US3633356A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mechanism for detachably attaching a timepiece movement to a watch casing, especially the middle ring thereof
Assignee: Citizen Watch Co Ltd
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Filing: 1970-08-17
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Granted: 1972-01-11
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Expires: 1990-08-17
Abstract
Abstract A movement holder ring for resiliently attaching a timepiece movement to a watch casing by means of fixing means such as case screws or pins comprising the provision of a pair of inwardly projecting attaching tongues made integral with a ring flange which constitutes the holder ring, together with a web ring made integral therewith. These tongues are arranged substantially diametrally opposite to each other and has each such a configuration that they are brought into engagement with said respective fixing means when assembling of the holder ring and the watch movement in the interior of said watch casing. Said holder ring has several inwardly and outwardly and downwardly directing projections for assuring optimum contact with the movement as well as the watch housing, for keeping the movement in position and in a shock-absorbing way.
Inventors
- 👤 Seizo Kitazima
- 👤 Tetuya Yasuda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 17:35
CPC Classifications
G; G04; G04B; G04B37/00; G04B37/04; G04B37/05; G04B37/052
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
165 words
Mechanism for detachably attaching a timepiece movement to a watch casing, especially the middle ring thereof by means of a holder ring, said mechanism being characterized by that said holder ring comprising an interrupted web ring, an interrupted ring flange made integral therewith, a plurality of separated inward projections formed integral with said ring flange and adapted for contact with the outer peripheral surface of said movement, a plurality of elongated circumferential grooves for providing an axial resiliency to said holder ring, a plurality of separated depending projections formed on the ring web and adapted for contact with a back cover of said watch, and a pair of inwardly projecting tongues made integral with said ring flange and arranged substantially diametrAlly opposite to each other, the main part of each of said tongues being positioned at a slightly lower level than that of said ring flange and said tongues being so shaped that they engage with fixing means mounted on the plate of said movement.
Claim 2
Dependent Claim
165 words
Mechanism for detachably attaching a timepiece movement to a watch casing, especially the middle ring thereof by means of a holder ring, said mechanism being characterized by that said holder ring comprising an interrupted web ring, an interrupted ring flange made integral therewith, a plurality of separated inward projections formed integral with said ring flange and adapted for contact with the outer peripheral surface of said movement, a plurality of elongated circumferential grooves for providing an axial resiliency to said holder ring, a plurality of separated depending projections formed on the ring web and adapted for contact with a back cover of said watch, and a pair of inwardly projecting tongues made integral with said ring flange and arranged substantially diametrAlly opposite to each other, the main part of each of said tongues being positioned at a slightly lower level than that of said ring flange and said tongues being so shaped that they engage with fixing means mounted on the plate of said movement.
Claim 3
Dependent Claim
81 words
Mechanism as set forth in claim 1, characterized in that said ring flange is formed with a plurality of enlarged edges made integral therewith and each extending a substantial circumferential length of the holder ring, said edges being adapted for contacting with the inside wall surface of the middle ring of the watch casing in such manner that a forced elastic deformation of the holder ring as appearing upon assembly of the later by said fixing means is substantially compensated for.
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) | 1975-01-10 | 1975-07-12 | 1976-01-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-10 | 1979-07-12 | 1980-01-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-10 | 1983-07-12 | 1984-01-11 | $7700.00 | Window Closed / Lapsed |