Patent US2950239A successfully refreshed from Google Patents.
US2950239A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control system for electrolytic grinding
Assignee: Anocut Engineering Co
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Filing: 1956-03-02
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Granted: 1960-08-23
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Expires: 1976-03-02
Abstract
No abstract record available.
Inventors
- 👤 Lynn A Williams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 16:34
CPC Classifications
B; B23; B23H; B23H3/00; B23H3/02; B23H5/00; B23H5/06; B23H5/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
186 words
IN A ELECTROLYTIC GRINDING SYSTEM A GRINDING MACHINE HAVING A ROTATING SPINDLE AND MOUNTING MEANS FOR A WORKPIECE, INSULATING MEANS ELECTRICALLY ISOLATING THE SPINDLE FROM THE WORKPIECE, A GRINDING ELECTRODE MOUNTED ON THE GRINDING MACHNE SPINDLE, MEANS FOR SUPPLYING ELECTROLYTE TO A WORKING SURFACE OF THE GRINDING ELECTRODE SO THAT ELECTROLYTE PASSES BETWEEN THE WORKPIECE AND THE GRINDING ELECTRODE, AN ELECTRIC SUPPLY SYSTEM FOR SUPPLYING ING A DIRECT-CURRENT POTENTIAL BETWEEN THE GRINDING ELECTRODE AND A WORKPIECE, SAID ELECTRIC SUPPLY SYSTEM INCLUDING CONTROL CIRCUIT MEANS TENDING TO MAINTAIN A CONSTANT VOLTAGE AND CONTROL CIRCUIT MEANS ADAPTED TO REDUCE THE VOLTAGE IN RESPONSE TO SPARKING BETWEEN THE GRINDING ELECTRODE AND THE WORKPIECE, POWER CABLE CONNECTIONS FROM THE ELECTRIC SUPPLY SYSTEM CONNECTED RESPECTIVELY TO THE MOUNTING MEANS FOR THE WORKPIECE AND TO A POWER BRUSH SYSTEM MAKING CONTACT WITH THE SPINDLE, WIRE CONNECTING MEANS CONNECTING BOTH SAID CONTROL CIRCUIT MEANS RESPECTIVELY TO THE MOUNTING MEANS FOR THE WORKPIECE AND TO THE SPINDLE SAID CONNECTING MEANS INCLUDING AN AUXILIARY BRUSH NOT CARRYING POWER ELECTRICALLY INSULATED FROM THE POWER BRUSH MEANS AND MOUNTED TO RUN AGAINST THE SPINDLE OF THE MACHINE.
Claim 2
Dependent Claim
186 words
IN A ELECTROLYTIC GRINDING SYSTEM A GRINDING MACHINE HAVING A ROTATING SPINDLE AND MOUNTING MEANS FOR A WORKPIECE, INSULATING MEANS ELECTRICALLY ISOLATING THE SPINDLE FROM THE WORKPIECE, A GRINDING ELECTRODE MOUNTED ON THE GRINDING MACHNE SPINDLE, MEANS FOR SUPPLYING ELECTROLYTE TO A WORKING SURFACE OF THE GRINDING ELECTRODE SO THAT ELECTROLYTE PASSES BETWEEN THE WORKPIECE AND THE GRINDING ELECTRODE, AN ELECTRIC SUPPLY SYSTEM FOR SUPPLYING ING A DIRECT-CURRENT POTENTIAL BETWEEN THE GRINDING ELECTRODE AND A WORKPIECE, SAID ELECTRIC SUPPLY SYSTEM INCLUDING CONTROL CIRCUIT MEANS TENDING TO MAINTAIN A CONSTANT VOLTAGE AND CONTROL CIRCUIT MEANS ADAPTED TO REDUCE THE VOLTAGE IN RESPONSE TO SPARKING BETWEEN THE GRINDING ELECTRODE AND THE WORKPIECE, POWER CABLE CONNECTIONS FROM THE ELECTRIC SUPPLY SYSTEM CONNECTED RESPECTIVELY TO THE MOUNTING MEANS FOR THE WORKPIECE AND TO A POWER BRUSH SYSTEM MAKING CONTACT WITH THE SPINDLE, WIRE CONNECTING MEANS CONNECTING BOTH SAID CONTROL CIRCUIT MEANS RESPECTIVELY TO THE MOUNTING MEANS FOR THE WORKPIECE AND TO THE SPINDLE SAID CONNECTING MEANS INCLUDING AN AUXILIARY BRUSH NOT CARRYING POWER ELECTRICALLY INSULATED FROM THE POWER BRUSH MEANS AND MOUNTED TO RUN AGAINST THE SPINDLE OF THE MACHINE.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-08-23 | 1964-02-22 | 1964-08-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-08-23 | 1968-02-22 | 1968-08-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-08-23 | 1972-02-22 | 1972-08-23 | $7700.00 | Window Closed / Lapsed |