Patent US4094711A successfully refreshed from Google Patents.
US4094711A
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US
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Tracer and composition
Assignee: Lanteris Space LLC
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Filing: 1977-09-01
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Granted: 1978-06-13
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Expires: 1997-09-01
Abstract
Abstract Improved tracer rounds and compositions therefor comprising a rubbery, particulate mixture having magnesium, polytetrafluoroethylene and advantageously other ingredients coated with copolymer of hexafluoropropylene and vinylidenefluoride, optionally containing ingredients such as carbon black, and providing advantages in preparation (e.g., lower consolidation pressures) and use (e.g., more uniform burning after ignition).
Inventors
- 👤 Jawaharlal Ramnarace
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:23
CPC Classifications
C; C06; C06B; C06B45/00; C06B45/18; C06B45/36; C06B27/00; C06C; C06C15/00
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
64 words
An improved tracer round comprising a projectile with a cavity containing tracer compositions wherein the tracer composition comprises a consolidated rubbery particulate tracer mixture which comprises: (A) about 30-60 parts by weight magnesium; (B) about 10-40 parts by weight polytetrafluoroethylene; and (C) about 10-25 parts by weight copolymer of hexafluoropropylene and vinylidenefluoride, wherein a coating on (A) and (B) comprises the copolymer of (C).
Claim 2
Dependent Claim
64 words
An improved tracer round comprising a projectile with a cavity containing tracer compositions wherein the tracer composition comprises a consolidated rubbery particulate tracer mixture which comprises: (A) about 30-60 parts by weight magnesium; (B) about 10-40 parts by weight polytetrafluoroethylene; and (C) about 10-25 parts by weight copolymer of hexafluoropropylene and vinylidenefluoride, wherein a coating on (A) and (B) comprises the copolymer of (C).
Claim 3
Dependent Claim
16 words
The tracer round in accordance with claim 1, wherein the tracer composition comprises an igniter mix.
Claim 4
Dependent Claim
46 words
The tracer round in accordance with claim 2, wherein the igniter mix comprises: (A') about 50-70 parts by weight magnesium; (B') about 5-20 parts by weight polytetrafluoroethylene; (C') about 5-20 parts by weight copolymer of hexafluoropropylene and vinylidenefluoride; and (D') about 1-15 parts by weight graphite.
Claim 5
Dependent Claim
31 words
The tracer round in accordance with claim 1, wherein the tracer mixture comprises: (D) about 5-30 parts by weight metal salt oxidizer; and (E) 0-10 parts by weight oxidizable particulate carbon.
Claim 6
Dependent Claim
14 words
The tracer round in accordance with claim 4, wherein the oxidizer comprises strontium nitrate.
Claim 7
Dependent Claim
63 words
A rubbery particulate tracer mixture, which comprises: (A) about 40-50 parts by weight magnesium; (B) about 10-30 parts by weight polytetrafluoroethylene; (C) about 5-25 parts by weight copolymer of hexafluoropropylene and vinylidenefluoride; (D) about 10-25 parts by weight metal nitrate oxidizer; and (E) about 1-10 parts by weight carbon black, wherein a coating for (A), (B) and (D) comprises the copolymer of (C).
Claim 8
Dependent Claim
63 words
A rubbery particulate tracer mixture, which comprises: (A) about 40-50 parts by weight magnesium; (B) about 10-30 parts by weight polytetrafluoroethylene; (C) about 5-25 parts by weight copolymer of hexafluoropropylene and vinylidenefluoride; (D) about 10-25 parts by weight metal nitrate oxidizer; and (E) about 1-10 parts by weight carbon black, wherein a coating for (A), (B) and (D) comprises the copolymer of (C).
Claim 9
Dependent Claim
43 words
A method for reducing the drag on a missile moving in an oxygen containing atmosphere while providing continuous illumination of a path of the moving missile, which comprises igniting the tracer mixture of claim 6 in the tracer cavity of the moving missile.
References Cited (Backward Citations)
US3891482A
Cited
US3988990A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-06-12 | 1981-12-12 | 1982-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-06-12 | 1985-12-12 | 1986-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-06-12 | 1989-12-12 | 1990-06-13 | $7700.00 | Window Closed / Lapsed |