US3827235A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Winding and setting mechanism for watches
Assignee: Ebauches Bettlach SA
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Filing: 1973-06-18
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Granted: 1974-08-06
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Expires: 1993-06-18
Abstract
Abstract Winding and setting mechanism for watch movements, characterized by a drive pinion rigidly connected with the stem, by a sliding crown wheel mounted between the drive pinion and the center of the movement and cooperating with the ratchet wheel for the winding of the drive spring, and by a setting wheel mounted between the drive pinion and the periphery of the movement. The crown wheel has a circular opening engaged on a fixed pivot element of circular shape and of a diameter less than that of said opening, and it is held in engagement with the drive pinion by a portion of a bridge which extends trangentially to its toothing.
Inventors
- 👤 P Bachmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:17
CPC Classifications
G; G04; G04B; G04B27/00; G04B27/02
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
200 words
A winding and setting mechanism for watch movements, comprising: a watch stem mounted for rotational and sliding movement, the latter between first and second axially displaced positions; a drive pinion rigidly connected with said stem; a ratchet wheel coupled to a drive spring and mounted for rotation to wind said spring and store energy therein; a setting wheel mounted for rotation and coupled to the time indicating means of said watch movement for setting same, said setting wheel being mounted for rotation between the outer periphery of said watch movement and said drive pinion; a rotatable crown wheel; and mounting means located between said drive pinion and the center of the watch movement, mounting said crown wheel for rotational and sliding movement, the latter between first and second positions, perpendicularly displaced with respect to the axis of said crown wheel; said crown wheel engaging said ratchet wheel in said first position and being spaced apart from said ratchet wheel in said second position; and said axially displaced positions of the watch stem being such that in said first axial position said drive pinion engages said crown wheel whereas in said second axial position said drive pinion engages said setting wheel.
Claim 2
Dependent Claim
200 words
A winding and setting mechanism for watch movements, comprising: a watch stem mounted for rotational and sliding movement, the latter between first and second axially displaced positions; a drive pinion rigidly connected with said stem; a ratchet wheel coupled to a drive spring and mounted for rotation to wind said spring and store energy therein; a setting wheel mounted for rotation and coupled to the time indicating means of said watch movement for setting same, said setting wheel being mounted for rotation between the outer periphery of said watch movement and said drive pinion; a rotatable crown wheel; and mounting means located between said drive pinion and the center of the watch movement, mounting said crown wheel for rotational and sliding movement, the latter between first and second positions, perpendicularly displaced with respect to the axis of said crown wheel; said crown wheel engaging said ratchet wheel in said first position and being spaced apart from said ratchet wheel in said second position; and said axially displaced positions of the watch stem being such that in said first axial position said drive pinion engages said crown wheel whereas in said second axial position said drive pinion engages said setting wheel.
Claim 3
Dependent Claim
64 words
A winding and setting mechanism according to claim 1, further comprising: a fixed pivot element of circular shape, said crown wheel having a circular opening engaged with said fixed pivot element, said crown wheel opening having a larger diameter than said pivot eLement; and a bridge member extending tangentially to said crown wheel for maintaining said crown wheel in engagement with said pivot member.
Claim 4
Dependent Claim
44 words
A winding and setting mechanism according to claim 2, wherein said crown wheel is supported by a core housed below said bridge member, said core having a circular bearing surface on which the crown wheel pivots and a collar for supporting said crown wheel.
Claim 5
Dependent Claim
24 words
A winding and setting mechanism according to claim 3, further comprising first and second support brackets mounted on a base plate of said mechanism.
Claim 6
Dependent Claim
46 words
A winding and setting mechanism according to claim 4, wherein said first bracket has a hole to receive a pivot portion of the stem and a rectangular protrusion on which the crown core is fastened, said protrusion being engaged in an opening of the bridge member.
Claim 7
Dependent Claim
36 words
A winding and setting mechanism according to claim 4, wherein said second bracket has protrusions engaged in openings in the base plate in a further bridge member and a guiding cutout through which the stem passes.
Claim 8
Dependent Claim
48 words
A winding and setting mechanism according to claim 4, further comprising: a click-stop member engaging said ratchet wheel; and a spring plate mounted on said movement and having a tongue for axially positioning said stem in said first and second positions and an arm engaging said click-stop member.
Claim 9
Dependent Claim
33 words
A winding and setting mechanism according to claim 7, wherein said spring plate is fixed to one of said brackets and to a pillar connecting a further bridge member to said base plate.
Claim 10
Dependent Claim
58 words
A winding and setting mechanism according to claim 8, wherein said first bracket is fastened between the first bridge member and the base plate, the second bracket is fastened between the further bridge member and the base plate and the crown wheel is held in engagement with the drive pinion by a portion of the further bridge member.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-08-05 | 1978-02-04 | 1978-08-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-08-05 | 1982-02-04 | 1982-08-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-08-05 | 1986-02-04 | 1986-08-06 | $7700.00 | Window Closed / Lapsed |