US3797393A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Exploding wire fuse component
Assignee: Government of France
•
Filing: 1972-06-07
•
Granted: 1974-03-19
•
Expires: 1992-06-07
Abstract
Abstract A component for an exploding wire fuse comprising a ceramic body having a pair of laterally spaced metallic pins mounted therein. One of the pins extends only partially into the ceramic body and a metallic adjusting pin is mounted within the ceramic body coaxial with that pin. An adjustable gap is provided between the coaxial pins to permit adjustment during assembly of the threshold potential for energizing the fuse.
Inventors
- 👤 V Marchandise
- 👤 E Signoret
- 👤 G Bal
- 👤 L Barilero
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 08:29
CPC Classifications
F; F42; F42B; F42B3/00; F42B3/10; F42B3/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
166 words
A component for an exploding wire fuse comprising: a hollow metallic body; b. a ceramic body mounted within said metallic body; c a pyrotechnic charge and an exploding wire fuse in contact therewith, within said metallic body; d first and second parallel metallic pins mounted within said ceramic body and adapted to be connected to a voltage source; e a hollow metallic sleeve mounted in said ceramic body provided with a tapped bore having a longitudinal axis coaxial with that of said first pin; and f a threaded metallic adjustable pin screwed in said bore, one end of said adjustable pin being adjustably spaced from an end of said first metallic pin to provide a spark-gap therebetween, an ignition and testing-circuit being established through said first metallic pin, said gap, said adjustable pin, said exploding wire and said second metallic pin, the accurate potential threshold of said gap being set by connecting a power source to the ends of said circuit and rotating said adjustable pin.
Claim 2
Dependent Claim
166 words
A component for an exploding wire fuse comprising: a hollow metallic body; b. a ceramic body mounted within said metallic body; c a pyrotechnic charge and an exploding wire fuse in contact therewith, within said metallic body; d first and second parallel metallic pins mounted within said ceramic body and adapted to be connected to a voltage source; e a hollow metallic sleeve mounted in said ceramic body provided with a tapped bore having a longitudinal axis coaxial with that of said first pin; and f a threaded metallic adjustable pin screwed in said bore, one end of said adjustable pin being adjustably spaced from an end of said first metallic pin to provide a spark-gap therebetween, an ignition and testing-circuit being established through said first metallic pin, said gap, said adjustable pin, said exploding wire and said second metallic pin, the accurate potential threshold of said gap being set by connecting a power source to the ends of said circuit and rotating said adjustable pin.
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) | 1977-03-18 | 1977-09-17 | 1978-03-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-18 | 1981-09-17 | 1982-03-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-18 | 1985-09-17 | 1986-03-19 | $7700.00 | Window Closed / Lapsed |