Magnetic electric switch without contacts
Abstract
Abstract A MAGNETIC ELECTRIC SWITCH WITHOUT CONTACTS HAS A DRIVER STAGE GENERATING A PULSED CURRENT TO A COIL OF A SWITCH ELEMENT WITH AN OUTPUT AMPLIFIER BEING ALSO CONNECTED TO THE COIL THROUGH A DIODE AND CAPACITOR. THE SWITCH ELEMENT COIL IS AROUND A FERROMAGNETIC CORE AND A PERMANENT MAGNET ESTABLISHES A MAGNETIC FIELD BLOCKING MAGNETICALLY THE CORE. THE SWITCH ELEMENT ALSO HAS A SECOND PERMANENT MAGNET DISPLACEABLE TOWARD AND AWAY FROM THE FIRST PERMANENT MAGNET WITH ITS MAGNETIC POLES OPPOSITELY DISPOSED FROM THE POOLES OF THE FIRST MAGNET SO THAT MOVEMENT OF THE SECOND MAGNET TOWARD THE FIRST MAGNET COUNTERACTS THE BLOCKING MAGNETIC FIELD AND THE AMPLIFIER IS CHARGED THROUGH THE CAPACITOR INTO THE ON STATE. THE SECOND MAGNET IS MOVED AWAY FROM THE FIRST MAGNET SO THAT THE CORE AGAIN BECOMES MAGNETICALLY BLOCKED AND THE AMPLIFIER OUTPUT INDICATES AN OFF STATE.
Inventors
- 👤 Hans-Joachim Buch
Bibliographic Details
Claims Analysis
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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) | 1974-06-27 | 1974-12-27 | 1975-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-27 | 1978-12-27 | 1979-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-27 | 1982-12-27 | 1983-06-28 | $7700.00 | Window Closed / Lapsed |