US3061529A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrolytic grinder and method of grinding
Assignee: Saint Gobain Abrasives Inc
•
Filing: 1959-04-06
•
Granted: 1962-10-30
•
Expires: 1979-04-06
Abstract
No abstract record available.
Inventors
- 👤 Crompton George
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:09
CPC Classifications
B; B23; B23H; B23H5/00; B23H5/06; B23H5/08
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
103 words
THE METHOD OF COMBINED GRINDING AND ELECTROLYTIC EROSION WHICH COMPRISES PROVIDING A WATER BASED ELECTROLYTE HAVING IONIZED MATERIAL THEREIN WHICH IS A CONDUCTOR OF ELECTRICITY, CAUSING SAID ELECTROLYTE TO FLOW THROUGH AN ELECTRICALLY CONDUCTIVE NOZZLE AS A CONTINUOUS STREAM FROM GRINDING WHEEL AND AN ELECTRICALLY CONDUCTIVE WORK PIECE GRINDING WHEEL AND AN ELECTRICALLY CONDUCTIVE WORK PIECE ENGAGHED THERBY, ENERGIZING A WORK PIECE SO DISPOSED POSITIVELY ELECTRICALLY, ENERGIZING SAID NOZZLE AND THENCE THE CONTINUOUS STREAM OF ELECTROLYTE DISCHARGED THEREFROM NEGATIVELY ELECTRICALLY, AND COINCIDENTALLY GRINDING A WORK PIECE SO DISPOSED WITH A GRINDING WHEEL, THEREBY ELECTROLYTICALLY ERODING THE WORK PIECE AND ALSO ABRASIVELY GRINDING IT.
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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) | 1965-10-29 | 1966-04-30 | 1966-10-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-10-29 | 1970-04-30 | 1970-10-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-10-29 | 1974-04-30 | 1974-10-30 | $7700.00 | Window Closed / Lapsed |