Patent US3789602A successfully refreshed from Google Patents.
US3789602A
Expired / Lapsed
US
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Day-date advancing structure for a timepiece
Assignee: Suwa Seikosha KK
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Filing: 1972-10-06
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Granted: 1974-02-05
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Expires: 1992-10-06
Abstract
Abstract An improved calendar advancing member for a calendar timepiece includes a calendar advancing wheel and at least one resilient finger mounted thereon and driven thereby through an intermittent indexing sequence whereby the calendar display is indexed to a next successive day and date position each 24 hours. The one or more resilient fingers are resilient and spring-like in a first position whereby the calendar display may be driven through a calendar correcting sequence without effecting damage thereto. However, they are rigid as driven by the calendar advancing wheel through intermeshing engagement with the calendar display member for indexing thereof.
Inventors
- 👤 I Nemoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 06:53
CPC Classifications
G; G04; G04B; G04B19/00; G04B19/24; G04B19/243; G04B19/247; G04B19/253; G04B19/25333; G04B19/25373; G04B19/25386
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
219 words
In a calendar timepiece having a calendar display member including day and date wheels, a calendar driving member for driving said day and date wheels of said calendar display member and a calendar advancing wheel for advancing said calendar driving member, an improved calendar advancing member including a rotatable calendar advancing wheel, and at least one resilient finger responsive to said calendar advancing wheel and rotatably mounted thereon for intermittently indexing said calendar display member, said at least one resilient finger having spring-like characteristics for driving said calendar display member therepast through a calendar correcting sequence without effecting damage thereto, said at least one resilient finger being rigid as driven by said calendar advancing wheel through intermeshing engagement with said calendar display member for indexing thereof, said at least one resilient finger being directly rotatable by said calendar advancing wheel, said at least one resilient finger comprising a first resilient finger having an indexing tooth at an end thereof for intermittently indexing said day wheel and a second resilient finger having an indexing tooth at an end thereof for intermittently indexing said date wheel, said first and second fingers being rotatably mounted on said calendar advancing wheel and said first and second fingers being directly driven thereby, said calendar advancing wheel being rotated one complete revolution each 24 hours.
Claim 2
Dependent Claim
219 words
In a calendar timepiece having a calendar display member including day and date wheels, a calendar driving member for driving said day and date wheels of said calendar display member and a calendar advancing wheel for advancing said calendar driving member, an improved calendar advancing member including a rotatable calendar advancing wheel, and at least one resilient finger responsive to said calendar advancing wheel and rotatably mounted thereon for intermittently indexing said calendar display member, said at least one resilient finger having spring-like characteristics for driving said calendar display member therepast through a calendar correcting sequence without effecting damage thereto, said at least one resilient finger being rigid as driven by said calendar advancing wheel through intermeshing engagement with said calendar display member for indexing thereof, said at least one resilient finger being directly rotatable by said calendar advancing wheel, said at least one resilient finger comprising a first resilient finger having an indexing tooth at an end thereof for intermittently indexing said day wheel and a second resilient finger having an indexing tooth at an end thereof for intermittently indexing said date wheel, said first and second fingers being rotatably mounted on said calendar advancing wheel and said first and second fingers being directly driven thereby, said calendar advancing wheel being rotated one complete revolution each 24 hours.
Claim 3
Dependent Claim
42 words
The improvement as defined in claim 1 including a preselected number of mounting pins fixedly connected to said first and second resilient fingers at predetermined sites thereon for rotatably mounting said first and second resilient fingers directly on said calendar advancing wheel.
Claim 4
Dependent Claim
112 words
The improvement as defined in claim 2 including the further improvement comprising a plurality of mounting pin receiving slots provided in said calendar advancing wheel for receiving said mounting pins fixedly connected to said first and second resilient fingers, said mounting pin receiving slots being defined in said calendar advancing wheel at predetermined distances one from another, each mounting pin receiving slot being of predetermined size, said first and second resilient fingers being spring-like as said mounting pins ride through their respective mounting pin receiving slots and said first and second resilient fingers being rigid as said mounting pins engage walls of said calendar advancing wheel defining said mounting pin receiving slots.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-02-04 | 1977-08-06 | 1978-02-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-04 | 1981-08-06 | 1982-02-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-04 | 1985-08-06 | 1986-02-05 | $7700.00 | Window Closed / Lapsed |