Patent US4091971A successfully refreshed from Google Patents.
Patent US3129477A successfully refreshed from Google Patents.
US3129477A
Expired / Lapsed
US
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Magnetic clasp
Assignee: New Kyoei Inc
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Filing: 1962-06-21
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Granted: 1964-04-21
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Expires: 1982-06-21
Abstract
No abstract record available.
Inventors
- 👤 Mizuno Mitsuo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 21:57
CPC Classifications
A; A44; A44C; A44C5/00; A44C5/18; A44C5/20; A44C5/2076; A44D; A44D2203/00; Y; Y10; Y10T; Y10T24/00; Y10T24/32
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
122 words
A MAGNETIC CLASP COUPLING FOR JEWELRY, COMPRISING A PAIR OF OPPOSED MAGNET HOLDING CLASP MEMBERS EACH HAVING A FLAT SURFACE OPPOSED TO THE FLAT SURFACE ON THE OTHER MEMBER AND EACH HAVING A RECESS THEREIN OPENING OUT OF THE FLAT SURFACE AND OPPOSED TO THE RECESS IN THE OTHER MEMBER, SAID RECESSES EACH HAVING A SUBSTANTIALLY FLAT BOTTOM WITH A CENTRALLY LOCATED HOLLOW THEREIN, A MAGNET IN EACH RECESS, THE MAGNETS EACH HAVING A FLAT SURFACE ALIGNED WITH THE FLAT SURFACE ON THE CLASP MEMBER AND WITH THE NORTH POLE OF ONE MAGNET AT THE FLAT SURFACE OF ONE OF THE CLASP MEMBERS AND THE SOUTH POLE OF THE OTHER MAGNET AT THE FLAT SURFACE OF THE OTHER CLASP MEMBER, AND EACH
Claim 2
Dependent Claim
122 words
A MAGNETIC CLASP COUPLING FOR JEWELRY, COMPRISING A PAIR OF OPPOSED MAGNET HOLDING CLASP MEMBERS EACH HAVING A FLAT SURFACE OPPOSED TO THE FLAT SURFACE ON THE OTHER MEMBER AND EACH HAVING A RECESS THEREIN OPENING OUT OF THE FLAT SURFACE AND OPPOSED TO THE RECESS IN THE OTHER MEMBER, SAID RECESSES EACH HAVING A SUBSTANTIALLY FLAT BOTTOM WITH A CENTRALLY LOCATED HOLLOW THEREIN, A MAGNET IN EACH RECESS, THE MAGNETS EACH HAVING A FLAT SURFACE ALIGNED WITH THE FLAT SURFACE ON THE CLASP MEMBER AND WITH THE NORTH POLE OF ONE MAGNET AT THE FLAT SURFACE OF ONE OF THE CLASP MEMBERS AND THE SOUTH POLE OF THE OTHER MAGNET AT THE FLAT SURFACE OF THE OTHER CLASP MEMBER, AND EACH
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) | 1967-04-21 | 1967-10-21 | 1968-04-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-04-21 | 1971-10-21 | 1972-04-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-04-21 | 1975-10-21 | 1976-04-21 | $7700.00 | Window Closed / Lapsed |