US3157127A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Solid propellant grain with cellulose acetate coating
Assignee: Standard Oil Co
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Filing: 1962-03-15
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Granted: 1964-11-17
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Expires: 1982-03-15
Abstract
No abstract record available.
Inventors
- 👤 Wayne A Proell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 00:37
CPC Classifications
F; F42; F42B; F42B5/00; F42B5/02; F42B5/18; F42B5/192; F42B5/196; F02; F02K; F02K9/00; F02K9/08; F02K9/32; F02K9/34; F02K9/346
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
146 words
A SOLID PROPELLANT CONSISTING ESSENTIALL OF (I) A SHAPED BODY PORTION FORMED OF AMMONIUM NITRATE AS THE MAJOR COMPONENT AND AN OXIDIZABEL ORGANIC BINDER THEREFOR, THE SURFACE OF SAID BODY BEING CHARACTERIZED BY THE PRESENCE OF EXPOSED AMMONIUM NITRATE WHICH HAS NOT BEEN COVERED BY SAID BINDER AND (II) A SEALER COAT ADHERED TO AND ADAPTED TO SEAL THAT PART OF THE SURFACE OF SAID BODY WHERE DIRECT BURNING IS TO BE PREVENTED, WHERE SAID SEALER COAT HAS BEEN OBTAINED BY (A) APPLYING TO THE SURFACE TO BE COVERED A LAYER OF LIQUID CAPABLE OF PLASTICIZING CELLULOSE ACETATE, (B) APPLYING POWDERED CELLULOSE ACETATE TO SAID LIQUID COVERED SURFACE IN AN AMOUNT SUFFICIENT TO FORM A SEAL COAT THEREON AND (C) BAKING THE ACETATE COVERED SURFACE AT A TEMPERATURE OF ABOUT 90*120*C. FOR A TIME SUFFICIENT TO FORM A SEAL COAT OF CELLULOSE ACETATE ON SAID SURFACE.
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) | 1967-11-17 | 1968-05-18 | 1968-11-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-11-17 | 1972-05-18 | 1972-11-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-11-17 | 1976-05-18 | 1976-11-17 | $7700.00 | Window Closed / Lapsed |