US3724385A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fuze having a pneumatic and inertia arming system
Assignee: United States Department of the Navy
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Filing: 1971-09-20
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Granted: 1973-04-03
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Expires: 1991-09-20
Abstract
Abstract A fuze for a pyrotechnic device having a firing pin for detonating a primer. An inertia sleeve is provided for preventing forward movement of the firing pin until a pneumatic latch is operated by the pressure supplied by a launching force. A borerider pin is also provided for preventing detonation of the primer while the fuze is inside a launcher barrel.
Inventors
- 👤 B Beatty
- 👤 Grange D La
- 👤 G Butts
- 👤 S Herold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:32
CPC Classifications
F; F42; F42C; F42C15/00; F42C15/20; F42C15/21; F42C15/24; F42C15/28; F42C15/30
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
181 words
A fuze for a pyrotechnic device comprising, a housing having first and second longitudinally extending parallel bores, a setback slide slidably positioned in said first longitudinally extending bore, said setback slide having a reduced diameter portion, a pneumatic button slidably positioned in said second longitudinally extending bore, said pneumatic button having an annular groove in its periphery, a firing pin slidably mounted within said setback slide, spring means for actuating said firing pin, releasable means for locking said firing pin in said setback slide, a borerider pin releasably connected to said setback slide and having means for preventing actuation of said firing pin, a primer ignitable by said firing pin, and a locking ball in said housing engageable with said reduced diameter portion of said setback slide for locking said setback slide in said housing, said locking ball being receivable in said annular groove of said pneumatic button for unlocking said setback slide whereby said firing pin is actuated upon forward movement of said pneumatic button, then rearward movement of said setback slide, followed by forward movement of said setback slide.
Claim 2
Dependent Claim
181 words
A fuze for a pyrotechnic device comprising, a housing having first and second longitudinally extending parallel bores, a setback slide slidably positioned in said first longitudinally extending bore, said setback slide having a reduced diameter portion, a pneumatic button slidably positioned in said second longitudinally extending bore, said pneumatic button having an annular groove in its periphery, a firing pin slidably mounted within said setback slide, spring means for actuating said firing pin, releasable means for locking said firing pin in said setback slide, a borerider pin releasably connected to said setback slide and having means for preventing actuation of said firing pin, a primer ignitable by said firing pin, and a locking ball in said housing engageable with said reduced diameter portion of said setback slide for locking said setback slide in said housing, said locking ball being receivable in said annular groove of said pneumatic button for unlocking said setback slide whereby said firing pin is actuated upon forward movement of said pneumatic button, then rearward movement of said setback slide, followed by forward movement of said setback slide.
Claim 3
Dependent Claim
59 words
A fuze for a pyrotechnic device as set forth in claim 1 wherein said releasable means for locking said firing pin in said setback slide comprises a second locking ball engageable with the forward end of said firing pin, and a hole in said housing for receiving a portion of said second locking ball thereby unlocking said firing pin.
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) | 1976-04-02 | 1976-10-02 | 1977-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-02 | 1980-10-02 | 1981-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-02 | 1984-10-02 | 1985-04-03 | $7700.00 | Window Closed / Lapsed |