Patent US3409524A successfully refreshed from Google Patents.
US3409524A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrolytic method for deburring annular shoulders defining machined holes
Assignee: General Electric Co
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Filing: 1966-03-23
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Granted: 1968-11-05
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Expires: 1986-03-23
Abstract
No abstract record available.
Inventors
- 👤 Robert D Olson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:08
CPC Classifications
B; B23; B23H; B23H9/00; B23H9/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
161 words
IN A METHOD FOR REMOVING ELECTRICALLY CONDUCTIVE MATERIAL FROM A WORKPIECE PORTION DEFINING THE PERIPHERY OF AT LEAST ONE HOLE THROUGH THE WORKPIECE PORTION, THE STEPS OF: POSTITIONING THE WORKPIECE PORTION IN JUXTAPOSITION WITH AN ELECTRICALLY CONDUCTIVE TOOL ELECTRODE CONFIGURED TO PERMIT ELECTROLYTE FLOWING FROM SAID HOLE TO PROCEED ALONG ANY PATHS WHICH DO NOT PERMIT THE ELECTROLYTE TO RECONTACT THE WORKPIECE AND SPACED TO DEFINE AN ELECTROLYTIC MACHINING GAP; DIRECTING ELECTROLYTE THROUGH THE HOLE IN THE WORKPIECE PORTION FROM THE WORKPIECE TOWARD AND IN CONTACT WITH THE TOOL TO CAUSE A CONTINUOUS STREAM OF ELECTROLYTE ACROSS THE GAP WITHOUT RECONTACTING THE WORKPIECE, AND AT THE SAME TIME, APPLYING AN ELECTRICAL POTENTIAL BETWEEN THE TOOL AND THE WORKPIECE PORTION SO THAT THE WORKPIECE PORTION IS PREDOMINANTLY ANODIC WITH RESPECT TO THE TOOL WHILE PASSING THROUGH THE ELECTROLYTE SUFFICIENT ELECTRICAL CURRENT BETWEEN THE TOOL AND THE WORKPIECE PORTION TO REMOVE MATERIAL ELECTROLYTICALLY FROM THE WORKPIECE PORTION AT THE PERIPHERY OF THE HOLE.
Claim 2
Dependent Claim
161 words
IN A METHOD FOR REMOVING ELECTRICALLY CONDUCTIVE MATERIAL FROM A WORKPIECE PORTION DEFINING THE PERIPHERY OF AT LEAST ONE HOLE THROUGH THE WORKPIECE PORTION, THE STEPS OF: POSTITIONING THE WORKPIECE PORTION IN JUXTAPOSITION WITH AN ELECTRICALLY CONDUCTIVE TOOL ELECTRODE CONFIGURED TO PERMIT ELECTROLYTE FLOWING FROM SAID HOLE TO PROCEED ALONG ANY PATHS WHICH DO NOT PERMIT THE ELECTROLYTE TO RECONTACT THE WORKPIECE AND SPACED TO DEFINE AN ELECTROLYTIC MACHINING GAP; DIRECTING ELECTROLYTE THROUGH THE HOLE IN THE WORKPIECE PORTION FROM THE WORKPIECE TOWARD AND IN CONTACT WITH THE TOOL TO CAUSE A CONTINUOUS STREAM OF ELECTROLYTE ACROSS THE GAP WITHOUT RECONTACTING THE WORKPIECE, AND AT THE SAME TIME, APPLYING AN ELECTRICAL POTENTIAL BETWEEN THE TOOL AND THE WORKPIECE PORTION SO THAT THE WORKPIECE PORTION IS PREDOMINANTLY ANODIC WITH RESPECT TO THE TOOL WHILE PASSING THROUGH THE ELECTROLYTE SUFFICIENT ELECTRICAL CURRENT BETWEEN THE TOOL AND THE WORKPIECE PORTION TO REMOVE MATERIAL ELECTROLYTICALLY FROM THE WORKPIECE PORTION AT THE PERIPHERY OF THE HOLE.
References Cited (Backward Citations)
US2989445A
Cited
US3384563A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-11-05 | 1972-05-06 | 1972-11-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-11-05 | 1976-05-06 | 1976-11-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-11-05 | 1980-05-06 | 1980-11-05 | $7700.00 | Window Closed / Lapsed |