Patent US2999462A successfully refreshed from Google Patents.
US2999462A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Restricted ammonium nitrate propellant
Assignee: —
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Filing: —
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Granted: 1961-09-12
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Expires: 1978-09-12
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 21:25
CPC Classifications
C; C06; C06B; C06B45/00; C06B45/12; C06B21/00; C06B21/0033; C06B45/04; C06B45/06; C06B45/10; F; F02; F02K; F02K9/00; F02K9/08; F02K9/10; F02K9/32; F02K9/34
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
167 words
A SOLID PROPELLANT COMPRISING A SHAPED BODY PORTION, FORMED OF AMMONIUM NITRATE AS THE MAJOR COMPONENT AND AN OXIDIZABLE BINDER THEREFOR, AND A COMBUSTION RESTRICTOR COAT POSITIONED IMMEDIATELY CONTIGUOUS TO THAT PART OF THE SURFACE OF SAID BODY WHERE DIRECT BURNING IS TO BE PREVENTED, WHICH RESTRICTOR CONSISTS ESSENTIALLY OF THE RESIN REACTION PRODUCT OF (A) AN EPOXY RESIN HAVING AN EPOXIDE EQUIVALENT WEIGHT BETWEEN ABOUT 165 AND 215 DERIVED FROM EPICHLOROHYDRIN AND A BISPHENOL WITH (B) A LIQUID POLYSULFIDE POLYMER HAVING AN AVERAGE MOLECULAR WEIGHT ON THE ORDER OF 1000 DERIVED FROM ALKALI METAL POLYSULFIDE, DICHLOROETHYL FORMAL AND A MINOR AMOUNT OF TRICHLORO-LOWER-ALKANE, AND WITH (C) A POLYALKYLENE POLYAMINE, THE WEIGHT RATIO OF SAID EPOXY TO SAID POLYSULFIDE HAVING BEEN BETWEEN ABOUT 70:30 AND 35:65 AND THE AMOUNT OF SAID POLYAMINE HAVING BEEN BETWEEN ABOUT 5 AND 15 PARTS BY WEIGHT PER 100 PARTS OF EPOXY PLUS POLYSULFIDE REACTANTS AND WHEREIN SAID RESTRICTOR COAT IS OBTAINED BY CONTACTING SAID SURFACE WITH A MIXTURE OF SAID REACTANTS.
Claim 2
Dependent Claim
167 words
A SOLID PROPELLANT COMPRISING A SHAPED BODY PORTION, FORMED OF AMMONIUM NITRATE AS THE MAJOR COMPONENT AND AN OXIDIZABLE BINDER THEREFOR, AND A COMBUSTION RESTRICTOR COAT POSITIONED IMMEDIATELY CONTIGUOUS TO THAT PART OF THE SURFACE OF SAID BODY WHERE DIRECT BURNING IS TO BE PREVENTED, WHICH RESTRICTOR CONSISTS ESSENTIALLY OF THE RESIN REACTION PRODUCT OF (A) AN EPOXY RESIN HAVING AN EPOXIDE EQUIVALENT WEIGHT BETWEEN ABOUT 165 AND 215 DERIVED FROM EPICHLOROHYDRIN AND A BISPHENOL WITH (B) A LIQUID POLYSULFIDE POLYMER HAVING AN AVERAGE MOLECULAR WEIGHT ON THE ORDER OF 1000 DERIVED FROM ALKALI METAL POLYSULFIDE, DICHLOROETHYL FORMAL AND A MINOR AMOUNT OF TRICHLORO-LOWER-ALKANE, AND WITH (C) A POLYALKYLENE POLYAMINE, THE WEIGHT RATIO OF SAID EPOXY TO SAID POLYSULFIDE HAVING BEEN BETWEEN ABOUT 70:30 AND 35:65 AND THE AMOUNT OF SAID POLYAMINE HAVING BEEN BETWEEN ABOUT 5 AND 15 PARTS BY WEIGHT PER 100 PARTS OF EPOXY PLUS POLYSULFIDE REACTANTS AND WHEREIN SAID RESTRICTOR COAT IS OBTAINED BY CONTACTING SAID SURFACE WITH A MIXTURE OF SAID REACTANTS.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-09-11 | 1965-03-13 | 1965-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-09-11 | 1969-03-13 | 1969-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-09-11 | 1973-03-13 | 1973-09-12 | $7700.00 | Window Closed / Lapsed |