Patent US4131682A successfully refreshed from Google Patents.
Patent US3276987A successfully refreshed from Google Patents.
US3276987A
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US
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Electrolytic shaping apparatus
Assignee: Anocut Engineering Co
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Filing: 1961-12-08
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Granted: 1966-10-04
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Expires: 1981-12-08
Abstract
No abstract record available.
Inventors
- 👤 Lynn A Williams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 01:17
CPC Classifications
B; B23; B23H; B23H9/00; B23H9/14; B23H3/00; B23H3/02; B23H3/04; B23H7/00; B23H7/26; B23H7/30; B23H7/32; C; C25; C25F; C25F3/00; C25F3/16; C25F7/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
134 words
IN AN ELECTROLYTIC APPARATUS FOR REMOVING MATERIAL FROM AN ELECTRICALLY CONDUCTIVE WORKPIECE BY MEANS OF AN ELECTRODE HAVING A CONDUCTIVE WORKING FACE, SAID ELECTRODE BEING MOVABLE TOWARD AND AWAY FROM SAID WORKPIECE, CIRCUIT MEANS FOR IMPRESSING AN ELECTRIC POTENTIAL BETWEEN THE ELECTRODE AND THE WORKPIECE IN A SENSE TO MAKE THE ELECTRODE A CATHODE, SAID ELECTRODE COMPRISING A MULTIPLICITY OF SMALL DUCTS FORMED OF ELECTROCONDUCTIVE MATERIAL, MEANS SUPPORTING SAID DUCTS AT ONE END SO AS TO POSITION THE FREE ENDS THEREOF IN SLIGHTLY SPACED PARALLEL RELATION TO FORM SAID WORKING FACE, AND MEANS INCLUDING SAID SUPPORTING MEANS FOR SUPPLYING ELECTROLYTE FOR FLOW THROUGH SAID DUCTS, WHEREBY THE ELECTROLYTE IS DELIVERED AT THE ELECTRODE WORKING FACE FROM THE DUCT FREE ENDS AND ESCAPES FROM THE WORKING FACE BY WAY OF THE SPACES BETWEEN SAID DUCTS.
Claim 2
Dependent Claim
128 words
IN AN ELECTROLYTIC MACHINING APPARATUS HAVING MEANS FOR PASSING ELECTRICAL CURRENT THROUGH AN ELECTROLYTE FRM AN ELECTRODE TO A WORKPIECE FOR ERODING A CAVITY IN THE WORKPIECE, IN COMBINATION, FEED MEANS FOR FEEDING SAID ELECTROE INTO THE CAVITY BEING MACHINED AND FOR MAINTAINING PREDETERMINED GAP SPACING BETWEEN THE MACHINING PORTION OF THE ELECTRODE AND THE FACE OF THE CAVITY BEING ERODED IN THE WORKPIECE DURING MACHINING, AN ELECTRODE COMPRISING A SUPPORT SHANK PORTION AND MACHINING PORTION, THE MACHINING PORTION HAVING A FACE PORTION OF THE SHAPE OF THE CAVITY BEING MACHINED AND BEING REDUCED IN SECTION IMMEDIATELY BACK OF SAID FACE PORTION TO PROVIDE INCREASED CLEARANCE BETWEEN SAID REDUCED SECTION AND THE CAVITY WALL SUFFICIENT TO SUBSTANTIALLY INHIBIT ELECTROLYTIC ACTION BETWEEN SAID REDUCED SECTION AND THE CAVITY WALL.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-10-03 | 1970-04-04 | 1970-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-03 | 1974-04-04 | 1974-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-03 | 1978-04-04 | 1978-10-04 | $7700.00 | Window Closed / Lapsed |