Patent US4471697A successfully refreshed from Google Patents.
US4471697A
Expired / Lapsed
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Bidirectional slapper detonator
Assignee: ENERGY United States, Department of
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Filing: 1982-01-28
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Granted: 1984-09-18
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Expires: 2002-01-28
Abstract
Abstract The disclosure is directed to a bidirectional slapper detonator. One embodiment utilizes a single bridge circuit to detonate a pair of opposing initiating pellets. A line generator embodiment uses a plurality of bridges in electrical series to generate opposing cylindrical wavefronts.
Inventors
- 👤 Robert N. McCormick
- 👤 Melissa D. Boyd
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 20:11
CPC Classifications
F; F42; F42B; F42B3/00; F42B3/10; F42B3/12; F42B3/124
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
42 words
A bidirectional slapper detonator comprising: a bridge element sandwiched between two barrel holders; a sapphire barrel disposed in each barrel holder; a flyer between said bridge element and each of said barrels; and an initiating pellet adjacent each barrel and barrel holder.
Claim 2
Dependent Claim
42 words
A bidirectional slapper detonator comprising: a bridge element sandwiched between two barrel holders; a sapphire barrel disposed in each barrel holder; a flyer between said bridge element and each of said barrels; and an initiating pellet adjacent each barrel and barrel holder.
Claim 3
Dependent Claim
66 words
A birdirectional slapper detonator comprising: a plurality of bridge elements disposed in a line; a pair of barrel holders adjacent each of said bridge elements on opposite sides thereof; a sapphire barrel disposed in each of said barrel holders; a flyer disposed between each of said bridge elements and each of said barrels; and an initiating pellet adjacent each of said barrels and said barrel holders.
Claim 4
Dependent Claim
66 words
A birdirectional slapper detonator comprising: a plurality of bridge elements disposed in a line; a pair of barrel holders adjacent each of said bridge elements on opposite sides thereof; a sapphire barrel disposed in each of said barrel holders; a flyer disposed between each of said bridge elements and each of said barrels; and an initiating pellet adjacent each of said barrels and said barrel holders.
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) | 1987-09-18 | 1988-03-19 | 1988-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-09-18 | 1992-03-19 | 1992-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-09-18 | 1996-03-19 | 1996-09-18 | $7700.00 | Window Closed / Lapsed |