US3707840A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stem construction in a calendar watch
Assignee: Suwa Seikosha KK
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Filing: 1972-07-27
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Granted: 1973-01-02
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Expires: 1992-07-27
Abstract
Abstract A watch stem in a calendar watch has a number of grooves thereon. One end of a spring, fastened at the other end to a base plate, is seated resiliently in one of the grooves. Movement of the watch stem in an axial direction requires that the seated end of the spring ride up on the walls of the grooves which are tapered. The resistance which must be overcome in moving the watch stem from one position to another can be varied by changing the angle of the groove walls and by changing the height of the walls between adjacent grooves.
Inventors
- 👤 M Miyasaka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 16:25
CPC Classifications
G; G04; G04B; G04B27/00; G04B27/02; G04B27/04
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
126 words
A construction for holding a watch stem in a watch at any of at least three positions with respect to said watch, comprising a watch stem having thereon at least three annular grooves, and spring means adapted to seat resiliently in any of said grooves, at least a portion of said spring means being sheet-like in form, and positioned to flex transversely of said sheet-like portion for holding said watch stem in any of said positions and permitting manually effected alteration of the position of said watch stem inwardly or outwardly of said watch by causing said spring means to move over the surfaces of said sloping walls away from and toward the axis of said stem, the walls of said grooves sloping at different angles.
Claim 2
Dependent Claim
126 words
A construction for holding a watch stem in a watch at any of at least three positions with respect to said watch, comprising a watch stem having thereon at least three annular grooves, and spring means adapted to seat resiliently in any of said grooves, at least a portion of said spring means being sheet-like in form, and positioned to flex transversely of said sheet-like portion for holding said watch stem in any of said positions and permitting manually effected alteration of the position of said watch stem inwardly or outwardly of said watch by causing said spring means to move over the surfaces of said sloping walls away from and toward the axis of said stem, the walls of said grooves sloping at different angles.
Claim 3
Dependent Claim
38 words
The construction as defined in claim 1, wherein said watch stem has a crown wherein the angle of the wall and the height of the peak between each successive pair of grooves increases with distance from the crown.
Claim 4
Dependent Claim
126 words
A construction for holding a watch stem in a watch at any of at least three positions with respect to said watch, comprising a watch stem having thereon at least three annular grooves, and spring means adapted to seat resiliently in any of said grooves, at least a portion of said spring means being sheet-like in form, and positioned to flex transversely of said sheet-like portion for holding said watch stem in any of said positions and permitting manually effected alteration of the position of said watch stem inwardly or outwardly of said watch by causing said spring means to move over the surfaces of said sloping walls away from and toward the axis of said stem, the peaks between said grooves being of different heights.
Claim 5
Dependent Claim
126 words
A construction for holding a watch stem in a watch at any of at least three positions with respect to said watch, comprising a watch stem having thereon at least three annular grooves, and spring means adapted to seat resiliently in any of said grooves, at least a portion of said spring means being sheet-like in form, and positioned to flex transversely of said sheet-like portion for holding said watch stem in any of said positions and permitting manually effected alteration of the position of said watch stem inwardly or outwardly of said watch by causing said spring means to move over the surfaces of said sloping walls away from and toward the axis of said stem, the peaks between said grooves being of different heights.
Claim 6
Dependent Claim
25 words
The construction as defined in claim 3, wherein said walls of said plurality of grooves slope at different angles and said peaks have different heights.
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) | 1976-01-02 | 1976-07-03 | 1977-01-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-02 | 1980-07-03 | 1981-01-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-02 | 1984-07-03 | 1985-01-02 | $7700.00 | Window Closed / Lapsed |