Patent US3708974A successfully refreshed from Google Patents.
US3708974A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pallet attracting construction
Assignee: Suwa Seikosha KK
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Filing: 1971-12-27
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Granted: 1973-01-09
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Expires: 1991-12-27
Abstract
Abstract A pallet attracting construction wherein a C-shaped recess is rotatably mounted in the region of a balance bearing. A pallet having a member formed of a magnetic material secured thereto is positioned so that said member oscillates between the facing ends of said permanent magnet in an elongated hole in a support plate, the ends of said hole limiting the displacement of said pallet.
Inventors
- 👤 M Fujimori
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 10:17
CPC Classifications
G; G04; G04C; G04C3/00; G04C3/04; G04B; G04B15/00; G04B15/12; Y; Y10; Y10T; Y10T74/00; Y10T74/15; Y10T74/1502
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
160 words
A pallet attracting construction for an electric timepiece comprising a support plate; a balance wheel pivotably mounted on one side of said plate at a point thereon; a pivotably mounted pallet operatively coupled to said balance wheel for displacement in response to the oscillation of said balance wheel; an attracting member mounted on said pallet and projecting toward said support plate, said support plate being formed with an elongated slot therethrough for receiving sAid attracting member during the pivotable displacement of said pallet; and a C-shaped attracting magnet mounted for selective rotation on the side of said plate opposed from said balance wheel in the region of the point of mounting of said balance wheel, said attracting magnet and said slot being positioned so that the ends of said attracting magnet are in substantial alignment with the ends of said elongated slot for applying an attracting force to said attracting member at the extremes of pivotable displacement of said pallet.
Claim 2
Dependent Claim
160 words
A pallet attracting construction for an electric timepiece comprising a support plate; a balance wheel pivotably mounted on one side of said plate at a point thereon; a pivotably mounted pallet operatively coupled to said balance wheel for displacement in response to the oscillation of said balance wheel; an attracting member mounted on said pallet and projecting toward said support plate, said support plate being formed with an elongated slot therethrough for receiving sAid attracting member during the pivotable displacement of said pallet; and a C-shaped attracting magnet mounted for selective rotation on the side of said plate opposed from said balance wheel in the region of the point of mounting of said balance wheel, said attracting magnet and said slot being positioned so that the ends of said attracting magnet are in substantial alignment with the ends of said elongated slot for applying an attracting force to said attracting member at the extremes of pivotable displacement of said pallet.
Claim 3
Dependent Claim
35 words
A pallet attracting construction as recited in claim 1, wherein said slot is dimensioned so that the ends thereof define the outer limits of pivotable displacement of said pallet when engaged by said attracting member.
Claim 4
Dependent Claim
33 words
A pallet attracting construction as recited in claim 1, wherein said C-shaped attracting magnet is mounted so as to be positioned substantially concentric with the point of pivotable mounting of said balance wheel.
Claim 5
Dependent Claim
39 words
A pallet attracting construction as recited in claim 1, wherein said C-shaped attracting magnet is formed with at least one projecting portion for the manual selective rotation thereof to position the ends of said magnet relative to said slot.
References Cited (Backward Citations)
US2061047A
Cited
US2971324A
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US3026458A
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US3059413A
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US3122879A
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US3187126A
Cited
US3611707A
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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) | 1976-01-09 | 1976-07-10 | 1977-01-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-09 | 1980-07-10 | 1981-01-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-09 | 1984-07-10 | 1985-01-09 | $7700.00 | Window Closed / Lapsed |