US2990683A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ignition of solid rocket propellants
Assignee: Phillips Petroleum Co
•
Filing: 1957-12-30
•
Granted: 1961-07-04
•
Expires: 1977-12-30
Abstract
No abstract record available.
Inventors
- 👤 Ernest J Walden
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 09:19
CPC Classifications
F; F02; F02K; F02K9/00; F02K9/95; C; C06; C06C; C06C9/00; F42; F42C; F42C19/00; F42C19/08; F42C19/0803; F42C19/0819
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
159 words
AN IGNITION SUSTAINING COMPOSITION COMPRISING: SUSTAINING MATERIAL COMPRISING 60 TO 75 WEIGHT PERCENT OF AN INORGANIC OXIDIZING SALT SELECTED FROM THE GROUP CONSISTING OF THE AMMONIUM, ALKALI METAL, AND ALKALINE EARTH METAL SALTS OF NITRIC, PERCHLORIC, AND CHLORIC ACIDS, 10 TO 40 WEIGHT PERCENT OF A BINDER COMPRISING A RUBBER SELECTED FROM THE GROUP CONSISTING OF POLYSULFIDE POLYMERS, POLYURETHANES, AND COPOLYMERS OF CONJUGATED DIENES AND VINYL SUBSTITUTED HETEROCYCLIC NITROGEN BASES, AND 5 TO 25 WEIGHT PERCENT OF FINELY DIVIDED METAL SELECTED FROM THE GROUP CONSISTING OF ALUMINUM, MAGNESIUM, AND TITANIUM, AND A PLURALITY OF PELLETS OF PYROTECHNIC MATERIAL EMBEDDED AT RANDOM IN SAID SUSTAINING MATERIAL AND COMPRISING 2 TO 15 WEIGHT PERCENT ETHYLCELLULOSE, AND 98 TO 85 WEIGHT PERCENT OF A PYROTECHNIC COMPONENT HAVING THE FOLLOWING COMPOSITION IN PARTS BY WEIGHT: POTASSIUM PERCHLORATE 0-68 BARIUM NITRATE 0-70 ZIRCONIUM DICHROMATE 0-58 ZIRCONIUM/NICKEL ALLOY 0-80 ALUMINUM 0-33 MAGNESIUM 0-47 TITANIUM 0-65 ZIRCONIUM HYDRIDE 0-2 BORON 0-9 BLACK POWDER 0-3 TETRANITROCARBAZOLE 0-5
Claim 2
Dependent Claim
159 words
AN IGNITION SUSTAINING COMPOSITION COMPRISING: SUSTAINING MATERIAL COMPRISING 60 TO 75 WEIGHT PERCENT OF AN INORGANIC OXIDIZING SALT SELECTED FROM THE GROUP CONSISTING OF THE AMMONIUM, ALKALI METAL, AND ALKALINE EARTH METAL SALTS OF NITRIC, PERCHLORIC, AND CHLORIC ACIDS, 10 TO 40 WEIGHT PERCENT OF A BINDER COMPRISING A RUBBER SELECTED FROM THE GROUP CONSISTING OF POLYSULFIDE POLYMERS, POLYURETHANES, AND COPOLYMERS OF CONJUGATED DIENES AND VINYL SUBSTITUTED HETEROCYCLIC NITROGEN BASES, AND 5 TO 25 WEIGHT PERCENT OF FINELY DIVIDED METAL SELECTED FROM THE GROUP CONSISTING OF ALUMINUM, MAGNESIUM, AND TITANIUM, AND A PLURALITY OF PELLETS OF PYROTECHNIC MATERIAL EMBEDDED AT RANDOM IN SAID SUSTAINING MATERIAL AND COMPRISING 2 TO 15 WEIGHT PERCENT ETHYLCELLULOSE, AND 98 TO 85 WEIGHT PERCENT OF A PYROTECHNIC COMPONENT HAVING THE FOLLOWING COMPOSITION IN PARTS BY WEIGHT: POTASSIUM PERCHLORATE 0-68 BARIUM NITRATE 0-70 ZIRCONIUM DICHROMATE 0-58 ZIRCONIUM/NICKEL ALLOY 0-80 ALUMINUM 0-33 MAGNESIUM 0-47 TITANIUM 0-65 ZIRCONIUM HYDRIDE 0-2 BORON 0-9 BLACK POWDER 0-3 TETRANITROCARBAZOLE 0-5
References Cited (Backward Citations)
US1925641A
Cited
US1974015A
Cited
US2685837A
Cited
US2462135A
Cited
US2440271A
Cited
US2561670A
Cited
US2541389A
Cited
US2717204A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-07-03 | 1965-01-02 | 1965-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-03 | 1969-01-02 | 1969-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-03 | 1973-01-02 | 1973-07-04 | $7700.00 | Window Closed / Lapsed |