US3205322A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Destructible magnetic switch
Assignee: Individual
•
Filing: 1963-09-11
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Granted: 1965-09-07
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Expires: 1983-09-11
Abstract
No abstract record available.
Inventors
- 👤 Jr Edwin G Reed
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 10:16
CPC Classifications
F; F42; F42C; F42C15/00; F42C15/38; F42B; F42B23/00; F42B23/10; F42B23/16; F42C11/00; F42C11/001; F42C11/007; H; H01; H01H; H01H36/00
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
147 words
IN A MAGNETIC SWITCH, (A) A FIRST FLOAT; (B) A MAGNETIC NEEDLE SECURED TO THE FIRST FLOAT; (C) A SECOND FLOAT; (D) AN ELECTRICAL CONTACT SECURED TO THE SECOND FLOAT; (E) SOLID INSULATION CONNECTED TO THE FLOATS AND INSULATING THE CONTACT FROM THE NEEDLE AND FORMING WITH THE FLOATS, NEEDLE AND CONTACT A TORSIONALLY RIGID UNIT; (F) A CONTAINER HAVING LIQUID ELECTRICAL INSULATION THEREIN ISOLATED FROM THE UNIT; (G) MEANS IMMERSING THE UNIT IN THE LIQUID; (H) THE UNIT BEING FLOATABLE IN THE LIQUID TO ASSUME A POSITION AZIMUTHALLY SUCH THAT THE NEEDLE EXTENDS PARALLEL TO THE LOCAL EARTH''S MAGNETIC FLUIX; (I) THE SOLID INSULATION BEING SOLUBLE IN THE LIQUID INSULATION; AND (J) MEANS INCLUDING THE FLOATS FOR ENABLING THE NEEDLE TO ENGAGE THE CONTACT ON DISTURBANCE OF THE LOCAL TO ENGAGE THE CONTACT ON DISTURBANCE OF THE LOCAL MAGNETIC FIELD WHEN THE SOLID INSULATION IS DISSOLVED.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-09-06 | 1969-03-08 | 1969-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-06 | 1973-03-08 | 1973-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-06 | 1977-03-08 | 1977-09-07 | $7700.00 | Window Closed / Lapsed |