Patent US4011816A successfully refreshed from Google Patents.
US4011816A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Continuous line confined detonating fuse to provide a series of work pulses (U)
Assignee: United States Department of the Navy
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Filing: 1971-10-06
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Granted: 1977-03-15
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Expires: 1991-10-06
Abstract
Abstract A continuous line confined detonating fuse provides localized impulses cale of performing work. The continuous line is comprised of a metal-encased secondary explosive covered with layers of polyethylene, nylon, fiber glass and polyurethane. The gaseous by-product of the detonatable material is confined by removing a plurality of selected sections of the coverings and replacing them with elastomeric segments.
Inventors
- 👤 Vernon L. Smith
- 👤 Jack F. Hecht, Sr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 16:36
CPC Classifications
F; F42; F42B; F42B15/00; F42B15/36; F42B15/38
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
102 words
A detonating fuse comprising: a. a continuous line of metal encased secondary explosive covered with at least one layer of covering means; b. at least one segment of said covering means being removed from said fuse thereby exposing said metal; c. at least one detonation confining means positioned over said at least one segment, said confining means consisting of a molded elastomeric segment located and encompassing said removed segments of said coverings; whereby d. detonation of said fuse causing said at least one detonation confining means to expand outward and retain gases within said at least one segment produced by said detonation.
Claim 2
Dependent Claim
102 words
A detonating fuse comprising: a. a continuous line of metal encased secondary explosive covered with at least one layer of covering means; b. at least one segment of said covering means being removed from said fuse thereby exposing said metal; c. at least one detonation confining means positioned over said at least one segment, said confining means consisting of a molded elastomeric segment located and encompassing said removed segments of said coverings; whereby d. detonation of said fuse causing said at least one detonation confining means to expand outward and retain gases within said at least one segment produced by said detonation.
Claim 3
Dependent Claim
23 words
The device recited in claim 1 wherein said confining means comprises a plurality of confining means over said removed segment of said covering.
Claim 4
Dependent Claim
15 words
The device recited in claim 1 wherein a half section of said covering is removed.
Claim 5
Dependent Claim
17 words
The device recited in claim 1 wherein less than a half section of said covering is removed.
Claim 6
Dependent Claim
24 words
The device in claim 1 wherein said covering means comprises is seven layers of fiber glass sleeving and a polyurthane sleeving forms the covering.
Claim 7
Dependent Claim
24 words
The device in claim 5 wherein the said coverings are provided with a plurality of cut-away sections to accept a gaseous by-product confining means.
Claim 8
Dependent Claim
27 words
The device in claim 6 wherein said confining means is castable spool-shaped elastomeric segment designed to cover the said sections and enclose a metal encased secondary explosive.
Claim 9
Dependent Claim
12 words
The device in claim 7 wherein said secondary explosive is cyclotrimethylene trinitramine.
Claim 10
Dependent Claim
28 words
The device in claim 8 wherein said secondary explosive is confined by a plurality of elastomeric segments encompassing said secondary explosive and sequentially located along said secondary explosive.
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) | 1980-03-14 | 1980-09-13 | 1981-03-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-03-14 | 1984-09-13 | 1985-03-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-03-14 | 1988-09-13 | 1989-03-15 | $7700.00 | Window Closed / Lapsed |