US3919012A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Propellant composition
Assignee: United States Department of the Navy
•
Filing: 1970-11-24
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Granted: 1975-11-11
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Expires: 1990-11-24
Abstract
Abstract A solid composite propellant composition consisting essentially of a conventional binder containing modified ammonium perchlorate which consists of whisker-like single crystals without inclusions and ranging in diameter from about 1 to 40 microns.
Inventors
- 👤 William R Mcbride
- 👤 William G Finnegan
- 👤 Arnold Adicoff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:26
CPC Classifications
C; C06; C06B; C06B45/00; Y; Y10; Y10S; Y10S149/00; Y10S149/11; Y10S149/113
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
66 words
A SOLID PROPELLANT FORMULATION COMPRISED OF AN OXIDIZER PHASE CONSISTING OF WHISKERS-LIKE CRYSTAL OF AMMONIUM PERCHLORATE IN COMBUSTION WITH AT LEAST ONE SOLID PROPELLANT BINDER SELECTED FROM THE GROUP CONSISTING OF HYDROXY TERMINATED POLYBUTADINE, CARBOXY TERMINATED POLYBUTADINE BUTADIENE ACRYLIC ACID COPOLYMERS, BUTADIENE ACRYLIC ACID ACRYLONITRITE TEPOLYMER, POLYESTERS, CONTAINING CONSTITUENTS SELECTED FROM THE GROUP CONSISTING OF METALS, METAL ORGANIC COMPOUNDS, METALLIC HYCLRIDES, BALLISTIC MODIFERS AND COMBINATIONS THEREOF.
Claim 2
Dependent Claim
66 words
A SOLID PROPELLANT FORMULATION COMPRISED OF AN OXIDIZER PHASE CONSISTING OF WHISKERS-LIKE CRYSTAL OF AMMONIUM PERCHLORATE IN COMBUSTION WITH AT LEAST ONE SOLID PROPELLANT BINDER SELECTED FROM THE GROUP CONSISTING OF HYDROXY TERMINATED POLYBUTADINE, CARBOXY TERMINATED POLYBUTADINE BUTADIENE ACRYLIC ACID COPOLYMERS, BUTADIENE ACRYLIC ACID ACRYLONITRITE TEPOLYMER, POLYESTERS, CONTAINING CONSTITUENTS SELECTED FROM THE GROUP CONSISTING OF METALS, METAL ORGANIC COMPOUNDS, METALLIC HYCLRIDES, BALLISTIC MODIFERS AND COMBINATIONS THEREOF.
Claim 3
Dependent Claim
29 words
The formulation in accordance with claim 1 wherein said whisker-like crystals are of varying dimensions ranging in a length to diameter ratio of from about 5:1 to about 100:1.
Claim 4
Dependent Claim
32 words
The formulation in accordance with claim 1 wherein said oxidizer phase consists of catalyzed ammonium perchlorate whiskers which consist essentially of ammonium perchlorate and a predetermined amount of a burning rate modifier.
Claim 5
Dependent Claim
30 words
The formulation in accordance with claim 3 wherein said burning rate modifier is a member selected from the group consisting of potassium perchlorate, ammonium permanganate, ammonium dichromate and iron oxide.
References Cited (Backward Citations)
US2991168A
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US3203842A
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US3383180A
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US3301722A
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US3359350A
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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) | 1978-11-10 | 1979-05-12 | 1979-11-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-11-10 | 1983-05-12 | 1983-11-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-11-10 | 1987-05-12 | 1987-11-11 | $7700.00 | Window Closed / Lapsed |