Multiple gap electrical discharge machining circuit
Abstract
Abstract THE CIRCUIT INCLUDES AN ARRANGEMENT FOR PROVIDING ELECTRICAL DISCHARGE MACHINING ACROSS ONE OR MORE GAPS WITH POWER PULSES DERIVED FROM A COMMON POWER SUPPLY. EACH MACHINING GAP INCLUDES AN ELECTRONIC SWITCH AND HAS ASSOCIATED WITH IT A SHUNT DIODE OF BLOCKING POLARITY TO PREVENT GAP INDUCTANCE FROM BREAKING DOWN THE ASSOCIATED SWITCH. WHEN SEVERAL ELECTRONIC SWITCHING MEANS ARE USED, THEY ARE EACH CONNECTED THROUGH AN ISOLATING DIODE TO A COMMON PULSE GENERATOR OR TRIGGERING MEANS FOR TURNING THEM ON AND OFF AT THE SAME TIME. ALSO IN- CLUDED IN EACH GAP CIRCUIT IS A SERIES DIODE OF A POLARITY TO A PASS POWER PULSES TO THE GAP WITH A DETECTOR MEANS CONNECTED ACROSS THE SERIES DIODE FOR PROVIDING AN INDICATION OF COMPONENT FAILURE IN THE ASSOCIATED GAP CIRCUIT WHEN SEVERAL SWITCHES ARE CONNECTED IN PARALLEL.
Inventors
- 👤 Dalton R Verner
Bibliographic Details
Claims Analysis
Total Claims: 0References Cited (Backward Citations)
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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) | 1975-12-12 | 1976-06-12 | 1976-12-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-12-12 | 1980-06-12 | 1980-12-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-12-12 | 1984-06-12 | 1984-12-12 | $7700.00 | Window Closed / Lapsed |