US3111735A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flexible permanent magnet
Assignee: Individual
•
Filing: 1961-04-10
•
Granted: 1963-11-26
•
Expires: 1981-04-10
Abstract
No abstract record available.
Inventors
- 👤 Ellis Robert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:27
CPC Classifications
A; A44; A44B; A44B19/00; A44B19/10; A44B19/16; H; H01; H01F; H01F7/00; H01F7/02; H01F7/0205; H01F7/021; H01F7/0215; A44D; A44D2203/00; Y; Y10; Y10S; Y10S428/00; Y10S428/90; Y10T; Y10T24/00; Y10T24/25; Y10T24/2532; Y10T24/2534
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
91 words
A FLEXIBLE PERMANENT MAGNETIC CLOSURE COMPRISING TWO RELATIVELY THIN STRIPS OF MAGNETIZABLE SHEET METAL, EACH OF SAID STRIPS HAVING EQUALLY SPACED TRANSVERSE SLOTS CUT THEREIN ALTERNATELY FROM EACH OPPOSITE LONGITUDINAL SIDE THEREOF, ONE OF SAID STRIPS BEING BENT SUBSTANTIALLY USHAPE IN CROSS SECTION AND PERMANENTLY MAGNETIZED WITH LIKE MAGNETIC POLES ON EACH RESPECTIVE LONGITUDINAL EDGE THEREOF WHILE THE OTHER STRIP IS THE ARMATURE AND ADAPTED TO CONTACT THE POLES OF SAID PERMANENT MAGNET WHEN SAID STRIPS ARE ATTACHED LONGITUDINALLY EACH ALONG A MARGIN OF OPPOSITE FLAPS OF A FLEXIBLE CLOSURE ARTICLE.
Claim 2
Dependent Claim
91 words
A FLEXIBLE PERMANENT MAGNETIC CLOSURE COMPRISING TWO RELATIVELY THIN STRIPS OF MAGNETIZABLE SHEET METAL, EACH OF SAID STRIPS HAVING EQUALLY SPACED TRANSVERSE SLOTS CUT THEREIN ALTERNATELY FROM EACH OPPOSITE LONGITUDINAL SIDE THEREOF, ONE OF SAID STRIPS BEING BENT SUBSTANTIALLY USHAPE IN CROSS SECTION AND PERMANENTLY MAGNETIZED WITH LIKE MAGNETIC POLES ON EACH RESPECTIVE LONGITUDINAL EDGE THEREOF WHILE THE OTHER STRIP IS THE ARMATURE AND ADAPTED TO CONTACT THE POLES OF SAID PERMANENT MAGNET WHEN SAID STRIPS ARE ATTACHED LONGITUDINALLY EACH ALONG A MARGIN OF OPPOSITE FLAPS OF A FLEXIBLE CLOSURE ARTICLE.
References Cited (Backward Citations)
US1775981A
Cited
US2252305A
Cited
US2397331A
Cited
US2389298A
Cited
US2397931A
Cited
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Cited
US2627097A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-11-25 | 1967-05-27 | 1967-11-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-11-25 | 1971-05-27 | 1971-11-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-11-25 | 1975-05-27 | 1975-11-26 | $7700.00 | Window Closed / Lapsed |