Patent US3370536A successfully refreshed from Google Patents.
US3370536A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Incendiary projectile
Assignee: United States Department of the Army
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Filing: 1961-10-27
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Granted: 1968-02-27
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Expires: 1981-10-27
Abstract
No abstract record available.
Inventors
- 👤 Francis Gus
- 👤 William H Sustrich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:21
CPC Classifications
F; F42; F42B; F42B12/00; F42B12/02; F42B12/36; F42B12/44
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
266 words
A PROJECTILE COMPRISING A CYLINDRICAL BODY, INCENDIARY MATERIAL CONTAINED WITHIN SAID BODY AND COMPRESSED UNDER AT LEAST A 5,000 P.S.I. PRESSURE AND CAPABLE OF BURNING FOR SUBSTANTIALLY 1,000 MILLISECONDS, A PLURALITY OF METAL MASSES AT LEAST AS HEAVY AS LEAD IN SAID INCENDIARY MATERIAL, A CONICAL NOSE ON SAID BODY, A STAB AND BALL ROTOR TYPE NOSE FUZE DETONATOR, AND A BOOSTER DETONATOR BETWEEN SAID BALL ROTOR DETONATOR AND SAID INCENDIARY MATERIAL FOR IGNITING THE LATTER, SAID BOOSTER DETONATOR BEING LOCATED IN A FRONT PORTION OF SAID CYLINDRICAL BODY AND SAID INCENDIARY MATERIAL, SAID BOOSTER DETONATOR BEING OF A STRENGTH TO BLOW SAID NOSE OFF SAID BODY ON IGNITION, SAID PROJECTILE BEING OF 20 MILLIMETER SIZE CONTAINING ABOUT 78 PELLETS EACH WEIGHING AT LEAST ABOUT AS MUCH AS A LEAD SHORT OF .177 INCH DIAMETER, ABOUT 75 GRAINS OF AN INCENDIARY MATERIAL CONTAINING ABOUT 98% OF ZIRCONIUM HAVING A PARTICLE SIZE OF 20 TO 60 MESH AND ABOUT 1% BARIUM NITRATE WITH ABOUT 1% OF A MIXTURE OF A 50-50 ALLOY OF MAGNESIUM AND ALUMINUM, WHEREBY ON REDUCTION IN VELOCITY OF SAID BODY, THE NOSE IS BLOWN AWAY QUICKLY AND THE INCENDIARY AND METAL MASSES ARE GUIDED FROM SAID BODY AS A BURNING AGGLOMERATED MASS WHILE SAID BODY IS OF A THICKNESS TO BE UNSHATTERED AS SAID BURNING INCENDIARY AND ITS METAL MASSES ISSUE THEREFROM IN A CONE OF DISPERSION OF ABOUT 20* AND WHEREBY SAID METAL MASSES ARE CAPABLE OF DEEPER PENETRATION INTO AN AIRCRAFT TYPE TARGET THAN IS A PRIOR HIGH EXPLOSIVE PROJECTILE OF THE SAME CALIBER DUE TO THE PROJECTILE BODY REMAINING UNSHATTERED.
Claim 2
Dependent Claim
266 words
A PROJECTILE COMPRISING A CYLINDRICAL BODY, INCENDIARY MATERIAL CONTAINED WITHIN SAID BODY AND COMPRESSED UNDER AT LEAST A 5,000 P.S.I. PRESSURE AND CAPABLE OF BURNING FOR SUBSTANTIALLY 1,000 MILLISECONDS, A PLURALITY OF METAL MASSES AT LEAST AS HEAVY AS LEAD IN SAID INCENDIARY MATERIAL, A CONICAL NOSE ON SAID BODY, A STAB AND BALL ROTOR TYPE NOSE FUZE DETONATOR, AND A BOOSTER DETONATOR BETWEEN SAID BALL ROTOR DETONATOR AND SAID INCENDIARY MATERIAL FOR IGNITING THE LATTER, SAID BOOSTER DETONATOR BEING LOCATED IN A FRONT PORTION OF SAID CYLINDRICAL BODY AND SAID INCENDIARY MATERIAL, SAID BOOSTER DETONATOR BEING OF A STRENGTH TO BLOW SAID NOSE OFF SAID BODY ON IGNITION, SAID PROJECTILE BEING OF 20 MILLIMETER SIZE CONTAINING ABOUT 78 PELLETS EACH WEIGHING AT LEAST ABOUT AS MUCH AS A LEAD SHORT OF .177 INCH DIAMETER, ABOUT 75 GRAINS OF AN INCENDIARY MATERIAL CONTAINING ABOUT 98% OF ZIRCONIUM HAVING A PARTICLE SIZE OF 20 TO 60 MESH AND ABOUT 1% BARIUM NITRATE WITH ABOUT 1% OF A MIXTURE OF A 50-50 ALLOY OF MAGNESIUM AND ALUMINUM, WHEREBY ON REDUCTION IN VELOCITY OF SAID BODY, THE NOSE IS BLOWN AWAY QUICKLY AND THE INCENDIARY AND METAL MASSES ARE GUIDED FROM SAID BODY AS A BURNING AGGLOMERATED MASS WHILE SAID BODY IS OF A THICKNESS TO BE UNSHATTERED AS SAID BURNING INCENDIARY AND ITS METAL MASSES ISSUE THEREFROM IN A CONE OF DISPERSION OF ABOUT 20* AND WHEREBY SAID METAL MASSES ARE CAPABLE OF DEEPER PENETRATION INTO AN AIRCRAFT TYPE TARGET THAN IS A PRIOR HIGH EXPLOSIVE PROJECTILE OF THE SAME CALIBER DUE TO THE PROJECTILE BODY REMAINING UNSHATTERED.
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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) | 1971-02-26 | 1971-08-28 | 1972-02-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-02-26 | 1975-08-28 | 1976-02-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-02-26 | 1979-08-28 | 1980-02-27 | $7700.00 | Window Closed / Lapsed |