Patent US3712224A successfully refreshed from Google Patents.
US3712224A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Decoy flare with traveling ignition charge
Assignee: United States Department of the Navy
•
Filing: 1971-06-21
•
Granted: 1973-01-23
•
Expires: 1991-06-21
Abstract
Abstract Cartridge type decoy flares are provided with ignition devices which will ignite the flare only after it has left the bore of the dispenser. Safety means is provided which remains in effect until after the flare has cleared the muzzle of the bore.
Inventors
- 👤 J Hanzel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 11:09
CPC Classifications
F; F42; F42B; F42B5/00; F42B5/02; F42B5/145; F42B5/15; F21; F21L; F21L17/00
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
138 words
A decoy flare system comprising: a housing; a plurality of flare cartridges in said housing; a substantially cylindrical flare candle in each said cartridge; piston means for expulsing flares individually from said cartridges and for preventing ignition of said flares until after said flare candle has cleared said cartridge; ignition means on said piston means for igniting said candle; said cartridge having a central bore and abuttment means projecting within said bore near the muzzle end of said cartridge; said piston means including a bore riding portion and a cap portion; said piston means being effective to prevent fire or flame from reaching said candle; and said cap portion being separable from said bore riding portion to provide communication of fire and flame through said piston means to said candle when said bore riding means meets said abuttment.
Claim 2
Dependent Claim
138 words
A decoy flare system comprising: a housing; a plurality of flare cartridges in said housing; a substantially cylindrical flare candle in each said cartridge; piston means for expulsing flares individually from said cartridges and for preventing ignition of said flares until after said flare candle has cleared said cartridge; ignition means on said piston means for igniting said candle; said cartridge having a central bore and abuttment means projecting within said bore near the muzzle end of said cartridge; said piston means including a bore riding portion and a cap portion; said piston means being effective to prevent fire or flame from reaching said candle; and said cap portion being separable from said bore riding portion to provide communication of fire and flame through said piston means to said candle when said bore riding means meets said abuttment.
Claim 3
Dependent Claim
116 words
In a flare system according to claim 1: said piston means comprising a cylindrical cup attached to the breech end of said candle with the sides of said cup parallel to the bore of said cartridge; the sides of said cup having one or more orthogonal cylindrical openings therein; blowout means in each said opening; said cup further including passageways communicating between the inside of said cup and the base of said candle; said passageways being normally blocked by said blowout means; whereby, when said flare candle and piston are ejected from said cartridge, said blowout means will exit from said openings and allow fire from said ignition means to reach the base of said candle.
Claim 4
Dependent Claim
36 words
The flare system according to claim 2 wherein explosive means is provided for expelling said flare candle from said cartridge; and a rupturable diaphragm is fastened within said cartridge between said candle and said explosive means.
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) | 1976-01-23 | 1976-07-24 | 1977-01-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-23 | 1980-07-24 | 1981-01-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-23 | 1984-07-24 | 1985-01-23 | $7700.00 | Window Closed / Lapsed |