Patent US4100000A successfully refreshed from Google Patents.
US4100000A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Prilled explosive composition
Assignee: Department of National Defence
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Filing: 1976-10-26
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Granted: 1978-07-11
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Expires: 1996-10-26
Abstract
Abstract A free-flowing explosive composition exhibiting high brisance and high blasting power is described, comprising 35-80% by weight TNT, 10-30% by weight aluminum and 0-45% by weight RDX, in spheroidal prill form.
Inventors
- 👤 Thomas S. Sterling
- 👤 Jean-Yves Belanger
- 👤 Kenneth S. Kalman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 07:35
CPC Classifications
C; C06; C06B; C06B21/00; C06B21/0033; C06B21/0066; C06B25/00; C06B25/34; C06B45/00; C06B45/18; C06B45/36
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
24 words
A free-flowing, high-density, water-resistant explosive composition, comprising 35-80% by weight trinitrotoluene, 10-30% by weight aluminum and 0-45% by weight cyclonite, in spheroidal prill form.
Claim 2
Dependent Claim
24 words
A free-flowing, high-density, water-resistant explosive composition, comprising 35-80% by weight trinitrotoluene, 10-30% by weight aluminum and 0-45% by weight cyclonite, in spheroidal prill form.
Claim 3
Dependent Claim
19 words
An explosive composition according to claim 1, wherein the prill diameters are in the range of about 1-5 mm.
Claim 4
Dependent Claim
16 words
An explosive composition according to claim 2, wherein the average prill diameter is about 3 mm.
Claim 5
Dependent Claim
42 words
an explosive composition according to claim 1 wherein the absolute density of the prills is in the range of about 1.83 to 2.02 g/cm 3 and wherein the bulk density is in the range of about 1.13 to 1.26 g/cm 3 .
Claim 6
Dependent Claim
19 words
An explosive composition according to claim 1 wherein the spheroidal prills are coated with a thin film of graphite.
Claim 7
Dependent Claim
17 words
An explosive composition according to claim 1, comprising 80% by weight trinitrotoluene and 20% by weight aluminum.
Claim 8
Dependent Claim
21 words
An explosive composition according to claim 1, comprising 40% by weight trinitrotoluene, 40% by weight cyclonite and 20% by weight aluminum.
Claim 9
Dependent Claim
13 words
An explosive composition according to claim 7 including a thin coating of graphite.
Claim 10
Independent Claim
67 words
A method for the manufacture of a free flowing high-density, water resistant explosive composition, said explosive composition comprising 35-80% by weight TNT, 10-30% by weight aluminum, and 0-45% by weight RDX, in spheroidal prill form, comprising: (a) forming a molten mixture of said explosive composition, (b) forming droplets of the molten mixture, (c) solidifying the droplets by cooling to form spheroidal prills, and (d) collecting the prills.
Claim 11
Independent Claim
67 words
A method for the manufacture of a free flowing high-density, water resistant explosive composition, said explosive composition comprising 35-80% by weight TNT, 10-30% by weight aluminum, and 0-45% by weight RDX, in spheroidal prill form, comprising: (a) forming a molten mixture of said explosive composition, (b) forming droplets of the molten mixture, (c) solidifying the droplets by cooling to form spheroidal prills, and (d) collecting the prills.
Claim 12
Dependent Claim
21 words
A method for the manufacture of an explosive composition according to claim 9, including the additional step of graphitizing the prills.
Claim 13
Dependent Claim
37 words
A method for the manufacture of an explosive composition according to claim 10, wherein the spheroidal prills aree graphitized by plunging and shaking dry prills in a colloidal suspension of graphite in isopropanol for about one minute.
Claim 14
Dependent Claim
20 words
A method according to claim 9 wherein the molten mixture of the explosive composition is maintained at about 83°-86° C.
Claim 15
Dependent Claim
15 words
A method according to claim 9 wherein the explosive composition comprises 80% by weight aluminum.
Claim 16
Dependent Claim
24 words
A method according to claim 9 wherein the explosive composition comprises 40% by weight TNT, 40% by weight RDX and 20% by weight aluminum.
References Cited (Backward Citations)
US3882208A
Cited
US3754061A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-07-10 | 1982-01-09 | 1982-07-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-07-10 | 1986-01-09 | 1986-07-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-07-10 | 1990-01-09 | 1990-07-11 | $7700.00 | Window Closed / Lapsed |