Patent US3348015A successfully refreshed from Google Patents.
US3348015A
Expired / Lapsed
US
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Apparatus for machining by electro erosion
Assignee: Atellers Des Charmilles S A
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Filing: 1965-03-24
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Granted: 1967-10-17
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Expires: 1985-03-24
Abstract
No abstract record available.
Inventors
- 👤 Rhyner Heinz
- 👤 Vors Rene
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 08:31
CPC Classifications
H; H01; H01B; H01B7/00; B; B23; B23H; B23H11/00; B23H11/006; H01B11/00; H01B11/02; H01B11/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
167 words
IN AN ELECTRICAL DISCHARGE MACHINING APPARATUS FOR MACHINING A CONDUCTIVE WORKPIECE BY A TOOL ELECTRODE ACROSS A DIELECTRIC COOLANT FILED GAP, A POWER SUPPLY HAVING A PAIR OF TERMINALS EACH CONNECTIBLE TO A DIFFERENT TERMINAL OF SAID GAP, A LOW SELF-INDUCTANCE CONDUCTOR ARRANGEMENT FOR PROVIDING SHORT DURATION MACHINING PULSES OF SHARP RISE AND FALL CHARACTERISTIC COMPRISING A FIRST GROUP OF CONDUCTORS CONNECTED BETWEEN ONE OF SAID POWER SUPPLY TERMINALS AND ONE TERMINAL OF SAID GAP TO CONDUCT POWER IN ONE DIRECTION, A SECOND GROUP OF CONDUCTORS CONNECTED BETWEEN THE OTHER OF SAID POWER SUPPLY TERMINALS AND THE OTHER TERMINAL OF SAID GAP TO CONDUCT POWER IN THE OPPOSITE DIRECTION, SAID CONDUCTORS ELECTRICALLY INSULATED ONE FROM THE OTHER AND ARRANGED IN SUBSTANTIALLY PARALLEL SPACED RELATIONSHIP IN PLURALITY OF ROWS, EACH OF SAID CONDUCTORS IN ONE GROUP BEING AXIALLY ALIGNED WITH A CONDUCTOR OF THE OTHER GROUP ON AT LEAST ONE SIDE IN ITS OWN ROW AND PROXIMATE WITH A CONDUCTOR OF THE OTHER GROUP IN EACH ADJACENT ROW.
Claim 2
Dependent Claim
167 words
IN AN ELECTRICAL DISCHARGE MACHINING APPARATUS FOR MACHINING A CONDUCTIVE WORKPIECE BY A TOOL ELECTRODE ACROSS A DIELECTRIC COOLANT FILED GAP, A POWER SUPPLY HAVING A PAIR OF TERMINALS EACH CONNECTIBLE TO A DIFFERENT TERMINAL OF SAID GAP, A LOW SELF-INDUCTANCE CONDUCTOR ARRANGEMENT FOR PROVIDING SHORT DURATION MACHINING PULSES OF SHARP RISE AND FALL CHARACTERISTIC COMPRISING A FIRST GROUP OF CONDUCTORS CONNECTED BETWEEN ONE OF SAID POWER SUPPLY TERMINALS AND ONE TERMINAL OF SAID GAP TO CONDUCT POWER IN ONE DIRECTION, A SECOND GROUP OF CONDUCTORS CONNECTED BETWEEN THE OTHER OF SAID POWER SUPPLY TERMINALS AND THE OTHER TERMINAL OF SAID GAP TO CONDUCT POWER IN THE OPPOSITE DIRECTION, SAID CONDUCTORS ELECTRICALLY INSULATED ONE FROM THE OTHER AND ARRANGED IN SUBSTANTIALLY PARALLEL SPACED RELATIONSHIP IN PLURALITY OF ROWS, EACH OF SAID CONDUCTORS IN ONE GROUP BEING AXIALLY ALIGNED WITH A CONDUCTOR OF THE OTHER GROUP ON AT LEAST ONE SIDE IN ITS OWN ROW AND PROXIMATE WITH A CONDUCTOR OF THE OTHER GROUP IN EACH ADJACENT ROW.
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) | 1970-10-16 | 1971-04-17 | 1971-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-16 | 1975-04-17 | 1975-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-16 | 1979-04-17 | 1979-10-17 | $7700.00 | Window Closed / Lapsed |