US3279253A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dielectrophoretic propellant orientation system
Assignee: Douglas Aircraft Co Inc
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Filing: 1963-12-03
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Granted: 1966-10-18
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Expires: 1983-12-03
Abstract
No abstract record available.
Inventors
- 👤 Jr James Bertram Blackmon
- 👤 David E Knapp
- 👤 James C Moule
- 👤 Jeremy F Crocker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 05:09
CPC Classifications
B; B03; B03C; B03C5/00; B03C5/02; B03C5/022; B03C5/026; Y; Y10; Y10T; Y10T137/00; Y10T137/0318; Y10T137/2931; Y10T137/3003; Y10T137/3021
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
129 words
A FLUID ORIENTATION SYSTEM FOR ORIENTING FLUID COMPRISING: A TANK SHELL FOR HOLDING LIQUID, SAID TANK SHELL HAVING INNER WALLS CONSTRUCTED TO ELECTRICALLY CONDUCTIVE MATERIAL; A FIRST ELECTRODE POSITIONED WITHIN SAID TANK SHELL AND SPACED FROM SAID INNER WALLS; ELECTRICAL VOLTAGE PRODUCING MEANS CONNECTED BETWEEN SAID TANK SHEEL AND SAID FIRST ELECTRODE FOR PRODUCING AN ELECTRIC POTENTIAL THEREBETWEEN, SAID FIRST ELECTRODE HAVING A SHAPE AND A POSITION WITHIN SAID TANK SHELL SUCH THAT WHEN IT IS CHARGED RELATIVE TO SAID TANK WALLS A NON-UNIFORM ELECTRIC FIELD IS PRODUCED BETWEEN SAID WALLS AND SAID FIRST ELECTRODE; AND AT LEAST ONE CONICAL-LIKE, TAPERED SECONDARY ELECTRODE DISPOSED ABOUT SAID FIRST ELECTRODE, SPACED FROM SAID FIRST ELECTRODE, AND SPACED FROM SAID TANK SHELL, SAID SECONDARY ELECTRODE ELECTRICALLY CHARGED RELATIVE TO SAID FIRST ELECTRODE.
Claim 2
Dependent Claim
129 words
A FLUID ORIENTATION SYSTEM FOR ORIENTING FLUID COMPRISING: A TANK SHELL FOR HOLDING LIQUID, SAID TANK SHELL HAVING INNER WALLS CONSTRUCTED TO ELECTRICALLY CONDUCTIVE MATERIAL; A FIRST ELECTRODE POSITIONED WITHIN SAID TANK SHELL AND SPACED FROM SAID INNER WALLS; ELECTRICAL VOLTAGE PRODUCING MEANS CONNECTED BETWEEN SAID TANK SHEEL AND SAID FIRST ELECTRODE FOR PRODUCING AN ELECTRIC POTENTIAL THEREBETWEEN, SAID FIRST ELECTRODE HAVING A SHAPE AND A POSITION WITHIN SAID TANK SHELL SUCH THAT WHEN IT IS CHARGED RELATIVE TO SAID TANK WALLS A NON-UNIFORM ELECTRIC FIELD IS PRODUCED BETWEEN SAID WALLS AND SAID FIRST ELECTRODE; AND AT LEAST ONE CONICAL-LIKE, TAPERED SECONDARY ELECTRODE DISPOSED ABOUT SAID FIRST ELECTRODE, SPACED FROM SAID FIRST ELECTRODE, AND SPACED FROM SAID TANK SHELL, SAID SECONDARY ELECTRODE ELECTRICALLY CHARGED RELATIVE TO SAID FIRST ELECTRODE.
Claim 3
Dependent Claim
33 words
A LIQUID ORIENTATION SYSTEM AS DEFINED IN CLAIM 1 INCLUDING: CAPACITANCE MEASURING MEANS FOR MEASURING THE CAPACITANCE EXISTING BETWEEN SAID FIRST AND SECONDARY ELECTRODES, WHEREBY THE AMOUNT OF LIQUIDS SITUATED THEREBETWEEN IS DETERMINABLE.
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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) | 1969-10-17 | 1970-04-18 | 1970-10-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-17 | 1974-04-18 | 1974-10-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-17 | 1978-04-18 | 1978-10-18 | $7700.00 | Window Closed / Lapsed |