Patent US2946731A successfully refreshed from Google Patents.
US2946731A
Expired / Lapsed
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Method and apparatus for electrolytic shaping
Assignee: Standard Electrical Tool Co
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Filing: 1956-11-13
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Granted: 1960-07-26
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Expires: 1976-11-13
Abstract
No abstract record available.
Inventors
- 👤 John J Falls
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 08:50
CPC Classifications
B; B23; B23H; B23H5/00; B23H5/06; B23H5/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
95 words
AN ELECTROLYTIC GRINDER FOR SHAPING AN ELECTRICALLY CHARGED METALLIC WORKPIECE, COMPRISING IN COMBINATION, AN ELONGATE DRIVING SPINDLE HAVING A WORKING END AND A TAIL END, A CASING INCLUDING BEARING MEANS ROTATABLY SUPPORTING THE SPINDLE NEAR THE ENDS THEREOF, MEANS AT THE WORKING END OF THE SPINDLE FOR SUPPORTING A CURRENT CONDUCTIVE GRINDING WHEEL IN CLOSE PROXIMITY TO THE CHARGED WORKPIECE, AND ELECTRIC CURRENT CONDUCTIVE MEANS ELECTRICALLY INSULATED FROM THE SPINDLE, FOR DIRECTING AN ELECTRIC CURRENT FROM A TERMINAL UPON THE TAIL END OF THE SPINDLE DIRECTLY TO A PORTION OF THE GRINDING WHEEL, TO IMPOSE
Claim 2
Dependent Claim
95 words
AN ELECTROLYTIC GRINDER FOR SHAPING AN ELECTRICALLY CHARGED METALLIC WORKPIECE, COMPRISING IN COMBINATION, AN ELONGATE DRIVING SPINDLE HAVING A WORKING END AND A TAIL END, A CASING INCLUDING BEARING MEANS ROTATABLY SUPPORTING THE SPINDLE NEAR THE ENDS THEREOF, MEANS AT THE WORKING END OF THE SPINDLE FOR SUPPORTING A CURRENT CONDUCTIVE GRINDING WHEEL IN CLOSE PROXIMITY TO THE CHARGED WORKPIECE, AND ELECTRIC CURRENT CONDUCTIVE MEANS ELECTRICALLY INSULATED FROM THE SPINDLE, FOR DIRECTING AN ELECTRIC CURRENT FROM A TERMINAL UPON THE TAIL END OF THE SPINDLE DIRECTLY TO A PORTION OF THE GRINDING WHEEL, TO IMPOSE
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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) | 1963-07-26 | 1964-01-25 | 1964-07-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-07-26 | 1968-01-25 | 1968-07-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-07-26 | 1972-01-25 | 1972-07-26 | $7700.00 | Window Closed / Lapsed |