US3211882A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical discharge machining power circuit
Assignee: Elox Corporation of Michigan
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Filing: 1962-08-22
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Granted: 1965-10-12
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Expires: 1982-08-22
Abstract
No abstract record available.
Inventors
- 👤 Robert S Webb
- 👤 Lobur Walter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 06:40
CPC Classifications
B; B23; B23H; B23H1/00; B23H1/02; B23H1/022
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
112 words
IN AN APPARATUS FOR REMOVING MATERIAL FROM A CONDUCTIVE WORKPIECE BY ELECTRICAL DISCHARGE, A MACHINING POWER CIRCUIT COMPRISING AN ELECTRODE SPACED FROM THE WORKPIECE BY A DIELECTRIC FILLED GAP, A FIRST SOURCE OF D.C., A FIRST RESISTOR AND A FIRST CAPACITOR CONNECTED ACROSS SAID FIRST SOURCE, SAID FIRST CAPACITOR CONNECTED ACROSS THE GAP, A SECOND SOURCE OF D.C., A UNIDIRECTIONAL CURRENT CONDUCTING DEVICE CONNECTED ACROSS SAID SECOND SOURCE, AND IN SERIES WITH SAID FIRST SOURCE AND THE GAP, A SECOND RESISTOR, AND A SECOND CAPACITOR COUPLED ACROS SAID SECOND SOURCE, SAID SECOND CAPACITOR CONNECTED ACROSS SAID SECOND SOURCE AND OPERABLE TO IONIZE THE GAP AND INITIATE THE DISCHARGE OF SAID FIRST CAPACITOR.
Claim 2
Dependent Claim
112 words
IN AN APPARATUS FOR REMOVING MATERIAL FROM A CONDUCTIVE WORKPIECE BY ELECTRICAL DISCHARGE, A MACHINING POWER CIRCUIT COMPRISING AN ELECTRODE SPACED FROM THE WORKPIECE BY A DIELECTRIC FILLED GAP, A FIRST SOURCE OF D.C., A FIRST RESISTOR AND A FIRST CAPACITOR CONNECTED ACROSS SAID FIRST SOURCE, SAID FIRST CAPACITOR CONNECTED ACROSS THE GAP, A SECOND SOURCE OF D.C., A UNIDIRECTIONAL CURRENT CONDUCTING DEVICE CONNECTED ACROSS SAID SECOND SOURCE, AND IN SERIES WITH SAID FIRST SOURCE AND THE GAP, A SECOND RESISTOR, AND A SECOND CAPACITOR COUPLED ACROS SAID SECOND SOURCE, SAID SECOND CAPACITOR CONNECTED ACROSS SAID SECOND SOURCE AND OPERABLE TO IONIZE THE GAP AND INITIATE THE DISCHARGE OF SAID FIRST CAPACITOR.
References Cited (Backward Citations)
US2273819A
Cited
US2756316A
Cited
US2794152A
Cited
US2835785A
Cited
US2892072A
Cited
US2951969A
Cited
US3052817A
Cited
US2996638A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-10-11 | 1969-04-12 | 1969-10-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-11 | 1973-04-12 | 1973-10-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-11 | 1977-04-12 | 1977-10-12 | $7700.00 | Window Closed / Lapsed |