US3838567A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Unidirectional coupling device for a watch movement
Assignee: Ebauchesfabrik ETA AG
•
Filing: 1974-01-15
•
Granted: 1974-10-01
•
Expires: 1994-01-15
Abstract
Abstract A unidirectional coupling device for a watch movement comprising two disc parts, one of the parts having two projecting elements on its disc face, the other part having apertures into which one of the two projecting elements engages when the disc fact tilts.
Inventors
- 👤 U Giger
- 👤 F Perrot
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 07:35
CPC Classifications
G; G04; G04B; G04B11/00; G04B11/006
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
178 words
A unidirectional coupling device able to operate in a loose wheel state or in a coupled state, for a watch movement, comprising a first moving part having a fixed axis of rotation, a second moving part, guiding means for said second moving part, arranged for permitting said second moving part to rotate coaxially with and to assume slanting positions with respect to said first moving part, at least two coupling elements projecting from one of said moving parts towards the other, each of said coupling elements having a stop face and three stop elements provided on the other one of said moving parts, said stop elements extending radially between apertures or recesses in the other one of said moving parts, and said apertures or recesses being arranged for receiving said coupling elements, abutment faces on each one of said stop elements, for cooperating with said stop faces, and inclines on said coupling elements or on said stop elements for providing alternate tilting movements of said second moving part during operation of said device in the loose wheel state.
Claim 2
Dependent Claim
178 words
A unidirectional coupling device able to operate in a loose wheel state or in a coupled state, for a watch movement, comprising a first moving part having a fixed axis of rotation, a second moving part, guiding means for said second moving part, arranged for permitting said second moving part to rotate coaxially with and to assume slanting positions with respect to said first moving part, at least two coupling elements projecting from one of said moving parts towards the other, each of said coupling elements having a stop face and three stop elements provided on the other one of said moving parts, said stop elements extending radially between apertures or recesses in the other one of said moving parts, and said apertures or recesses being arranged for receiving said coupling elements, abutment faces on each one of said stop elements, for cooperating with said stop faces, and inclines on said coupling elements or on said stop elements for providing alternate tilting movements of said second moving part during operation of said device in the loose wheel state.
Claim 3
Dependent Claim
24 words
A device according to claim 1, wherein the coupling elements are formed by portions of a moving part, blanked and bent at an angle.
Claim 4
Dependent Claim
19 words
A device according to claim 1, wherein the coupling elements are formed by portions stamped in a moving part.
Claim 5
Dependent Claim
26 words
A device according to claim 1, wherein the coupling elements or the apertures have inclines so oriented as to cause the tilting during loose wheel operation.
Claim 6
Dependent Claim
35 words
A device according to claim 4, wherein the coupling elements and the apertures are limited on the side opposite the inclines by radial sides at least approximately perpendicular to the planes of the moving parts.
Claim 7
Dependent Claim
32 words
A device according to claim 1, wherein each moving part comprises a circular plate, one of these plates being integral with a shaft while the other pivots with play on said shaft.
Claim 8
Dependent Claim
36 words
A device according to claim 6, wherein the number of coupling elements is two, these coupling elements being directly opposite one another, while the number of apertures for receiving the coupling elements is an odd number.
Claim 9
Dependent Claim
54 words
A device according to claim 6, wherein said shaft has a cylindrical bearing surface for the pivoting of the tilting part which is limited on one side by the plate of the moving part integral with this shaft and on the other side by a projecting collar made in one piece with the shaft.
Claim 10
Dependent Claim
44 words
A device according to claim 8, wherein the plate of the moving part which pivots on the shaft with play has a rectilinear rib perpendicular to the axis determined by the centers of the two projecting coupling elements and situated on the collar side.
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) | 1977-09-30 | 1978-04-01 | 1978-10-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-30 | 1982-04-01 | 1982-10-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-30 | 1986-04-01 | 1986-10-01 | $7700.00 | Window Closed / Lapsed |