Patent US3980020A successfully refreshed from Google Patents.
US3980020A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Projectile with delayed bursting effect
Assignee: Raufoss Ammunisjonsfabrikker AS
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Filing: 1974-05-17
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Granted: 1976-09-14
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Expires: 1994-05-17
Abstract
Abstract A projectile having at least one incendiary charge ahead of a main bursting charge and adapted to ignite the same. An adjustment charge forward of the incendiary charge is ignited upon impact of the projectile for driving a body rearwardly into the incendiary charge to form an elongated aperture upon ignition of the incendiary charge.
Inventors
- 👤 Kare Roald Strandli
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 05:31
CPC Classifications
F; F42; F42B; F42B12/00; F42B12/02; F42B12/36; F42B12/44; F42C; F42C1/00; F42C1/10; F42C1/12
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
126 words
An elongated projectile of the type wherein the bursting effect is delayed following impingement of the front of the projectile against a target, comprising: a bursting charge, an incendiary charge arranged in front of the bursting charge, said incendiary charge being capable of burning, upon ignition thereof, until it ignites the bursting charge, an adjustment charge arranged in front of the said incendiary charge so as to ignite said incendiary charge, a body arranged at the rear boundary of said adjustment charge and capable of being driven rearwardly into the incendiary charge, upon ignition of the adjustment charge, to form a longitudinal aperture into the incendiary charge, and means for igniting the adjustment charge upon impingement of the forward end of the projectile against a target.
Claim 2
Dependent Claim
126 words
An elongated projectile of the type wherein the bursting effect is delayed following impingement of the front of the projectile against a target, comprising: a bursting charge, an incendiary charge arranged in front of the bursting charge, said incendiary charge being capable of burning, upon ignition thereof, until it ignites the bursting charge, an adjustment charge arranged in front of the said incendiary charge so as to ignite said incendiary charge, a body arranged at the rear boundary of said adjustment charge and capable of being driven rearwardly into the incendiary charge, upon ignition of the adjustment charge, to form a longitudinal aperture into the incendiary charge, and means for igniting the adjustment charge upon impingement of the forward end of the projectile against a target.
Claim 3
Dependent Claim
62 words
A projectile according to claim 1, said means for igniting the adjustment charge comprising a fuse located forwardly of the adjustment charge, a rotatable safety device located between the fuse and the adjustment charge and including a bore adapted to align the fuse with the adjustment charge when the projectile is in flight, and including a detonator material in the said bore.
Claim 4
Dependent Claim
68 words
A projectile according to claim 1, wherein said means for igniting the adjustment charge includes a fuse located forwardly of the adjustment charge, a rotatable safety device located between the adjustment charge and the fuse and including a bore therethrough adapted to align the fuse with the adjustment charge when the projectile is in flight, and wherein a portion of the adjustment charge is located in said bore.
Claim 5
Dependent Claim
62 words
A projectile according to claim 1, wherein said means for igniting the adjustment charge comprises an incendiary charge located forwardly of the adjustment charge within a casing formed of a relatively soft material, and including a disc having an opening therethrough arranged between the forwardmost incendiary charge and the adjustment charge to prevent premature rearward movement of the said forwardmost incendiary charge.
Claim 6
Dependent Claim
21 words
A projectile according to claim 1, including a plate located rearwardly of the said body and forwardly of the incendiary charge.
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) | 1979-09-14 | 1980-03-15 | 1980-09-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-09-14 | 1984-03-15 | 1984-09-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-09-14 | 1988-03-15 | 1988-09-14 | $7700.00 | Window Closed / Lapsed |