Patent US5311647A successfully refreshed from Google Patents.
US5311647A
Expired / Lapsed
US
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Jewelry closure having both magnetic and mechanical clasps
Assignee: Davida Enterprises Inc
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Filing: 1993-06-21
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Granted: 1994-05-17
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Expires: 2013-06-21
Abstract
Abstract A jewelry closure includes a magnetic closure and a mechanical closure which is a safety feature, preventing the magnetic closure from being opened inadvertently. The mechanical closure includes a wire member partially embedded in a groove in a first jewelry closure member and a groove for receiving the wire member in a second jewelry closure member. The magnetic and mechanical closures are closed substantially simultaneously.
Inventors
- 👤 Davida Levy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-10 02:22
CPC Classifications
A; A44; A44C; A44C5/00; A44C5/18; A44C5/20; A44C5/2042; A44C5/2076; A44C5/208; A44D; A44D2203/00; Y; Y10; Y10T; Y10T24/00; Y10T24/32; Y10T24/45; Y10T24/45225; Y10T24/45471; Y10T24/45524; Y10T24/45529; Y10T24/45534
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
137 words
A jewelry closure comprising: a magnetic closure comprising first and second closure members for engaging together magnetically, wherein at least one of said first and second closure members comprises a magnet; a casing for supporting said first closure member and extending outwardly for engaging said second closure member; and a mechanical closure on said casing for engaging said second closure member when said second closure member is held by magnetic attraction to said first closure member, wherein said mechanical closure member comprises an annular groove on each member and a wire member partially embedded in a first of said grooves, wherein said wire member engages in a second of said grooves when said first and second members are engaged together, and said magnetic and mechanical closures must both be released in order to open the jewelry closure.
Claim 2
Dependent Claim
137 words
A jewelry closure comprising: a magnetic closure comprising first and second closure members for engaging together magnetically, wherein at least one of said first and second closure members comprises a magnet; a casing for supporting said first closure member and extending outwardly for engaging said second closure member; and a mechanical closure on said casing for engaging said second closure member when said second closure member is held by magnetic attraction to said first closure member, wherein said mechanical closure member comprises an annular groove on each member and a wire member partially embedded in a first of said grooves, wherein said wire member engages in a second of said grooves when said first and second members are engaged together, and said magnetic and mechanical closures must both be released in order to open the jewelry closure.
Claim 3
Dependent Claim
19 words
A jewelry closure according to claim 1 wherein said wire member comprises a bead partially embedded in said groove.
Claim 4
Dependent Claim
23 words
A jewelry closure according to claim 1 wherein said wire member comprises a material selected from the group consisting of metal and plastic.
Claim 5
Dependent Claim
20 words
A jewelry closure according to claim 1 wherein said wire member is shorter than the length of the annular groove.
Claim 6
Dependent Claim
22 words
A jewelry closure according to claim 1 wherein one of said closure members further comprises a band extending around the circumference thereof.
Claim 7
Dependent Claim
14 words
A jewelry closure according to claim 5 wherein said band comprises an ornamental band.
References Cited (Backward Citations)
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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) | 1997-05-16 | 1997-11-15 | 1998-05-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-05-16 | 2001-11-15 | 2002-05-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-05-16 | 2005-11-15 | 2006-05-17 | $7700.00 | Window Closed / Lapsed |