US3894925A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrode for electrical machining
Assignee: Individual
•
Filing: 1974-02-01
•
Granted: 1975-07-15
•
Expires: 1994-02-01
Abstract
Abstract An electrode for the electrical machining of a conductive workpiece by ECM or EDM defines a space with the holder through which a coolant is circulated to limit thermal deformation in use. The coolant flow is independent of the machining liquid and is completely separate therefrom.
Inventors
- 👤 Kiyoshi Inoue
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 13:04
CPC Classifications
B; B21; B21D; B21D26/00; B21D26/02; B21D26/06; B21D26/12; B23; B23H; B23H7/00; B23H7/22
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
73 words
In combination with an apparatus for the electrical-discharge machining of a workpiece, an electrode system comprising an electrode holder; a sheet-metal body mounted on said holder and defining an electrical machining surface; means for passing an electrical-machining liquid along said surface and between said surface and said workpiece; and means for passing a cooling liquid exclusively along a surface of said sheet-metal body opposite said machining surface and independently of said machining liquid.
Claim 2
Dependent Claim
73 words
In combination with an apparatus for the electrical-discharge machining of a workpiece, an electrode system comprising an electrode holder; a sheet-metal body mounted on said holder and defining an electrical machining surface; means for passing an electrical-machining liquid along said surface and between said surface and said workpiece; and means for passing a cooling liquid exclusively along a surface of said sheet-metal body opposite said machining surface and independently of said machining liquid.
Claim 3
Dependent Claim
75 words
AN ELECTRODE SYSTEM FOR THE ELECTRICAL MACHINING OF A WORKPIECE, COMPRISING AN ELECTRODE HOLDER, A SHEET-METAL BODY MOUNTED ON SAID HOLDER AND DEFINING AN ELECTRICAL MACHINING SURFACE, MEANS FOR PASSING AN ELECTRICAL-MACHINING LIQUID ALONG SAID SURFACE AND BETWEEN SAD SURFACE AND SAID WORKPIECE, MEANS INCLUDING A TUBE ARRANGEMENT IN HEATEXCHANGING RELATION WITH SAID OPPOSITE SURFACE OF SAID SHEETMETAL BODY FOR PASSING A COOLING LIQUID EXCLUSIVELY ALONG A SURFACE OF SAID SHEET-META BODY OPPOSITE SAID MACHINING
Claim 4
Dependent Claim
75 words
AN ELECTRODE SYSTEM FOR THE ELECTRICAL MACHINING OF A WORKPIECE, COMPRISING AN ELECTRODE HOLDER, A SHEET-METAL BODY MOUNTED ON SAID HOLDER AND DEFINING AN ELECTRICAL MACHINING SURFACE, MEANS FOR PASSING AN ELECTRICAL-MACHINING LIQUID ALONG SAID SURFACE AND BETWEEN SAD SURFACE AND SAID WORKPIECE, MEANS INCLUDING A TUBE ARRANGEMENT IN HEATEXCHANGING RELATION WITH SAID OPPOSITE SURFACE OF SAID SHEETMETAL BODY FOR PASSING A COOLING LIQUID EXCLUSIVELY ALONG A SURFACE OF SAID SHEET-META BODY OPPOSITE SAID MACHINING
References Cited (Backward Citations)
US1982009A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-07-14 | 1979-01-13 | 1979-07-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-07-14 | 1983-01-13 | 1983-07-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-07-14 | 1987-01-13 | 1987-07-15 | $7700.00 | Window Closed / Lapsed |