Patent US2823105A successfully refreshed from Google Patents.
US2823105A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Smoke tracer composition
Assignee: Individual
•
Filing: 1955-01-27
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Granted: 1958-02-11
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Expires: 1975-01-27
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.
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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 |