US4353301A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Smoke grenade
Assignee: Raufoss Ammunisjonsfabrikker AS
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Filing: 1980-09-26
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Granted: 1982-10-12
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Expires: 2000-09-26
Abstract
Abstract A smoke grenade for providing screening. A container has in the lower portion thereof a discharge composition ignited by a primer composition for igniting an ignition/bursting composition which in turn ignites a set of easily ignitable smoke charges, preferably disc shaped smoke charges surrounding the ignition/bursting composition. Ahead of the first charges in the direction of travel of the grenade is a further smoke charge which is compact and hence more slowly ignitable than the first set of charges. A delay booster and a further primer composition ignite this further smoke charge after a delay.
Inventors
- 👤 Kjell O. Jacobsen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:02
CPC Classifications
F; F42; F42B; F42B12/00; F42B12/02; F42B12/36; F42B12/46; F42B12/48
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
174 words
A smoke grenade for producing smoke for screening purposes, comprising: a casing containing a discharge composition for propelling the casing, a primer positioned to ignite the discharge composition, a first delay means, an ignition/bursting composition contained in a disruptable tube and positioned to be ignited via said first delay means, after a predetermined delay, by said discharge composition, and a set of easily ignitable annular disc shaped smoke charges surrounding the ignition/bursting change and positioned to be ignited and immediately broken up and thrown outwardly laterally, by said ignition/bursting composition for rapid wide spread smoke production, a further smoke charge which is compact and hence burns more slowly than the first said smoke charges and which is positioned ahead of the first said smoke charges taken in the direction of travel of the grenade, and further ignition means positioned to ignite the further smoke charge, a further delay means, said further ignition means being ignitable by said ignition/bursting composition via said further delay means, after a pre-determined delay, for igniting said further smoke charge.
Claim 2
Dependent Claim
174 words
A smoke grenade for producing smoke for screening purposes, comprising: a casing containing a discharge composition for propelling the casing, a primer positioned to ignite the discharge composition, a first delay means, an ignition/bursting composition contained in a disruptable tube and positioned to be ignited via said first delay means, after a predetermined delay, by said discharge composition, and a set of easily ignitable annular disc shaped smoke charges surrounding the ignition/bursting change and positioned to be ignited and immediately broken up and thrown outwardly laterally, by said ignition/bursting composition for rapid wide spread smoke production, a further smoke charge which is compact and hence burns more slowly than the first said smoke charges and which is positioned ahead of the first said smoke charges taken in the direction of travel of the grenade, and further ignition means positioned to ignite the further smoke charge, a further delay means, said further ignition means being ignitable by said ignition/bursting composition via said further delay means, after a pre-determined delay, for igniting said further smoke charge.
Claim 3
Dependent Claim
14 words
A smoke grenade according to claim 1, said further smoke charge being HC composition.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-10-11 | 1986-04-12 | 1986-10-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-10-11 | 1990-04-12 | 1990-10-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-10-11 | 1994-04-12 | 1994-10-12 | $7700.00 | Window Closed / Lapsed |