US3970003A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pyrophoric flare
Assignee: Avco Corp
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Filing: 1974-10-16
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Granted: 1976-07-20
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Expires: 1994-10-16
Abstract
Abstract The invention is directed to a pyrophoric flare comprising a normally closed container containing a pyrophoric substance. A perforated cylinder may be immersed in the pyrophoric substance to meter the flow of the pyrophoric substance into the atmosphere. The container is configured to completely or partially fragment when activated to release the pyrophoric substance into the atmosphere.
Inventors
- 👤 Frederick R. Hayward
- 👤 L. James Larson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 16:07
CPC Classifications
F; F42; F42B; F42B4/00; F42B4/26
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
62 words
A pyrophoric flare comprising: a. a frangible container; b. a pyrophoric substance contained in said container; c. means for fragmenting the container for releasing the pyrophoric substance to the atmosphere; and d. measuring means for containing a portion of said pyrophoric substance and for gradually releasing measured amounts of said pyrophoric substance into the atmosphere to extend the duration of the flare.
Claim 2
Dependent Claim
62 words
A pyrophoric flare comprising: a. a frangible container; b. a pyrophoric substance contained in said container; c. means for fragmenting the container for releasing the pyrophoric substance to the atmosphere; and d. measuring means for containing a portion of said pyrophoric substance and for gradually releasing measured amounts of said pyrophoric substance into the atmosphere to extend the duration of the flare.
Claim 3
Dependent Claim
15 words
A pyrophoric flare as described in claim 1 wherein the perforated container is a cylinder.
Claim 4
Dependent Claim
17 words
A pyrophoric flare as described in claim 1 wherein said container is frangible into fragments substantially instantaneously.
Claim 5
Dependent Claim
59 words
A pyrophoric flare as described in claim 3 which includes in addition a perforated container immersed in the pyrophoric substance; means for increasing the viscosity of the pyrophoric substance to enable said pyrophoric substance to accept additives in suspension; and a normally immiscible or non-suspendible additive distributed throughout the pyrophoric substance for modifying the characteristics of the resulting flare.
Claim 6
Dependent Claim
36 words
A pyrophoric flare as defined in claim 4 which includes in addition means for converting the pyrophoric substance to a gel and additives for modifying the characteristics of the resulting flare distributed throughout the pyrophoric substance.
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) | 1979-07-20 | 1980-01-19 | 1980-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-07-20 | 1984-01-19 | 1984-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-07-20 | 1988-01-19 | 1988-07-20 | $7700.00 | Window Closed / Lapsed |