US3379855A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid feed system
Assignee: Electro Optical Systems Inc
•
Filing: 1963-05-13
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Granted: 1968-04-23
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Expires: 1983-05-13
Abstract
No abstract record available.
Inventors
- 👤 Alvin T Forrester
- 👤 Frank A Barcatta
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 20:24
CPC Classifications
F; F03; F03H; F03H1/00; F03H1/0006; F03H1/0012; B; B64; B64G; B64G1/00; B64G1/22; B64G1/40; B64G1/402; B64G1/411; B64G1/413
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
120 words
A PROPELLANT FEED SYSTEM COMPRISING: A HOLLOW VESSEL HAVING AN EXIT PORT AT ONE END AND A FILL CAP THROUGH WHICH PROPELLANT MAY BE FED AT THE OTHER END THEREOF; A METAL SPONGE OF GRADUATED POROSITY MOUNTED IN AND FILLING SAID VESSEL BETWEEN SAID EXIT PORT AND SAID FILL CAP, SAID SPONGE BEING MADE UP OF A PLURALITY OF WAFERS HAVING CAPILLARY-SIZED PORES THEREIN AND THERETHROUGH OF RESPECTIVELY DIFFERENT PORE SIZES WITH THE WAFER HAVING THE FINEST PORE SIZE POSITIONED IN SAID EXIT PORT AND THE WAFER HAVING THE COARSEST PORE SIZE POSITIONED ADJACENT SAID FILL CAP; AND MEANS MOUNTED IN SAID EXIT PORT FOR SUFFICIENTLY HEATING THE FACE OF SAID WAFER OR FINEST POROSITY TO VAPORIZE ANY PROPELLANT THEREIN.
Claim 2
Dependent Claim
120 words
A PROPELLANT FEED SYSTEM COMPRISING: A HOLLOW VESSEL HAVING AN EXIT PORT AT ONE END AND A FILL CAP THROUGH WHICH PROPELLANT MAY BE FED AT THE OTHER END THEREOF; A METAL SPONGE OF GRADUATED POROSITY MOUNTED IN AND FILLING SAID VESSEL BETWEEN SAID EXIT PORT AND SAID FILL CAP, SAID SPONGE BEING MADE UP OF A PLURALITY OF WAFERS HAVING CAPILLARY-SIZED PORES THEREIN AND THERETHROUGH OF RESPECTIVELY DIFFERENT PORE SIZES WITH THE WAFER HAVING THE FINEST PORE SIZE POSITIONED IN SAID EXIT PORT AND THE WAFER HAVING THE COARSEST PORE SIZE POSITIONED ADJACENT SAID FILL CAP; AND MEANS MOUNTED IN SAID EXIT PORT FOR SUFFICIENTLY HEATING THE FACE OF SAID WAFER OR FINEST POROSITY TO VAPORIZE ANY PROPELLANT THEREIN.
References Cited (Backward Citations)
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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) | 1971-04-23 | 1971-10-23 | 1972-04-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-04-23 | 1975-10-23 | 1976-04-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-04-23 | 1979-10-23 | 1980-04-23 | $7700.00 | Window Closed / Lapsed |