Patent US3703144A successfully refreshed from Google Patents.
US3703144A
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Delay composition and device
Assignee: Space Ordnance Systems Inc
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Filing: 1969-09-16
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Granted: 1972-11-21
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Expires: 1989-09-16
Abstract
Abstract The disclosed embodiment of the present invention is a pyrotechnic mixture of a fuel and an oxidizing agent having a predetermined burning rate, thereby forming a delay composition. The fuel consists of zirconium and the oxidizing agent consists of molybdenum trioxide, both of which are in a finely divided form and in intimate admixture, and are present in proportions of about 1/3 to about 2 moles of molybdenum trioxide per mole of zirconium. This composition provides a time delay when employed in a train of pyrotechnic materials. One embodiment of such a train of materials includes a column of the delay composition positioned between corresponding ends of two deflagrating cords.
Inventors
- 👤 William H Colburn Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 05:06
CPC Classifications
C; C06; C06B; C06B33/00; C06C; C06C5/00; C06C5/06
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
30 words
A composition comprising molybdenum trioxide and zirconium, said molybdenum trioxide and zirconium being present in proportions of about one-third mole to two moles of molybdenum trioxide per mole of zirconium.
Claim 2
Dependent Claim
30 words
A composition comprising molybdenum trioxide and zirconium, said molybdenum trioxide and zirconium being present in proportions of about one-third mole to two moles of molybdenum trioxide per mole of zirconium.
Claim 3
Dependent Claim
23 words
A composition as defined in claim 1, wherein said molybdenum trioxide and zirconium are in a finally divided form and in intimate admixture.
Claim 4
Dependent Claim
25 words
A composition as defined in claim 1, wherein said molybdenum trioxide and zirconium are present in proportions of approximately 50 percent by weight of each.
Claim 5
Dependent Claim
47 words
A delay device comprising a housing, a delay composition mounted in said housing and formed of molybdenum trioxide and zirconium in proportions of about 1/3 to 2 moles of molybdenum trioxide per mole of zirconium, and means for initiating combustion at one end of said delay composition.
Claim 6
Dependent Claim
47 words
A delay device comprising a housing, a delay composition mounted in said housing and formed of molybdenum trioxide and zirconium in proportions of about 1/3 to 2 moles of molybdenum trioxide per mole of zirconium, and means for initiating combustion at one end of said delay composition.
Claim 7
Dependent Claim
31 words
A delay device as defined in claim 4, wherein said delay composition has a compactness achieved by being pressed into said housing with a pressure of approximately 20,000 to 80,000 psi.
Claim 8
Dependent Claim
20 words
A delay device as defined in claim 4, wherein said initiating means is in intimate contact with said delay composition.
Claim 9
Dependent Claim
24 words
A delay device as defined in claim 4, further including another delay composition mounted in said housing immediately adjacent said first mentioned delay composition.
Claim 10
Dependent Claim
22 words
A delay device as defined in claim 7, wherein said initiating means is in intimate contact with said first mentioned delay composition.
Claim 11
Dependent Claim
17 words
A Delay device as defined in claim 4, wherein said initiating means includes a first deflagrating cord.
Claim 12
Dependent Claim
29 words
A delay device as defined in claim 9, further including a second deflagrating cord, one end of which is mounted adjacent to the other end of said delay composition.
References Cited (Backward Citations)
US3329539A
Cited
US3297503A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-11-21 | 1976-05-22 | 1976-11-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-11-21 | 1980-05-22 | 1980-11-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-11-21 | 1984-05-22 | 1984-11-21 | $7700.00 | Window Closed / Lapsed |