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Patent US3938438A successfully refreshed from Google Patents.
US3938438A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure-armed explosive apparatus
Assignee: United States Department of the Navy
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Filing: 1971-04-12
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Granted: 1976-02-17
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Expires: 1991-04-12
Abstract
Abstract An air droppable sealed warhead cannister capable of housing a plurality ofomblets, each bomblet having a pressure-sensitive fuze capable of being controlled by the presence and absence of a predetermined pressure in the cannister.
Inventors
- 👤 Matthew E. Anderson
- 👤 Stephen L. Redmond
- 👤 John W. Horky
- 👤 Leo V. Krolak
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 23:25
CPC Classifications
F; F42; F42B; F42B12/00; F42B12/02; F42B12/36; F42B12/56; F42B12/58; F42C; F42C15/00; F42C15/32
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
141 words
An air-droppable sealed warhead cannister containing a plurality of bomblets each having a pressure sensitive explosive fuze provided with a fluid inlet port: means including a power source connected to the cannister for pressurizing said cannister in flight with a fluid at a predetermined event by admitting fluid pressure through said port to activate the fuzes to commit-to-arm condition; means for fragmenting said cannister at a second predetermined event to disperse said bomblets into the atmosphere, and exhaust said pressure in the fuze to the atmosphere through said inlet port; means for advancing the fuzes to an armed position when said pressure is exhausted; whereby all of said fuzes can be committed-to-arm simultaneously after the cannister has reached a safe distance from the launching platform, the fuzes being advanced to armed conditions when said cannister is fragmented and the bomblets dispersed.
Claim 2
Dependent Claim
141 words
An air-droppable sealed warhead cannister containing a plurality of bomblets each having a pressure sensitive explosive fuze provided with a fluid inlet port: means including a power source connected to the cannister for pressurizing said cannister in flight with a fluid at a predetermined event by admitting fluid pressure through said port to activate the fuzes to commit-to-arm condition; means for fragmenting said cannister at a second predetermined event to disperse said bomblets into the atmosphere, and exhaust said pressure in the fuze to the atmosphere through said inlet port; means for advancing the fuzes to an armed position when said pressure is exhausted; whereby all of said fuzes can be committed-to-arm simultaneously after the cannister has reached a safe distance from the launching platform, the fuzes being advanced to armed conditions when said cannister is fragmented and the bomblets dispersed.
Claim 3
Dependent Claim
33 words
The combination of claim 1 wherein a pressure-releasable detent is provided in each fuze normally engaging said inlet port for latching said fuze in a safe condition until released by the fluid pressure.
Claim 4
Dependent Claim
33 words
The combination of claim 2 wherein a second detent is provided to engage said fluid port when the fuze is advanced to the armed position to lock said fuze in said armed position.
Claim 5
Dependent Claim
46 words
The combination of claim 1 wherein means are provided in the fuze to meter the exhausting fluid pressure to the atmosphere to provide a predetermined time delay in each fuze to insure safe dispersal of the bomblets from each other before the fuzes are finally armed.
Claim 6
Dependent Claim
43 words
The combination of claim 1 wherein the fuze is provided with a firing mechanism, a spring member locking said fuze in a safe position, said spring member being depressed when said fuze is advanced to the armed position to unlock said firing mechanism.
References Cited (Backward Citations)
US2809583A
Cited
US2926609A
Cited
US2996985A
Cited
US3170398A
Cited
US3318241A
Cited
US3453960A
Cited
US3646889A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-02-16 | 1979-08-18 | 1980-02-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-02-16 | 1983-08-18 | 1984-02-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-02-16 | 1987-08-18 | 1988-02-17 | $7700.00 | Window Closed / Lapsed |