Patent US2887370A successfully refreshed from Google Patents.
US2887370A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Non-corrosive percussion primer material
Assignee: Individual
•
Filing: 1957-02-12
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Granted: 1959-05-19
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Expires: 1977-02-12
Abstract
No abstract record available.
Inventors
- 👤 Reed E Donnard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:30
CPC Classifications
C; C06; C06B; C06B41/00; C06B41/02; C06B41/04; C06B41/06; Y; Y10; Y10S; Y10S149/00; Y10S149/11; Y10S149/114
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
128 words
AN IMPROVED NON-CORROSIVE PRIMER YIELDING A HEAT TRANSFER OF AN INTENSITY TO INGNITE DOUBLE BASE PROPELLANTS WITHOUT AT THE SAME TIME HAVING A GAS PRESSURE WHICH WILL CAUSE BREAK UP AND OVER IGNITION OF SINGLE BASE PROPELLANTS, CONSISTING ESSENTIALLY OF : ABOUT 30 TO 37% OF THE TOTAL WEIGHT OF THE MIXTURE OF LEAD STYPHANTE, AS A PRIMARY EXPLOSIVE, ABOUT 5 TO 10% LEAD DIOXIDE, AS A FIRST OXIDIZER; ABOUT 30 TO 35% BARIUM NIATRATE, AS A SECOND OXIDIZER; 3 TO 4% TELTRAZENE, AS A SENSITIZER; 3 TO 5% PENTAERYTHRITE TETRANITRATE, AS AN OXYGEN RICH EXPLOSIVE FOR RAISING THE GASEOUS FLAME TEMPERATURE; ABOUT 10 TO 15% ANTIMONY SULFIDE, AS A REDUCING AGENT; AND ABOUT 5 TO 10% ZIRCONIUM, HAVING A PARTICLE SIZE OF FROM ABOUT .030 TO .062MM.
Claim 2
Dependent Claim
128 words
AN IMPROVED NON-CORROSIVE PRIMER YIELDING A HEAT TRANSFER OF AN INTENSITY TO INGNITE DOUBLE BASE PROPELLANTS WITHOUT AT THE SAME TIME HAVING A GAS PRESSURE WHICH WILL CAUSE BREAK UP AND OVER IGNITION OF SINGLE BASE PROPELLANTS, CONSISTING ESSENTIALLY OF : ABOUT 30 TO 37% OF THE TOTAL WEIGHT OF THE MIXTURE OF LEAD STYPHANTE, AS A PRIMARY EXPLOSIVE, ABOUT 5 TO 10% LEAD DIOXIDE, AS A FIRST OXIDIZER; ABOUT 30 TO 35% BARIUM NIATRATE, AS A SECOND OXIDIZER; 3 TO 4% TELTRAZENE, AS A SENSITIZER; 3 TO 5% PENTAERYTHRITE TETRANITRATE, AS AN OXYGEN RICH EXPLOSIVE FOR RAISING THE GASEOUS FLAME TEMPERATURE; ABOUT 10 TO 15% ANTIMONY SULFIDE, AS A REDUCING AGENT; AND ABOUT 5 TO 10% ZIRCONIUM, HAVING A PARTICLE SIZE OF FROM ABOUT .030 TO .062MM.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-05-18 | 1962-11-17 | 1963-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-05-18 | 1966-11-17 | 1967-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-05-18 | 1970-11-17 | 1971-05-19 | $7700.00 | Window Closed / Lapsed |