Electrostatic support
Abstract
Abstract 1. AN ELECTROSTATIC SUPPORT SYSTEM FOR SUPPORTING A MEMBER BETWEEN A PAIR OF ELECTRODES COMPRISING IN COMBINATION: ELECTROSTATIC SUPPORT CIRCUIT ESTABLISHING AN ALTERNATING POTENTIAL BETWEEN SAID MEMBER AND SAID ELECTRODES FOR ELECTROSTATICALLY SUPPORTING SAID MEMBER, SENSING MEANS PROVIDING AN ALTERNATING SIGNAL INDICATIVE OF THE DISPLACEMENT OF SAID MEMBER FROM A CENTERED POSITION BETWEEN SAID PAIR OF ELECTRODES, AND NEGATIVE IMPEDANCE MEANS RESPONSIVE TO SAID ALTERNATING SIGNAL AND PROVIDING A SIGNAL TO SAID ELECTROSTATIC SUPPORT CIRCUIT VARYING SAID ALTERNATING POTENTIAL BETWEEN SAID MEMBER AND SAID ELECTRODES SO AS TO EFFECT SUBSTANTIAL CENTERING OF SAID MEMBER BETWEEN SAID PAIR OF ELECTRODES.
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Bibliographic Details
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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) | 1976-06-04 | 1976-12-04 | 1977-06-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-04 | 1980-12-04 | 1981-06-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-04 | 1984-12-04 | 1985-06-05 | $7700.00 | Window Closed / Lapsed |