US4238254A
Expired / Lapsed
US
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Pyrotechnic smoke charge containing guanidine nitrate
Assignee: Buck Chemisch Technische Werke GmbH and Co
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Filing: 1979-05-07
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Granted: 1980-12-09
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Expires: 1999-05-07
Abstract
Abstract A pyrotechnic smoke charge which comprises guanidinium nitrate and (a) chlorohydrocarbons and a metal powder, of (b) red phosphorous, which can be partially replaced by a chlorohydrocarbon, and wherein said charge may optionally contain a small amount of a reaction regulating agent.
Inventors
- 👤 Georg Prahauser
- 👤 Alois Schiessl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 09:06
CPC Classifications
C; C06; C06B; C06B39/00; C06B39/06; C06B27/00; C06D; C06D3/00
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
42 words
A pyrotechnic smoke charge which comprises guanidine nitrate and (a) chlorohydrocarbons and a metal powder or (b) red phosphorus, which can be partially replaced by a chlorohydrocarbon, and wherein said charge may optionally contain a small amount of a reaction regulating agent.
Claim 2
Dependent Claim
42 words
A pyrotechnic smoke charge which comprises guanidine nitrate and (a) chlorohydrocarbons and a metal powder or (b) red phosphorus, which can be partially replaced by a chlorohydrocarbon, and wherein said charge may optionally contain a small amount of a reaction regulating agent.
Claim 3
Dependent Claim
37 words
A smoke charge as in claim 1, wherein the amount of chlorohydrocarbon in (a) for the formation of metal chloride from the metal present, ranges from about the stoichiometrically required amount up to about a 15% excess.
Claim 4
Dependent Claim
28 words
A smoke charge as in claim 1, wherein the amount of guanidine nitrate in (a) constitutes at least about one mole to three chlorine atoms of the chlorohydrocarbon.
Claim 5
Dependent Claim
32 words
A smoke charge of any of claims 1,2 or 3, which contains about 34 wt.% hexachloroethane, about 22 wt.% zinc powder, about 8 wt.% zinc oxide and about 36 wt.% quanidine nitrate.
Claim 6
Dependent Claim
22 words
A smoke charge as in claim 1, wherein in (b) it contains red phosphorus and about 30 to 50 wt.% guanidine nitrate.
Claim 7
Dependent Claim
19 words
A smoke charge as in claim 5, which contains red phosphorus and about 35 to 45 wt.% guanidine nitrate.
Claim 8
Dependent Claim
21 words
A smoke charge as in claim 5, which contains about 60 wt.% of red phosphorus and about 40 wt.% guanidine nitrate.
Claim 9
Dependent Claim
22 words
A smoke charge of any of claims 5, 6 or 7, which contains up to about 25 wt.% of a customary binder.
Claim 10
Dependent Claim
23 words
The pyrotechnic smoke charge of claim 1, wherein said chlorohydrocarbon is selected from the group consisting of saturated aliphatic chlorohydrocarbons and aromatic chlorohydrocarbons.
Claim 11
Dependent Claim
25 words
The pyrotechnic smoke charge of claim 1, wherein said chlorohydrocarbon is selected from the group consisting of dichloromethane, carbontetrachloride, trichloroethylene, tetrachloroethane, hexachloroethane, pentachlorobenzene, and hexachlorobenzene.
Claim 12
Dependent Claim
27 words
The pyrotechnic smoke charge of claim 1, wherein said metal powder is selected from the group consisting of zinc powder, aluminum powder, titanium powder and silicon powder.
Claim 13
Dependent Claim
35 words
The pyrotechnic smoke charge of claim 11, wherein said zinc powder is replaced by a metal oxide powder selected from the group consisting of zinc oxide, copper oxide, iron oxide, manganese dioxide, and titanium dioxide.
References Cited (Backward Citations)
US3607472A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-12-09 | 1984-06-09 | 1984-12-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-12-09 | 1988-06-09 | 1988-12-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-12-09 | 1992-06-09 | 1992-12-09 | $7700.00 | Window Closed / Lapsed |