Patent US3680484A successfully refreshed from Google Patents.
US3680484A
Expired / Lapsed
US
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Pyrotechnic emitter
Assignee: Airbus Defence and Space GmbH
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Filing: 1969-07-25
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Granted: 1972-08-01
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Expires: 1989-07-25
Abstract
Abstract A pyrotechnic emitter particularly for the infrared spectral range comprises a radiation emitting body and an energy source for heating the body. The device is particularly applicable for use in the infrared tracking of automatically movable bodies such as a missile and may advantageously be formed in an annular shape of a plurality of annular segmental parts. The emitter includes a thin-walled tubular housing of any desired cross section which is bent in accordance with the geometry of its arrangement for example into an annular shape to fit adjacent the discharge end of the nozzle of a missile. The energy source comprises a pyrotechnic glow charge which fills the tubular member and gives off its heat energy without appreciable evolution of gas. The thin-walled tube may comprise a metal tube having a wall thickness of less than 1 milimeter or it may be made of oxide ceramic, or graphite. The housing is advantageously held in place in association with a device such as a missile by securing claws, eyelets or attaching cuffs which are advantageously made of the same material as the individual tube sections of the housing. A mirror coating is advantageously arranged around and faces the emitter in order to reduce the emission losses in a direction other than the desired emission direction.
Inventors
- 👤 Gunter Stetter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 04:02
CPC Classifications
F; F42; F42B; F42B12/00; F42B12/02; F42B12/36; F42B12/38; F42B12/382
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
119 words
A pyrotechnic emitter for the infrared spectral range and in particular for use in the infrared tracking of an automatically moving object, such as a missile; comprising, in combination, a relatively thin-walled and closed tubular member made of glowable material forming a radiation emitting surface of a body of predetermined cross section and of a configuration facilitating accommodation of said body within a selected mounting space of said object, said tubular member being chargeable with a pyrotechnic glow-substance of the type which gives off heat energy devoid of any exterior flame effect and appreciable gas evolution, and ignition means for said substance disposed adjacent at least one end of said tubular member to effectuate glow radiation from the latter.
Claim 2
Dependent Claim
119 words
A pyrotechnic emitter for the infrared spectral range and in particular for use in the infrared tracking of an automatically moving object, such as a missile; comprising, in combination, a relatively thin-walled and closed tubular member made of glowable material forming a radiation emitting surface of a body of predetermined cross section and of a configuration facilitating accommodation of said body within a selected mounting space of said object, said tubular member being chargeable with a pyrotechnic glow-substance of the type which gives off heat energy devoid of any exterior flame effect and appreciable gas evolution, and ignition means for said substance disposed adjacent at least one end of said tubular member to effectuate glow radiation from the latter.
Claim 3
Dependent Claim
18 words
A pyrotechnic emitter, according to claim 1, wherein said radiation emitting body comprises a tube of oxide ceramic.
Claim 4
Dependent Claim
16 words
A pyrotechnic emitter, according to claim 1, wherein said radiation emitting body comprises a graphite tube.
Claim 5
Dependent Claim
42 words
An emitter according to claim 1, wherein said radiation emitting body is formed by at least one tubular member having a wall thickness of less than 1 mm, and holding means constructed for anchoring said member within said space of said object.
Claim 6
Dependent Claim
38 words
An emitter according to claim 4, wherein said tubular member comprises a plurality of tubular sections arranged in succession to each other within said space, said ignition means being in contact with respective ends of said tubular sections.
Claim 7
Dependent Claim
22 words
An emitter according to claim 5, including clamp means forming said holding means and engaging said tubular sections in their operative position.
Claim 8
Dependent Claim
55 words
An emitter according to claim 6, said holding means being constituted by the same material as that of said tubular member sections. *. An emitter according to claim 1, including a mirror coating arranged for coaction with said tubular member and facing at least a portion of the latter for enhancing the radiation emitting surface.
Claim 9
Dependent Claim
35 words
An emitter according to claim 1, including optical filter means provided at a location spaced from Said tubular member for filtering out undesirable spectral radiation portions, thereby to control the spectral range of radiation emission.
Claim 10
Dependent Claim
21 words
An emitter according to claim 1, including optical filter means constructed for modulating radiation emanating from the charge of said member.
Claim 11
Dependent Claim
83 words
A heat tractible movable body comprising a missile having a discharge nozzle, an annular pyrotechnic emitter arranged around said nozzle, said annular emitter comprising a plurality of torroidal sections, cuff means on said missile body surrounding said pyrotechnic emitter and holding said pyrotechnic emitter in position adjacent the rear of said missile nozzle, and ignition means for said pyrotechnic emitter, said pyrotechnic emitter comprising a thin-walled tube having a pyrotechnic glow charge which gives off its heat energy without appreciable evolution of gas.
Claim 12
Dependent Claim
83 words
A heat tractible movable body comprising a missile having a discharge nozzle, an annular pyrotechnic emitter arranged around said nozzle, said annular emitter comprising a plurality of torroidal sections, cuff means on said missile body surrounding said pyrotechnic emitter and holding said pyrotechnic emitter in position adjacent the rear of said missile nozzle, and ignition means for said pyrotechnic emitter, said pyrotechnic emitter comprising a thin-walled tube having a pyrotechnic glow charge which gives off its heat energy without appreciable evolution of gas.
Claim 13
Dependent Claim
48 words
A device, according to claim 11, including spaced wall members carried by said missile having an opening at the rear end of said missile, clamping means carried by said spaced wall members and surrounding said pyrotechnic emitter and holding said emitter in position located between said emitter sections.
Claim 14
Dependent Claim
13 words
A device, according to claim 11, said emitter is of cylindrical cross section.
Claim 15
Dependent Claim
15 words
A device, according to claim 11, wherein said emitter is of substantially trapezoidal cross section.
Claim 16
Dependent Claim
23 words
A device, according to claim 11, including an eyelet carried on said missile and having a cylindrical eyelet portion engaged over said emitter.
Claim 17
Dependent Claim
130 words
A pyrotechnic emitter for the infrared spectral range and particularly for use in the infrared tracking of an automatically moving body, such as a missile, comprising a thin-walled closed tubular member forming a radiation emitting body of predetermined cross section, said tubular member being filled with a pyrotechnic glow charge of a type which will give off its heat energy without appreciable evolution of gas, said thin-walled tube being constructed to permit it to be bent to any desired configuration in order to accommodate its shape to mounting space therefor, said radiation emitting body comprising a plurality of individual tubular sections arranged together in a continuous unit and being spaced apart to define joints therebetween, and ignition means disposed in the joints between said parts for igniting the individual parts.
Claim 18
Dependent Claim
130 words
A pyrotechnic emitter for the infrared spectral range and particularly for use in the infrared tracking of an automatically moving body, such as a missile, comprising a thin-walled closed tubular member forming a radiation emitting body of predetermined cross section, said tubular member being filled with a pyrotechnic glow charge of a type which will give off its heat energy without appreciable evolution of gas, said thin-walled tube being constructed to permit it to be bent to any desired configuration in order to accommodate its shape to mounting space therefor, said radiation emitting body comprising a plurality of individual tubular sections arranged together in a continuous unit and being spaced apart to define joints therebetween, and ignition means disposed in the joints between said parts for igniting the individual parts.
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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) | 1975-08-01 | 1976-01-31 | 1976-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-01 | 1980-01-31 | 1980-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-01 | 1984-01-31 | 1984-08-01 | $7700.00 | Window Closed / Lapsed |