US3145286A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for preparing cratered balls
Assignee: IRC Ltd
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Filing: 1961-11-20
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Granted: 1964-08-18
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Expires: 1981-11-20
Abstract
No abstract record available.
Inventors
- 👤 Fehling Hans Reinhard
- 👤 Harvey Edward Henry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:43
CPC Classifications
B; B23; B23H; B23H9/00; B43; B43K; B43K1/00; B43K1/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
82 words
A METHOD FOR PREPARING A CREATED BALL COMPRISING THE STEPS OF SUPPORTING AN ELECTRICALLY CONDUCTIVE SPHERE ON TWO ELECTRODES HAVING ADJACENT SURFACE PORTIONS SPACED BY A DISTANCE LESS THAN THE DIAMETER OF THE SPHERE SO THAT THE SPHERE IS FREE TO MOVE AWAY FROM THE ELECTRODES UNDER THE MECHANICAL INFLUENCE OF AN ELECTRICAL DISCHARGE, CAUSING A SERIES OF ELECTRICAL DISCHARGES TO PASS THROUGH THE SPHERE, AND CHANGING THE ORIENTATION OF THE SPHERE WITH RESPECT TO THE ELECTRODE SURFACE PORTIONS AFTER EACH DISCHARGE.
Claim 2
Independent Claim
82 words
A METHOD FOR PREPARING A CREATED BALL COMPRISING THE STEPS OF SUPPORTING AN ELECTRICALLY CONDUCTIVE SPHERE ON TWO ELECTRODES HAVING ADJACENT SURFACE PORTIONS SPACED BY A DISTANCE LESS THAN THE DIAMETER OF THE SPHERE SO THAT THE SPHERE IS FREE TO MOVE AWAY FROM THE ELECTRODES UNDER THE MECHANICAL INFLUENCE OF AN ELECTRICAL DISCHARGE, CAUSING A SERIES OF ELECTRICAL DISCHARGES TO PASS THROUGH THE SPHERE, AND CHANGING THE ORIENTATION OF THE SPHERE WITH RESPECT TO THE ELECTRODE SURFACE PORTIONS AFTER EACH DISCHARGE.
References Cited (Backward Citations)
US2850618A
Cited
US2974215A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-08-18 | 1968-02-17 | 1968-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-08-18 | 1972-02-17 | 1972-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-08-18 | 1976-02-17 | 1976-08-18 | $7700.00 | Window Closed / Lapsed |