US3207960A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mechanical magnetic solenoid device
Assignee: Magic Decorator Co
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Filing: 1962-08-30
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Granted: 1965-09-21
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Expires: 1982-08-30
Abstract
No abstract record available.
Inventors
- 👤 Macdougal John Angus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 15:28
CPC Classifications
H; H01; H01F; H01F7/00; H01F7/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
165 words
A MECHANICAL MAGNETIC SOLENOID DEVICE COMPRISING AND OUTER RING ASSEMBLY AND AN INNER CORE ASSEMBLY, THE DIAMETER OF THE INNER CORE ASSEMBLY BEING LESS THAN THE INSIDE DIAMETER OF THE OUTER RING ASSEMBLY TO PERMIT INSERTION OF THE CORE ASSEMBLY INTO THE RING ASSEMBLY, THE CORE AND RING ASSEMBIES BEING PERMANENTLY MAGNETIZED, AND THE CORE ASSEMBLY COMPRISING AT LEAST TWO SEPARATE ELEMENTS EACH MAGNETIZED, THE HEIGHT OF THE CORE ASSEMBLY WHEN ONE OF THE ELEMENTS IS REMOVED BEING SUBSTANTIALLY EQUAL TO THE HEIGHT OF THE RING ASSEMBLY, SO THAT WHEN THE RING ASSEMBLY IS RESTED UPON A HORIZONTAL SURFACE WITH ITS AXIS EXTENDING VERTICALLY, AND THE CORE ASSEMBLY IS POSITIONED AXIALLY WITHIN THE RING ASSEMBLY WITH LIKE POLES ADJACENT ONE ANOTHER, THE CORE ASSEMBLY WITHOUT THE SAID ONE ELEMENT WILL BE HELD WITHIN THE RING ASSEMBLY BY MAGNETIC REPULSION WHEREAS ADDITION OF THE SAID ONE ELEMENT TO THE CORE ASSEMBLY WILL CAUSE THE CORE ASSEMBLY TO BE DRIVEN FROM THE RING ASSEMBLY THE MAGNETIC REPULSION.
Claim 2
Dependent Claim
165 words
A MECHANICAL MAGNETIC SOLENOID DEVICE COMPRISING AND OUTER RING ASSEMBLY AND AN INNER CORE ASSEMBLY, THE DIAMETER OF THE INNER CORE ASSEMBLY BEING LESS THAN THE INSIDE DIAMETER OF THE OUTER RING ASSEMBLY TO PERMIT INSERTION OF THE CORE ASSEMBLY INTO THE RING ASSEMBLY, THE CORE AND RING ASSEMBIES BEING PERMANENTLY MAGNETIZED, AND THE CORE ASSEMBLY COMPRISING AT LEAST TWO SEPARATE ELEMENTS EACH MAGNETIZED, THE HEIGHT OF THE CORE ASSEMBLY WHEN ONE OF THE ELEMENTS IS REMOVED BEING SUBSTANTIALLY EQUAL TO THE HEIGHT OF THE RING ASSEMBLY, SO THAT WHEN THE RING ASSEMBLY IS RESTED UPON A HORIZONTAL SURFACE WITH ITS AXIS EXTENDING VERTICALLY, AND THE CORE ASSEMBLY IS POSITIONED AXIALLY WITHIN THE RING ASSEMBLY WITH LIKE POLES ADJACENT ONE ANOTHER, THE CORE ASSEMBLY WITHOUT THE SAID ONE ELEMENT WILL BE HELD WITHIN THE RING ASSEMBLY BY MAGNETIC REPULSION WHEREAS ADDITION OF THE SAID ONE ELEMENT TO THE CORE ASSEMBLY WILL CAUSE THE CORE ASSEMBLY TO BE DRIVEN FROM THE RING ASSEMBLY THE MAGNETIC REPULSION.
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) | 1968-09-20 | 1969-03-22 | 1969-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-20 | 1973-03-22 | 1973-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-20 | 1977-03-22 | 1977-09-21 | $7700.00 | Window Closed / Lapsed |