Patent US3370536A successfully refreshed from Google Patents.
← Back to Patent Explorer
US3370536A Expired / Lapsed US ⏱️ 0.0 years remaining

Incendiary projectile

Assignee: United States Department of the Army
•
Filing: 1961-10-27
•
Granted: 1968-02-27
•
Expires: 1981-10-27
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

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.

References Cited (Backward Citations)

US1039850A Cited
US1153513A Cited
US1481798A Cited
US2446082A Cited
US2669182A Cited
DE925213C Cited
US2780995A Cited

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

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag