US3808972A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dual function bomb
Assignee: United States Department of the Navy
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Filing: 1969-11-25
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Granted: 1974-05-07
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Expires: 1989-11-25
Abstract
Abstract A dual function bomb combining anti-personnel and armor piercing capabilities in a single bomb and capable of discriminating between targets. A frangible member in the bomb nose shears upon impact with a hard target, such as armor, and drives a firing pin into a detonator in an arming rotor to cause instantaneous initiation of an armor piercing shaped charge. Impact with soft targets, such as earth, will not shear the frangible member but causes an inertia firing pin to initiate a propellant charge and a pyrotechnic delay. The propellant charge ejects the warhead upward three to ten feet at which time the pyrotechnic delay initiates the shaped charge for optimum effect against unprotected personnel in the vicinity.
Inventors
- 👤 T Cammack
- 👤 W Donahue
- 👤 P Gratton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 20:25
CPC Classifications
F; F42; F42C; F42C9/00; F42C9/14; F42C9/142; F42B; F42B12/00; F42B12/02; F42B12/04; F42B12/10; F42B12/36; F42B12/56; F42B12/58; F42C1/00; F42C1/02; F42C1/09; F42C15/00; F42C15/24; F42C15/28; F42C15/29
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
147 words
In a dual function bomb having an explosive warhead, a fuze comprising: a base; a first firing pin supported by said base; a second firing pin supported by said base; means for actuating said first firing pin upon impact against a hard object; inertia actuated means for actuating said second firing pin upon sudden deceleration; a propellant disposed to propell the warhead upward; first explosive means initiatable by said first firing pin and connected to said warhead for initiation thereof; second explosive means initiatable by said second firing pin and communicating with said propellant and said first explosive means for initiation thereof; a first delay means for interposing a time delay between impact of the bomb and initiation of said propellant means; and a second delay means for interposing a time delay between initiation of said second explosive means and initiation of said first explosive means thereby.
Claim 2
Dependent Claim
147 words
In a dual function bomb having an explosive warhead, a fuze comprising: a base; a first firing pin supported by said base; a second firing pin supported by said base; means for actuating said first firing pin upon impact against a hard object; inertia actuated means for actuating said second firing pin upon sudden deceleration; a propellant disposed to propell the warhead upward; first explosive means initiatable by said first firing pin and connected to said warhead for initiation thereof; second explosive means initiatable by said second firing pin and communicating with said propellant and said first explosive means for initiation thereof; a first delay means for interposing a time delay between impact of the bomb and initiation of said propellant means; and a second delay means for interposing a time delay between initiation of said second explosive means and initiation of said first explosive means thereby.
Claim 3
Dependent Claim
70 words
The fuze defined in claim 1 wherein: said inertia actuated means comprises a cylindrical mass mounted for sliding movement in said base; and said first delay means comprises a cylindrical sleeve having defined therein a helical track, said mass being slidably mounted in said sleeve, and a follower connected to said mass and extending into said track for causing the rotation of said mass as it slides in said sleeve.
Claim 4
Dependent Claim
79 words
The fuze defined in claim 1 wherein said means for actuating said first firing pin comprises: a shiftable impact receiving member disposed in the leading face of said bomb as it falls, and shiftable into operative engagement with said firing pin; a frangible member holding said impact receiving member against movement relative to said bomb but severable upon impact with a hard object to permit shifting of said shiftable impact receiving member into operative engagement with said firing pin.
Claim 5
Dependent Claim
84 words
The fuze of claim 1 further comprising: arming means supported by said base and shiftable between a first position in which the explosive trains of said first and said second explosives are broken, and a second position in which said explosive trains are complete; means supported by said base for sensing an environmental condition; means interconnecting said sensing means and said arming means to effect said shift from said first to said second position of said arming means when saiD environmental condition is sensed.
Claim 6
Dependent Claim
23 words
The fuze defined in claim 4, wherein: said sensing means comprises an oscillating wind vane; and said interconnecting means comprises a gear train.
Claim 7
Dependent Claim
154 words
The fuze defined in claim 4, wherein said sensing means comprises a wind vane mounted for rotating oscillation upon a first shaft journaled in said base; said interconnecting means comprises an eccentric pin connected to said first shaft, a guide disc engaged with said pin for oscillation thereby, a pawl connected to said guide disc for oscillation therewith, a second shaft journaled for rotation in said base, a ratchet wheel keyed to said second shaft for rotation therewith and having teeth formed on the periphery thereof engaged by said pawl for rotation thereby in a reference direction, a second pin fixed to the side of said ratchet wheel, a sprag mechanism engaging said shaft for preventing rotation thereof in the direction opposite to that of said reference direction, a geneva wheel engagable and rotatable by said second pin and connected to said arming means for rotation thereof from said first to said second position.
Claim 8
Dependent Claim
70 words
The fuze defined in claim 4, wherein: said inertia actuated means comprises a cylindrical mass mounted for sliding movement in said base; and said first delay means comprises a cylindrical sleeve having defined therein a helical track, said mass being slidably mounted in said sleeve, and a follower connected to said mass and extending into said track for causing the rotation of said mass as it slides in said sleeve.
Claim 9
Dependent Claim
79 words
The fuze defined in claim 4, wherein: said means for actuating said first firing pin comprises: a shiftable impact receiving member disposed in the leading face of said bomb as it falls, and shiftable into operative engagement with said firing pin; a frangible member holding said impact receiving member against movement relative to said bomb but severable upon impact with a hard object to permit shifting of said shiftable impact receiving member into operative engagement with said firing pin.
Claim 10
Dependent Claim
70 words
The fuze defined in claim 8, wherein: said inertia actuated means comprises a cylindrical mass mounted for sliding movement in said base; and said first delay means comprises a cylindrical sleeve having defined therein a helical track, said mass being slidably mounted in said sleeve, and a follower connected to said mass and extending into said track for causing the rotation of said mass as it slides in said sleeve.
Claim 11
Dependent Claim
142 words
The fuze defined in claim 6, wherein: said inertia actuated means comprises a cylindrical mass mounted for sliding movement in said base; and said first delay means comprises a cylindrical sleeve having defined therein a helical track, said mass being slideably mounted in said sleeve, and a follower connected to said mass and extending into said track for causing the rotation of said mass as it slides in said sleeve; said means for actuating said first firing pin comprises; a shiftable impact receiving member disposed in the leading face of said bomb as it falls, and shiftable into operative engagement with said firing pin; a frangible member holding said impact receiving member against movement relative to said bomb but severable upon impact with a hard object to permit shifting of said shiftable impact receiving member into operative engagement with said firing 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) | 1977-05-06 | 1977-11-05 | 1978-05-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-05-06 | 1981-11-05 | 1982-05-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-05-06 | 1985-11-05 | 1986-05-07 | $7700.00 | Window Closed / Lapsed |