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US2823105A Expired / Lapsed US ⏱️ 0.0 years remaining

Smoke tracer composition

Assignee: Individual
•
Filing: 1955-01-27
•
Granted: 1958-02-11
•
Expires: 1975-01-27
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Abstract

No abstract record available.

Inventors

  • 👤 Stevenson Thomas
  • 👤 Winston W Cavell

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-05 17:59
CPC Classifications
C; C06; C06D; C06D3/00

Claims Analysis

Total Claims: 2
Claim 1
Independent Claim 229 words
1. A SMOKE TRACER CHLORATE-FREE COMPOSITION WHICH WILL BE READILY IGNITABLE WITHIN ONE-HUNDREDTH OF A SECOND BY A PROPELLANT USED TO DRIVE ANY STANDARD PROJECTILE FORWARD AND WHICH WILL WITHSTAND COMPRESSION WHEN PLACED INSIDE OF A PROJECTILE BY A FORCE GREATER THAN THAT DEVELOPED BY THE THRUST OF THE PROPALLANT AND WHICH HAS BEEN COMPRESSED UNDER ABOUT 110,000 P.S.I. DURING LOADING WITHOUT UNDERGOING IGNITION TO A POINT WHERE THE COMPOSITION HAS A DENSITY OF 2 GRMS./CC., THIS HIGH COMPRESSION SERVING TO PREVENT DISLODGEMENT OF THE COMPOSITION WHEN THE PROJECTILE IS FIRED, WHEREBY 5 TO 80 GRAINS OF THIS COMPOSITION WILL CAUSE A REARWARD TRAIL OF COLORED SMOKE WHICH IS SUFFICIENTLY VOLUMINOUS TO BE VISIBLE TO A GUNNER FIRING SAID PROJECTILE OVER AN ENTIRE RANGE OF AT LEAST 1,000 YARDS WHEN THE PROJECTILE IS IN FLIGHT FROM THE MUZZLE OF A GUN TO THE TARGET, THE COMPOSITION HAVING THE FURTHER PROPERTY OF RAPID IGNITION WITHOUT RAPID BURNING THE COMBINATION THEREWITH OF A COMPOSITION CONSISTING OF 50% TO 80% OF A PREROXIDE OF AN ALKALINE EARTH METAL SELECTED FROM THE GROUP CONSISTING OF BARIUM, STRONTIUM AND CALCIUM, 5% TO 20% OF CALCIUM RESINATE, AND 5% TO 25% OF AT LEAST ONE SUBLIMABLE DYE MATERIAL SELECTED FROM THE GROUP CONSISTING OF 1-METHYLAMINO-ANTHRAQUINONE, 1,4-DIMETHYLAMINOANTHRAQUINONE, ORTHO DIHYDROXY BENZENE KNOWN IN THE TRADE AS PYROCATECHOL; BIS (P-DIMETHYLAMINOPHENYL)-METHYLENIMINE HYDROCHLORIDE KNOWN IN THE TRADE AS AURAMINE DYE.
Claim 2
Dependent Claim 229 words
1. A SMOKE TRACER CHLORATE-FREE COMPOSITION WHICH WILL BE READILY IGNITABLE WITHIN ONE-HUNDREDTH OF A SECOND BY A PROPELLANT USED TO DRIVE ANY STANDARD PROJECTILE FORWARD AND WHICH WILL WITHSTAND COMPRESSION WHEN PLACED INSIDE OF A PROJECTILE BY A FORCE GREATER THAN THAT DEVELOPED BY THE THRUST OF THE PROPALLANT AND WHICH HAS BEEN COMPRESSED UNDER ABOUT 110,000 P.S.I. DURING LOADING WITHOUT UNDERGOING IGNITION TO A POINT WHERE THE COMPOSITION HAS A DENSITY OF 2 GRMS./CC., THIS HIGH COMPRESSION SERVING TO PREVENT DISLODGEMENT OF THE COMPOSITION WHEN THE PROJECTILE IS FIRED, WHEREBY 5 TO 80 GRAINS OF THIS COMPOSITION WILL CAUSE A REARWARD TRAIL OF COLORED SMOKE WHICH IS SUFFICIENTLY VOLUMINOUS TO BE VISIBLE TO A GUNNER FIRING SAID PROJECTILE OVER AN ENTIRE RANGE OF AT LEAST 1,000 YARDS WHEN THE PROJECTILE IS IN FLIGHT FROM THE MUZZLE OF A GUN TO THE TARGET, THE COMPOSITION HAVING THE FURTHER PROPERTY OF RAPID IGNITION WITHOUT RAPID BURNING THE COMBINATION THEREWITH OF A COMPOSITION CONSISTING OF 50% TO 80% OF A PREROXIDE OF AN ALKALINE EARTH METAL SELECTED FROM THE GROUP CONSISTING OF BARIUM, STRONTIUM AND CALCIUM, 5% TO 20% OF CALCIUM RESINATE, AND 5% TO 25% OF AT LEAST ONE SUBLIMABLE DYE MATERIAL SELECTED FROM THE GROUP CONSISTING OF 1-METHYLAMINO-ANTHRAQUINONE, 1,4-DIMETHYLAMINOANTHRAQUINONE, ORTHO DIHYDROXY BENZENE KNOWN IN THE TRADE AS PYROCATECHOL; BIS (P-DIMETHYLAMINOPHENYL)-METHYLENIMINE HYDROCHLORIDE KNOWN IN THE TRADE AS AURAMINE DYE.

References Cited (Backward Citations)

US1318074A Cited
US1319329A Cited
GB126394A Cited
US1708186A Cited
US1756255A Cited
US1708187A Cited
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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) 1961-02-10 1961-08-12 1962-02-11 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1965-02-10 1965-08-12 1966-02-11 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1969-02-10 1969-08-12 1970-02-11 $7700.00 Window Closed / Lapsed

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