Patent US3223610A successfully refreshed from Google Patents.
US3223610A
Expired / Lapsed
US
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Apparatus for machining horizontal work surfaces
Assignee: Individual
•
Filing: 1962-09-21
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Granted: 1965-12-14
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Expires: 1982-09-21
Abstract
No abstract record available.
Inventors
- 👤 Inoue Kiyoshi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:55
CPC Classifications
B; B23; B23H; B23H5/00; B23H5/06
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
117 words
AN APPARATUS FOR SUCCESSIVELY ROUGH AND FINISH MACHINING A SUBSTANTIALLY PLANAR SURFACE ON A CONDUCTIVE WORKPIECE COMPRISING SUPPORT MEANS FOR HOLDING SAID WORKPIECE, A MACHINING TOOL OF THE MECHANICAL CUTTING TYPE FOR REMOVING MATERIAL FROM SAID SURFACE WITH A PREDETERMINED CUTTING WIDTH, AN ELECTRODE TOOL FOR REMOVING MATERIAL FROM SAID SURFACE ACROSS AN ELECTROLYTE FILLED GAP, A SOURCE OF ELECTRICAL POTENTIAL CONNECTED ACROSS SAID ELECTRODE TOOL AND SAID WORKPIECE, MEANS OPERATIVELY CONNECTED TO SAID ELECTRODE TOOL FOR DEFINING AN AREA OF EROSION ON SAID WORKPIECE SURFACE OF WIDTH AT LEAST EQUAL TO THE AFORESAID CUTTING WIDTH, FEED MEANS FOR PROVIDING SUCCESSIVE TRAVERSING MOVEMENTS IN A COMMON LINEAR PATH BETWEEN SAID TOOLS AND SAID WORKPIECE, AND MEANS FOR
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) | 1968-12-13 | 1969-06-14 | 1969-12-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-13 | 1973-06-14 | 1973-12-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-13 | 1977-06-14 | 1977-12-14 | $7700.00 | Window Closed / Lapsed |