Patent US3654867A successfully refreshed from Google Patents.
US3654867A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pyrotechnic devices
Assignee: Pains Wessex Ltd
•
Filing: 1969-05-19
•
Granted: 1972-04-11
•
Expires: 1989-05-19
Abstract
Abstract A signal device comprising signal composition which is housed within a casing and which remains therein during combustion and a firing device which releasably engages the casing and which can be hand-held during the combustion of the composition.
Inventors
- 👤 Dudley Charles Murray
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 07:40
CPC Classifications
F; F42; F42C; F42C7/00; F42C7/12
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
288 words
A pyrotechnic signal device comprising: a casing, one end of said casing permitting the egress of combustion products, and a neck portion being formed on the other end of said casing; a mass of flare composition housed in said casing and arranged to remain therein during combustion of said flare composition; flare composition igniting means, said igniting means including a percussion cap, said percussion cap being positioned in said neck portion; said flare composition having a passageway therein coaxial with said percussion cap; a layer of priming material covering the surface of said composition remote from said percussion cap; a layer of thermally insulating material lining the passageway; a perforated plate in contact with said priming material on the side remote from said percussion cap, said perforated plate being constrained against movement along the length of said casing; and a firing device, said firing device being in releasable engagement with said neck portion of said casing and forming a handle for said signal device, and said firing device comprising a firing pin, guide means for said firing pin, a spring operable to urge said firing pin towards said cap, and a cocking member, said cocking member being movable to retract said firing pin against the action of said spring and being capable of being so retracted and released repeatedly; whereby, said device is operated by moving said cocking member so as to retract said firing pin and releasing said cocking member so that said firing pin strikes said percussion cap, thereby causing said igniting means to ignite said priming material which ignites said composition, said firing device enabling said signal device to be hand-held while combustion products from said composition emerge from said one end of said casing.
Claim 2
Dependent Claim
288 words
A pyrotechnic signal device comprising: a casing, one end of said casing permitting the egress of combustion products, and a neck portion being formed on the other end of said casing; a mass of flare composition housed in said casing and arranged to remain therein during combustion of said flare composition; flare composition igniting means, said igniting means including a percussion cap, said percussion cap being positioned in said neck portion; said flare composition having a passageway therein coaxial with said percussion cap; a layer of priming material covering the surface of said composition remote from said percussion cap; a layer of thermally insulating material lining the passageway; a perforated plate in contact with said priming material on the side remote from said percussion cap, said perforated plate being constrained against movement along the length of said casing; and a firing device, said firing device being in releasable engagement with said neck portion of said casing and forming a handle for said signal device, and said firing device comprising a firing pin, guide means for said firing pin, a spring operable to urge said firing pin towards said cap, and a cocking member, said cocking member being movable to retract said firing pin against the action of said spring and being capable of being so retracted and released repeatedly; whereby, said device is operated by moving said cocking member so as to retract said firing pin and releasing said cocking member so that said firing pin strikes said percussion cap, thereby causing said igniting means to ignite said priming material which ignites said composition, said firing device enabling said signal device to be hand-held while combustion products from said composition emerge from said one end of said casing.
Claim 3
Dependent Claim
262 words
A pyrotechnic signal device comprising: a casing, one end of said casing permitting the egress of combustion products, and a neck portion being formed on the other end of said casing; a mass of smoke-generating composition housed in said casing and arranged to remain therein during combustion of said smoke-generating composition; smoke-generating composition igniting means, said igniting means includes a percussion cap, said percussion cap being positioned in said neck portion, said smoke-generating composition having a passageway therein coaxial with said percussion cap; a layer of priming material covering the surface of said composition remote from said percussion cap; a cooling chamber through which combustion products pass before emerging from said casing; and a firing device, said firing device being in releasable engagement with said neck portion of said casing and forming a handle for said signal device, and said firing device comprising a firing pin, guide means for said firing pin, a spring operable to urge said firing pin towards said cap, and a cocking member, said cocking member being movable to retract said firing pin against the action of said spring and being capable of being so retracted and released repeatedly; whereby, said device is operated by moving said cocking member so as to retract said firing pin and releasing said cocking member so that said firing pin strikes said percussion cap, thereby causing said igniting means to ignite said priming material which ignites said composition, said firing device enabling said signal device to be hand-held while combustion products from said composition emerge from said one end of said casing.
Claim 4
Dependent Claim
262 words
A pyrotechnic signal device comprising: a casing, one end of said casing permitting the egress of combustion products, and a neck portion being formed on the other end of said casing; a mass of smoke-generating composition housed in said casing and arranged to remain therein during combustion of said smoke-generating composition; smoke-generating composition igniting means, said igniting means includes a percussion cap, said percussion cap being positioned in said neck portion, said smoke-generating composition having a passageway therein coaxial with said percussion cap; a layer of priming material covering the surface of said composition remote from said percussion cap; a cooling chamber through which combustion products pass before emerging from said casing; and a firing device, said firing device being in releasable engagement with said neck portion of said casing and forming a handle for said signal device, and said firing device comprising a firing pin, guide means for said firing pin, a spring operable to urge said firing pin towards said cap, and a cocking member, said cocking member being movable to retract said firing pin against the action of said spring and being capable of being so retracted and released repeatedly; whereby, said device is operated by moving said cocking member so as to retract said firing pin and releasing said cocking member so that said firing pin strikes said percussion cap, thereby causing said igniting means to ignite said priming material which ignites said composition, said firing device enabling said signal device to be hand-held while combustion products from said composition emerge from said one end of said casing.
Claim 5
Dependent Claim
43 words
A pyrotechnic signal device according to claim 2, wherein a perforated plate is provided which is in contact with said priming material on the side remote from said percussion cap, said perforated plate being constrained against movement along the length of said casing.
Claim 6
Dependent Claim
209 words
A pyrotechnic signal device comprising: a casing, one end of said casing permitting the egress of combustion products, said casing being formed of metal; a mass of pyrotechnic composition housed in said casing and arranged to remain therein during combustion of said pyrotechnic composition; a layer of thermally insulating material between the pyrotechnic composition and the wall of the casing; pyrotechnic composition igniting means, said igniting means including a percussion cap; and a firing device, said firing device in releasable engagement with said casing and forming a handle for said signal device, said firing device comprising a firing pin, guide means for said firing pin, a spring operable to urge said firing pin towards said cap, and a cocking member, said cocking member being movable to retract said firing pin against the action of said spring and being capable of being so retracted and released repeatedly; whereby, said device is operated by moving said cocking member so as to retract said firing pin and releasing said cocking member so that said firing pin strikes said percussion cap, thereby causing said igniting means to ignite said composition, said firing device enabling said signal device to be hand-held while combustion products from said composition emerge from said one of said casing.
Claim 7
Dependent Claim
209 words
A pyrotechnic signal device comprising: a casing, one end of said casing permitting the egress of combustion products, said casing being formed of metal; a mass of pyrotechnic composition housed in said casing and arranged to remain therein during combustion of said pyrotechnic composition; a layer of thermally insulating material between the pyrotechnic composition and the wall of the casing; pyrotechnic composition igniting means, said igniting means including a percussion cap; and a firing device, said firing device in releasable engagement with said casing and forming a handle for said signal device, said firing device comprising a firing pin, guide means for said firing pin, a spring operable to urge said firing pin towards said cap, and a cocking member, said cocking member being movable to retract said firing pin against the action of said spring and being capable of being so retracted and released repeatedly; whereby, said device is operated by moving said cocking member so as to retract said firing pin and releasing said cocking member so that said firing pin strikes said percussion cap, thereby causing said igniting means to ignite said composition, said firing device enabling said signal device to be hand-held while combustion products from said composition emerge from said one of said casing.
Claim 8
Dependent Claim
31 words
A pyrotechnic signal device according to claim 4, wherein a layer of thermally insulating material is provided in the end portion of the casing that is adjacent to the firing device.
Claim 9
Dependent Claim
165 words
A pyrotechnic signal device comprising: a casing, one end of said casing permitting the egress of combustion products, and an externally screw-threaded neck portion being formed on the other end of said casing; a mass of flare composition housed in said casing and arranged to remain therein during combustion of said flare composition; flare composition igniting means, said igniting means including a percussion cap, said percussion being positioned in said neck portion; said flare composition having a passageway coaxial with said percussion cap; a layer of priming material covering the surface of said composition remote from said cap; a perforated plate in contact with said priming material on the side remote from said percussion cap, said perforated plate being constrained against movement along the length of the casing; and a layer of thermally insulating material lining said passageway; whereby, the striking of said cap causes said igniting means to ignite said priming material which ignites said composition, said composition remaining in said casing when burning.
Claim 10
Dependent Claim
165 words
A pyrotechnic signal device comprising: a casing, one end of said casing permitting the egress of combustion products, and an externally screw-threaded neck portion being formed on the other end of said casing; a mass of flare composition housed in said casing and arranged to remain therein during combustion of said flare composition; flare composition igniting means, said igniting means including a percussion cap, said percussion being positioned in said neck portion; said flare composition having a passageway coaxial with said percussion cap; a layer of priming material covering the surface of said composition remote from said cap; a perforated plate in contact with said priming material on the side remote from said percussion cap, said perforated plate being constrained against movement along the length of the casing; and a layer of thermally insulating material lining said passageway; whereby, the striking of said cap causes said igniting means to ignite said priming material which ignites said composition, said composition remaining in said casing when burning.
Claim 11
Dependent Claim
171 words
A pyrotechnic signal device comprising: a casing, one end of said casing permitting the egress of combustion products, and an externally screw-threaded neck portion being formed on the other end of said casing; a mass of smoke-generating composition housed in said casing and arranged to remain therein during combustion of said smoke-generating composition; smoke-generating composition igniting means, said igniting means including a percussioN cap, said percussion cap being positioned in said neck portion; said smoke-generating composition having a passageway coaxial with said percussion cap; a layer of priming material covering the surface of said composition remote from said cap; a perforated plate in contact with said priming material on the side remote from said percussion cap, said perforated plate being constrained against movement along the length of said casing; and a cooling chamber through which the combustion products pass before emerging from said casing; whereby, the striking of said cap causes said igniting means to ignite said priming material which ignites said composition, said combustion remaining in said casing when burning.
Claim 12
Dependent Claim
171 words
A pyrotechnic signal device comprising: a casing, one end of said casing permitting the egress of combustion products, and an externally screw-threaded neck portion being formed on the other end of said casing; a mass of smoke-generating composition housed in said casing and arranged to remain therein during combustion of said smoke-generating composition; smoke-generating composition igniting means, said igniting means including a percussioN cap, said percussion cap being positioned in said neck portion; said smoke-generating composition having a passageway coaxial with said percussion cap; a layer of priming material covering the surface of said composition remote from said cap; a perforated plate in contact with said priming material on the side remote from said percussion cap, said perforated plate being constrained against movement along the length of said casing; and a cooling chamber through which the combustion products pass before emerging from said casing; whereby, the striking of said cap causes said igniting means to ignite said priming material which ignites said composition, said combustion remaining in said casing when burning.
Claim 13
Dependent Claim
30 words
A pyrotechnic signal device according to claim 1, wherein said firing device is a conventional pen gun and said neck portion is externally screw-threaded for engagement with said pen gun.
Claim 14
Dependent Claim
30 words
A pyrotechnic signal device according to claim 2, wherein said firing device is a conventional pen gun and said neck portion is externally screw-threaded for engagement with said pen gun.
References Cited (Backward Citations)
US1306407A
Cited
US1640892A
Cited
US2436305A
Cited
US3120183A
Cited
US3044360A
Cited
US3102477A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-04-11 | 1975-10-11 | 1976-04-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-04-11 | 1979-10-11 | 1980-04-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-04-11 | 1983-10-11 | 1984-04-11 | $7700.00 | Window Closed / Lapsed |