US3713392A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Explosive lead plug
Assignee: United States Department of the Navy
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Filing: 1971-02-09
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Granted: 1973-01-30
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Expires: 1991-02-09
Abstract
Abstract A metal fuse extension with an explosive-filled channel passing through it. The channel is small on one end and large on the other end. The small end is adjacent a fuse and the large end is adjacent a burster charge. Upon detonation of the explosive material in the channel, the small end is sealed closed due to metal flow, thus preventing a backfire of the burster charge through the small end.
Inventors
- 👤 K Parsons
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 10:44
CPC Classifications
F; F42; F42B; F42B12/00; F42B12/02; F42B12/36; F42B12/46; F42B12/50; F42B12/52; F42C; F42C19/00; F42C19/08; F42C19/0838
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
108 words
In an explosive device including a burster charge and a fuse, fuse extension means situated between and contiguous said charge and said fuse; said extension means comprising: a tubular body of flowable metal having a channel extending therethrough and communicating said charge with said fuse; explosive material filling said channel; a portion of said channel near the middle of said channel being conical; the larger end of said channel being in contact with said charge; the smaller end of said channel being in contact with said fuse; whereby detonation of said explosive material causes said flowable metal to flow in such a manner as to seal said channel.
Claim 2
Dependent Claim
108 words
In an explosive device including a burster charge and a fuse, fuse extension means situated between and contiguous said charge and said fuse; said extension means comprising: a tubular body of flowable metal having a channel extending therethrough and communicating said charge with said fuse; explosive material filling said channel; a portion of said channel near the middle of said channel being conical; the larger end of said channel being in contact with said charge; the smaller end of said channel being in contact with said fuse; whereby detonation of said explosive material causes said flowable metal to flow in such a manner as to seal said channel.
Claim 3
Dependent Claim
108 words
In an explosive device including a burster charge and a fuse, fuse extension means situated between and contiguous said charge and said fuse; said extension means comprising: a tubular body of flowable metal having a channel extending therethrough and communicating said charge with said fuse; explosive material filling said channel; a portion of said channel near the middle of said channel being conical; the larger end of said channel being in contact with said charge; the smaller end of said channel being in contact with said fuse; whereby detonation of said explosive material causes said flowable metal to flow in such a manner as to seal said channel.
Claim 4
Dependent Claim
108 words
In an explosive device including a burster charge and a fuse, fuse extension means situated between and contiguous said charge and said fuse; said extension means comprising: a tubular body of flowable metal having a channel extending therethrough and communicating said charge with said fuse; explosive material filling said channel; a portion of said channel near the middle of said channel being conical; the larger end of said channel being in contact with said charge; the smaller end of said channel being in contact with said fuse; whereby detonation of said explosive material causes said flowable metal to flow in such a manner as to seal said channel.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-01-30 | 1976-07-31 | 1977-01-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-30 | 1980-07-31 | 1981-01-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-30 | 1984-07-31 | 1985-01-30 | $7700.00 | Window Closed / Lapsed |