Patent US1518676A successfully refreshed from Google Patents.
Patent US3231782A successfully refreshed from Google Patents.
US3231782A
Expired / Lapsed
US
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Electrical stock removal method and apparatus
Assignee: Motors Liquidation Co
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Filing: 1960-08-30
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Granted: 1966-01-25
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Expires: 1980-08-30
Abstract
No abstract record available.
Inventors
- 👤 Millard A Ferguson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 22:30
CPC Classifications
B; B23; B23H; B23H1/00; B23H1/02; B23H1/022
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
94 words
IN ELECTRICAL STOCK REMOVAL APPARATUS, THE COMBINATION OF CONDUCTIVE TOOL AND WORKPIECE ELECTRODES SPACED APART SO AS TO FORM A GAP THEREBETWEEN, MEANS SUPPLYING A VOLTAGE OF A PREDETERMINED POLARITY TO THE GAP AT A CERTAIN FREQUENCY SO AS TO PRODUCE STOCK REMOVAL DISCHARGES ACROSS THE GAP, AND MEANS MAINTAINING THE VOLTAGE ACROSS THE GAP BETWEEN DISCHAGES AT A PREDETERMINED MINIMUM LEVEL JUST BELOW THE VOLTAGE REQUIRED TO MAINTAIN IONIZATION OF THE GAP AND OF THE SAME PREDETEMINED POLARITY SO THAT A MINIMUM INCREASE IN THE GAP VOLTAGE IS REQUIRED TO PRODUCE A DISCHARGE.
Claim 2
Dependent Claim
94 words
IN ELECTRICAL STOCK REMOVAL APPARATUS, THE COMBINATION OF CONDUCTIVE TOOL AND WORKPIECE ELECTRODES SPACED APART SO AS TO FORM A GAP THEREBETWEEN, MEANS SUPPLYING A VOLTAGE OF A PREDETERMINED POLARITY TO THE GAP AT A CERTAIN FREQUENCY SO AS TO PRODUCE STOCK REMOVAL DISCHARGES ACROSS THE GAP, AND MEANS MAINTAINING THE VOLTAGE ACROSS THE GAP BETWEEN DISCHAGES AT A PREDETERMINED MINIMUM LEVEL JUST BELOW THE VOLTAGE REQUIRED TO MAINTAIN IONIZATION OF THE GAP AND OF THE SAME PREDETEMINED POLARITY SO THAT A MINIMUM INCREASE IN THE GAP VOLTAGE IS REQUIRED TO PRODUCE A DISCHARGE.
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) | 1969-01-24 | 1969-07-26 | 1970-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-24 | 1973-07-26 | 1974-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-24 | 1977-07-26 | 1978-01-25 | $7700.00 | Window Closed / Lapsed |