Patent US3072777A successfully refreshed from Google Patents.
US3072777A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High frequency electrode vibration
Assignee: Elox Corporation of Michigan
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Filing: 1960-03-25
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Granted: 1963-01-08
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Expires: 1980-03-25
Abstract
No abstract record available.
Inventors
- 👤 Ian C Mckechnie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 18:06
CPC Classifications
B; B23; B23H; B23H9/00; B23H9/001
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
60 words
IN AN ELECTRICAL MACHINING APPARATUS, AN ELECTRODE SEPARATED FROM A WORKPIECE BY A DIELECTRIC FILLED GAP, AN ELECTRODE SUPPORT, A PIEZOELECTRIC DISC HAVING ITS AXES OF MECHANICAL VIBRATION SUBSTANTIALLY ALIGNED WITH THE AXIS OF SAID ELECTRODE, A PAIR OF ELECTRICALLY CONDUCTIVE PLATES MOUNTED ON OPPOSING SIDES OF AND ABUTTING SAID PIEZOELECTRIC DISC AND FIXED TO SAID ELECTRODE AND ELECTRODE SUP-
Claim 2
Dependent Claim
60 words
IN AN ELECTRICAL MACHINING APPARATUS, AN ELECTRODE SEPARATED FROM A WORKPIECE BY A DIELECTRIC FILLED GAP, AN ELECTRODE SUPPORT, A PIEZOELECTRIC DISC HAVING ITS AXES OF MECHANICAL VIBRATION SUBSTANTIALLY ALIGNED WITH THE AXIS OF SAID ELECTRODE, A PAIR OF ELECTRICALLY CONDUCTIVE PLATES MOUNTED ON OPPOSING SIDES OF AND ABUTTING SAID PIEZOELECTRIC DISC AND FIXED TO SAID ELECTRODE AND ELECTRODE SUP-
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) | 1966-01-07 | 1966-07-09 | 1967-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-01-07 | 1970-07-09 | 1971-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-01-07 | 1974-07-09 | 1975-01-08 | $7700.00 | Window Closed / Lapsed |