
Wrist-watch as set forth in claim 1 including two guide means situated on both sides of and proximate to the driving point of the discs.
Claim 6
Dependent Claim
30 words
Wrist-watch as set forth in claim 1 wherein the electric motor is a single phase bipolar motor comprising a stator magnetic circuit having two windings positioned adjacent to one another.
Claim 7
Dependent Claim
30 words
Wrist-watch as set forth in claim 1 wherein the electric motor is a single phase bipolar motor comprising a stator magnetic circuit having four windings positioned adjacent to one another.
Claim 8
Dependent Claim
97 words
A wrist-watch of reduced thickness comprising a case, a crystal, at least two time indicating discs, a drive system arranged to drive said discs, said drive system itself being driven by an electric motor under control of an electronic circuit and wherein said indicating discs are formed from thin sheets of material with teeth provided on the periphery, said electric motor being a single phase bipolar motor comprising a stator magnetic circuit having at least two windings positioned adjacent to one another so that the wrist-watch can be made thinner than if one large winding were used.
Claim 9
Dependent Claim
97 words
A wrist-watch of reduced thickness comprising a case, a crystal, at least two time indicating discs, a drive system arranged to drive said discs, said drive system itself being driven by an electric motor under control of an electronic circuit and wherein said indicating discs are formed from thin sheets of material with teeth provided on the periphery, said electric motor being a single phase bipolar motor comprising a stator magnetic circuit having at least two windings positioned adjacent to one another so that the wrist-watch can be made thinner than if one large winding were used.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-10-03 | 1987-04-04 | 1987-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-10-03 | 1991-04-04 | 1991-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-10-03 | 1995-04-04 | 1995-10-04 | $7700.00 | Window Closed / Lapsed |