EP0053658B1 - Radar reflector for an artillery projectile - Google Patents
Radar reflector for an artillery projectile Download PDFInfo
- Publication number
- EP0053658B1 EP0053658B1 EP81107112A EP81107112A EP0053658B1 EP 0053658 B1 EP0053658 B1 EP 0053658B1 EP 81107112 A EP81107112 A EP 81107112A EP 81107112 A EP81107112 A EP 81107112A EP 0053658 B1 EP0053658 B1 EP 0053658B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- sleeve
- sleeve element
- projectile
- shell
- radar
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/27—Adaptation for use in or on movable bodies
- H01Q1/28—Adaptation for use in or on aircraft, missiles, satellites, or balloons
- H01Q1/281—Nose antennas
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
- F42B12/00—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material
- F42B12/02—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect
- F42B12/36—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect for dispensing materials; for producing chemical or physical reaction; for signalling ; for transmitting information
- F42B12/38—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect for dispensing materials; for producing chemical or physical reaction; for signalling ; for transmitting information of tracer type
- F42B12/387—Passive tracers, e.g. using a reflector mounted on the projectile
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
- F42B30/00—Projectiles or missiles, not otherwise provided for, characterised by the ammunition class or type, e.g. by the launching apparatus or weapon used
- F42B30/08—Ordnance projectiles or missiles, e.g. shells
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49805—Shaping by direct application of fluent pressure
- Y10T29/49806—Explosively shaping
Definitions
- the invention relates to a body axially attachable to an artillery projectile with a functional part designed as a radar reflector, according to the preamble of the claim.
- a body is known, for example, from DE utility model 7 934 250: this document describes that the radar reflector can be attached to the floor of the projectile as an additional component and fastened thereon by means of screws.
- this type of fastening is safe and simple, it requires drilling holes and cutting threads in the floor of the storeys and therefore appropriate preparation, which must be carried out in a workshop.
- an artillery projectile of the usual type is designated by 1.
- a first radar reflecting body 2 has a base 3, which, as described in DE utility model 7 934 250, is designed as a multiple triple mirror reflector.
- a sleeve 4 is formed, which is intended to be attached to the pin (rear part) of the projectile.
- a second radar reflecting body 5 has a sleeve 6 which is intended to be plugged onto the bow tip (bow part) of the projectile, while - not visible in the drawing - the front part 7 of the body 5 as a radar reflector, e.g. B. is designed as a Fresnel lens or as a Van Atta reflector.
- the two bodies 2 and 5 are each designed to be rotationally symmetrical about a longitudinal axis 8, 8 ', the longitudinal axis 8, 8' coinciding with the longitudinal axis of the projectile when plugged in.
- the two bodies 2 and 5 are also shown in FIG. 1 as bodies which are rotationally symmetrical about the longitudinal axis 8, 8 '; Variants with rotationally symmetrical, but not rotationally symmetrical bodies are also described below.
- the body 2, which is designed as a multiple triple mirror reflector, consists of metal, for example of brass, or of the aluminum alloy mentioned in DE Utility Model 7 934 250.
- the body 5 designed as a Fresnel lens or as a Van Atta reflector is, for example, in two parts with a sleeve 6 made of brass or aluminum alloy and a front part 7 made of plastic such as epoxy or polyurethane resin, which in a manner known per se to form a Fresnel lens or a Van Atta reflector is coated with a metallic layer pattern (e.g. made of copper or aluminum).
- a metallic layer pattern e.g. made of copper or aluminum
- a variant of a radar reflecting body to be plugged onto a projectile is shown in section.
- This body is made in one piece from metal, but a base part 21 and a sleeve 22 can be distinguished.
- the bottom part 21 also forms the radar-reflecting functional part; for this purpose it is designed as a multiple triple mirror reflector of the type described in DE Utility Model 7 934 250, which is shown in the drawing by the cutting boundaries 23 and 24.
- the entire body is designed to be rotationally symmetrical about an axis 25, while the sleeve 22 is designed to be rotationally symmetrical about this axis 25, specifically in such a way that it can be fitted onto the projectile pin in a precisely fitting manner.
- a radar reflecting body to be plugged onto the arch tip of a projectile is shown in section.
- the entire body is rotationally symmetrical about the axis 51.
- the sleeve 52 made of metal is glued to a plastic radar-reflecting functional part 53.
- Electrically conductive strips 55 are attached to the outer surface 54 of the functional part 53, which cooperatively form a Fresnel lens.
- the inner part 56 of the sleeve is shaped in such a way that it fits exactly on the arch tip of the projectile.
- the inner part 57 of the functional part 53 is provided with a corresponding recess for receiving the top detonator of the projectile.
- a detonating cord 59 is provided on the outside 58 of the sleeve 52, a detonating cord 59 is provided in a bead arranged essentially rotationally symmetrically about the axis 51, the ignition of which after the sleeve has been plugged onto the projectile in a manner known per se by pressing on and optionally by explosive welding or electric discharge welding the sleeve 52 with the bow tip of the projectile.
- FIG. 4 shows a half section of a radar reflecting body 63 to be plugged onto the projectile pin and an explosive device 60 arranged thereon.
- the body 63 is after attached to the floor using the process known as "explosive welding".
- the body 63 is made in one piece from metal, its bottom part 64 is designed as a multiple triple mirror reflector, which is represented in the drawing by the cutting boundaries 70 and 71.
- a sleeve 65 of the radar reflecting body 63 has an annular groove 66 on its outer side 73.
- the explosive device 60 consists of a housing 68 which is rotationally symmetrical with respect to the axis 61 and which is filled with explosive 67.
- the explosive 67 is ignited by means of a plurality of detonating cords 69 which are embedded in a body 72 made of rigid foam. Due to the explosive effect, the sleeve 65 is severed at the location of the groove 66, as a result of which the sleeve 65 is closed in a straight line.
- the radar-reflecting body 63 is explosively welded onto a floor, its rear is cleaned and degreased with solvent and rubbed with an emery cloth. Subsequently, the body 63 with the explosive device 60 is placed on the rear of the projectile and the explosive 67 - preferably from a distance - is ignited.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Astronomy & Astrophysics (AREA)
- Aviation & Aerospace Engineering (AREA)
- General Physics & Mathematics (AREA)
- Remote Sensing (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Aerials With Secondary Devices (AREA)
- Radar Systems Or Details Thereof (AREA)
- Pressure Welding/Diffusion-Bonding (AREA)
Abstract
Description
Die Erfindung betrifft einen an einem Artilleriegeschoß axial anfügbaren Körper mit einem als Radarreflektor ausgebildeten Funktionsteil, gemäß dem Oberbegriff des Anspruchs. Ein derartiger Körper ist beispielsweise aus dem DE-Gebrauchsmuster 7 934 250 bekannt: in diesem Dokument wird beschrieben, daß der Radarreflektor als zusätzliches Bauteil am Boden des Geschosses anfügbar und darauf mittels Schrauben befestigbar ist. Diese Befestigungsart ist zwar sicher und einfach, erfordert jedoch das Bohren von Löchern und Schneiden von Gewinden in den Boden der Geschosse und somit eine entsprechende Vorbereitung, welche in einer Werkstatt durchgeführt werden muß.The invention relates to a body axially attachable to an artillery projectile with a functional part designed as a radar reflector, according to the preamble of the claim. Such a body is known, for example, from DE utility model 7 934 250: this document describes that the radar reflector can be attached to the floor of the projectile as an additional component and fastened thereon by means of screws. Although this type of fastening is safe and simple, it requires drilling holes and cutting threads in the floor of the storeys and therefore appropriate preparation, which must be carried out in a workshop.
Es ist daher die Aufgabe der Erfindung, einen radarreflektierenden Körper der eingangs erwähnten Art derart auszubilden, daß er am unveränderten normalen Artilleriegeschoß anfügbar und befestigbar ist, wobei die innen- und außenballistische Charakteristik des mit dem radarreflektierenden Körper ausgerüsteten Geschosses nur unwesentlich von der Charakteristik des normalen Geschosses abweichen darf und zudem das Ausrüsten mit wenigen, leichten Handgriffen und mit verhältnismäßig billigen Mitteln durchgeführt werden soll.It is therefore the object of the invention to design a radar reflecting body of the type mentioned in such a way that it can be attached and fastened to the unchanged normal artillery projectile, the interior and exterior ballistic characteristics of the projectile equipped with the radar reflecting body being only insignificant from the characteristics of the normal one Projectile may deviate and the equipment should also be carried out with a few easy steps and with relatively cheap means.
Die Aufgabe wird gelöst durch die im Anspruch angegebene Kombination von Merkmalen.The object is achieved by the combination of features specified in the claim.
Im folgenden wird die Erfindung unter Bezugnahme auf die Zeichnung näher beschrieben. Es zeigt
- Fig. 1 eine Explosionszeichnung eines Geschosses mit je einem vorne und hinten am Geschoß anfügbaren radarreflektierenden Körper,
- Fig. 2 eine Hülse mit Radarreflektor von Fig. 1 im Schnitt, und
- Fig. 3 und 4 je eine Schnittzeichnung der erfindungsgemäßen Variante der Ausbildung der Hülse.
- 1 is an exploded view of a projectile, each with a radar reflecting body that can be attached to the front and rear of the projectile,
- Fig. 2 shows a sleeve with the radar reflector of Fig. 1 in section, and
- 3 and 4 are each a sectional drawing of the variant of the embodiment of the sleeve according to the invention.
In Fig. 1 ist ein Artilleriegeschoß üblicher Art mit 1 bezeichnet. Ein erster radarreflektierender Körper 2 weist einen Boden 3 auf, welcher, etwa wie im DE-Gebrauchsmuster 7 934 250 beschrieben, als Mehrfach-Tripelspiegelreflektor ausgebildet ist. Am Boden 3 ist eine Hülse 4 angeformt, die dazu bestimmt ist, auf den Zapfen (Heckteil) des Geschosses aufgesteckt zu werden. Ein zweiter radarreflektierender Körper 5 weist eine Hülse 6 auf, die dazu bestimmt ist, auf die Bogenspitze (Bugteil) des Geschosses aufgesteckt zu werden, während - auf der Zeichnung nicht sichtbar - der vordere Teil 7 des Körpers 5 als Radarreflektor, z. B. als Fresnel-Linse oder als Van-Atta-Reflektor ausgebildet ist. Die beiden Körper 2 und 5 sind je um eine Längsachse 8, 8' drehsymmetrisch ausgebildet, wobei im aufgesteckten Zustand die Längsachse 8, 8' mit der Längsachse des Geschosses zusammenfällt. Auch sind die beiden Körper 2 und 5 in Fig. 1 als um die Längsachse 8, 8' rotationssymmetrische Körper dargestellt; im nachstehenden werden aber auch Varianten mit drehsymmetrischen, jedoch nicht rotationssymmetrischen Körpern beschrieben. Der als Mehrfach-Tripelspiegelreflektor ausgebildete Körper 2 besteht aus Metall, beispielsweise aus Messing oder aus der im DE-Gebrauchsmuster 7 934 250 erwähnten Aluminiumlegierung. Der als Fresnel-Linse oder als Van-Atta-Reflektor ausgebildete Körper 5 ist beispielsweise zweiteilig mit einer aus Messing oder Aluminiumlegierung bestehenden Hülse 6 und einem aus Kunststoff wie Epoxy- oder Polyurethanharz bestehenden vorderen Teil 7, der auf an sich bekannte Weise zur Bildung einer Fresnel-Linse oder eines Van-Atta-Reflektors mit einem metallischen Schichtmuster (z. B. aus Kupfer oder Aluminium) beschichtet ist.In Fig. 1, an artillery projectile of the usual type is designated by 1. A first
In Fig. 2 ist im Schnitt eine Variante eines auf einen Geschoßzapfen aufzusteckenden radarreflektierenden Körpers dargestellt. Dieser Körper ist einstückig aus Metall ausgebildet, es lassen sich jedoch ein Bodenteil 21 und eine Hülse 22 unterscheiden. Der Bodenteil 21 bildet auch den radarreflektierenden Funktionsteil; er ist zu diesem Zweck als Mehrfach-Tripelspiegelreflektor der im DE-Gebrauchsmuster 7 934 250 beschriebenen Art ausgebildet, was in der Zeichnung durch die Schnittgrenzen 23 und 24 dargestellt wird. Der gesamte Körper ist um eine Achse 25 drehsymmetrisch ausgebildet, während die Hülse 22 um diese Achse 25 rotationssymmetrisch ausgebildet ist, und zwar derart, daß sie auf den Geschoßzapfen genau passend aufsteckbar ist.In Fig. 2, a variant of a radar reflecting body to be plugged onto a projectile is shown in section. This body is made in one piece from metal, but a
In einer weiteren, in Fig. 3 dargestellten Variante wird im Schnitt ein auf die Bogenspitze eines Geschosses aufzusteckender radarreflektierender Körper dargestellt. Der gesamte Körper ist um die Achse 51 rotationssymmetrisch ausgebildet. Die Hülse 52 aus Metall ist mit einem aus Kunststoff bestehenden radarreflektierenden Funktionsteil 53 verklebt. An der Außenfläche 54 des Funktionsteiles 53 sind elektrisch leitende Streifen 55 angebracht, die zusammenwirkend eine Fresnel-Linse bilden. Der Innenteil 56 der Hülse ist derart geformt, daß er auf die Bogenspitze des Geschosses genau paßt. Der Innenteil 57 des Funktionsteiles 53 wird zur Aufnahme des Kopfzünders des Geschosses mit einer entsprechenden Ausnehmung versehen. An der Außenseite 58 der Hülse 52 ist in einem um die Achse 51 im wesentlichen rotationssymmetrisch angeordneten Wulst eine Sprengschnur 59 vorgesehen, deren Zündung nach dem Aufstekken der Hülse auf das Geschoß auf an sich bekannte Weise durch Aufpressen und gegebenenfalls durch Sprengschweißen oder Elektroentladungsschweißung eine formschlüssige Verbindung der Hülse 52 mit der Bogenspitze des Geschosses bewirkt.In a further variant shown in FIG. 3, a radar reflecting body to be plugged onto the arch tip of a projectile is shown in section. The entire body is rotationally symmetrical about the
In Fig. 4 ist im Halbschnitt ein auf den Geschoßzapfen aufzusteckender radarreflektierender Körper 63 sowie eine daran angeordnete Sprengvorrichtung 60 dargestellt. Mit Hilfe der Sprengvorrichtung 60 wird der Körper 63 nach dem als »Sprengschweißen« bekannten Verfahren am Geschoß befestigt. Der Körper 63 ist einstückig aus Metall, sein Bodenteil 64 ist als Mehrfach-Tripelspiegelreflektor ausgebildet, was in der Zeichnung durch die Schnittgrenzen 70 und 71 dargestellt wird. Eine Hülse 65 des radarreflektierenden Körpers 63 besitzt auf ihrer Außenseite 73 eine ringförmige Nut 66.4 shows a half section of a
Die Sprengvorrichtung 60 besteht aus einem zur Achse 61 rotationssymmetrischen Gehäuse 68, das mit Sprengstoff 67 gefüllt ist. Die Zündung des Sprengstoffs 67 erfolgt über mehrere Sprengschnüre 69, die in einem aus Hartschaumstoff ausgebildeten Körper 72 eingebettet sind. Durch die Sprengwirkung wird die Hülse 65 an der Stelle der Nut 66 durchtrennt, wodurch ein geradliniger Abschluß der Hülse 65 erreicht wird. Vor dem Sprengschweißen des radarreflektierenden Körpers 63 auf ein Geschoß wird dessen Heck mit Lösungsmittel gereinigt und entfettet und mit Schmirgeltuch abgerieben. Anschließend wird der Körper 63 mit der Sprengvorrichtung 60 auf das Heck des Geschosses aufgesetzt und der Sprengstoff 67 - vorzugsweise aus einiger Distanz - gezündet.The
Claims (1)
- A body (2, 5) axially attachable to an artillery shell (1) and axially symmetrical round a longitudinal axis (8, 8'; 25; 51; 61), with a functional part (3, 7) constructed as a radar reflector, and a sleeve (4, 6; 22; 52; 65) rotationally symmetrical round the longitudinal axis and constructed in one piece with the functional part, which sleeve is intended to be mounted on the shell, characterised in that near or on the outside (58, 73) of the sleeve (52, 65) there is arranged at least one explosive device (59, 60) substantially rotationally symmetrical round the longitudinal axis (51, 61), which is specifically intended to make a form-locking connection of the sleeve and the shell when it es ignited.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT81107112T ATE10148T1 (en) | 1980-12-02 | 1981-09-10 | RADAR REFLECTOR FOR AN ARTILLERY SHELL. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH889180 | 1980-12-02 | ||
CH8891/80 | 1980-12-02 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0053658A2 EP0053658A2 (en) | 1982-06-16 |
EP0053658A3 EP0053658A3 (en) | 1982-09-01 |
EP0053658B1 true EP0053658B1 (en) | 1984-10-31 |
Family
ID=4345922
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP81107112A Expired EP0053658B1 (en) | 1980-12-02 | 1981-09-10 | Radar reflector for an artillery projectile |
Country Status (7)
Country | Link |
---|---|
US (2) | US4446792A (en) |
EP (1) | EP0053658B1 (en) |
JP (1) | JPS57120098A (en) |
AT (1) | ATE10148T1 (en) |
CA (1) | CA1162277A (en) |
DE (1) | DE3166984D1 (en) |
NO (1) | NO813468L (en) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3030072A1 (en) * | 1980-08-09 | 1986-06-26 | Rheinmetall GmbH, 4000 Düsseldorf | MOLDING MOLD, MATERIAL FOR MAKING THE SAME AND METHOD FOR ARRANGING THE MOLDING MOLD IN THE EXTENSION AREA OF AN AIRBULLET MADE OF A HEAVY METAL SINTER ALLOY |
GB8603206D0 (en) * | 1986-02-10 | 1986-03-19 | Ca Minister Nat Defence | Projectile |
US5140329A (en) * | 1991-04-24 | 1992-08-18 | Lear Astronics Corporation | Trajectory analysis radar system for artillery piece |
US20170138710A1 (en) * | 2013-03-21 | 2017-05-18 | Nostromo Holdings, Llc | Optically tracked projectile |
IL248966B2 (en) | 2016-11-14 | 2023-02-01 | Elta Systems Ltd | Methods and systems for detecting and/or tracking projectile |
WO2019010040A2 (en) * | 2017-06-26 | 2019-01-10 | SUPERIOR SHOOTING SYSTEMS, INC. (TX Corp.) | Enhanced projectile, cartridge and method for creating precision rifle ammunition with more uniform external ballistic performance and enhanced terminal ballistic performance |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1348590A (en) * | 1962-11-30 | 1964-01-10 | Armor-piercing projectiles |
Family Cites Families (25)
Publication number | Priority date | Publication date | Assignee | Title |
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US26685A (en) * | 1860-01-03 | Composition for mixing with paints | ||
CH147838A (en) * | 1930-07-14 | 1931-06-30 | Rheinische Metallw & Maschf | Method of attaching caps or jackets to armored projectiles. |
US2343344A (en) * | 1941-12-26 | 1944-03-07 | Russell G Thompson | Projectile |
US2367206A (en) * | 1942-03-11 | 1945-01-16 | Du Pont | Method of joining objects |
BE540828A (en) * | 1948-02-12 | |||
US3076408A (en) * | 1958-06-11 | 1963-02-05 | Borg Warner | Controlled fracturing of solids by explosives |
US3062142A (en) * | 1958-09-16 | 1962-11-06 | Du Pont | Explosive method for severing nonductile pipes |
FR1343590A (en) * | 1961-09-14 | 1963-11-22 | Carlisle Chemical Works | Oxygenated stabilizers |
US3230531A (en) * | 1961-11-24 | 1966-01-18 | Gen Electric | Broadband streamlined radar reflector |
FR1491229A (en) * | 1966-01-27 | 1967-08-11 | Telecommunications Sa | Improvement in remote control of self-propelled vehicles |
DE1578209A1 (en) * | 1966-12-12 | 1971-03-11 | Rheinmetall Gmbh | Decay bullet for practice cartridges |
GB1225135A (en) * | 1967-12-01 | 1971-03-17 | ||
US3654553A (en) * | 1970-07-01 | 1972-04-04 | Us Army | Remotely sensing optical tachometer |
US3757632A (en) * | 1970-09-28 | 1973-09-11 | Gen Robotics Inc | Ammunition tracer system |
US3681690A (en) * | 1970-11-10 | 1972-08-01 | Us Army | Optical angular accelerometer |
US3872707A (en) * | 1971-09-28 | 1975-03-25 | Amp Inc | Crimped connection for flared end conduit |
FR2191718A5 (en) * | 1972-06-30 | 1974-02-01 | France Etat | |
US3814019A (en) * | 1972-07-26 | 1974-06-04 | Us Army | Expansile protective cap for fluidic ordnance fuzes |
US3798653A (en) * | 1973-03-30 | 1974-03-19 | Us Army | Cavity excited conical dielectric radiator |
US3914767A (en) * | 1974-06-11 | 1975-10-21 | Us Army | Monolithic, electrically small, multi-frequency antenna |
DE2634518C2 (en) * | 1976-07-31 | 1986-04-17 | Dynamit Nobel Ag, 5210 Troisdorf | Projectile with at least one pyrotechnic set, in particular a tracer set |
NO140947C (en) * | 1977-12-21 | 1979-12-12 | Kongsberg Vapenfab As | COMBINATION STANDS FOR MISSILES. |
US4257719A (en) * | 1978-04-17 | 1981-03-24 | Vickers Limited | Underwater pipelines |
CH636437A5 (en) * | 1978-12-13 | 1983-05-31 | Contraves Ag | Artillery round having a radar reflector |
DE3038087A1 (en) * | 1980-10-09 | 1982-05-27 | Rheinmetall GmbH, 4000 Düsseldorf | ARROW-STABILIZED RIFLE BULLET (PENETRATOR) |
-
1981
- 1981-09-10 AT AT81107112T patent/ATE10148T1/en not_active IP Right Cessation
- 1981-09-10 EP EP81107112A patent/EP0053658B1/en not_active Expired
- 1981-09-10 DE DE8181107112T patent/DE3166984D1/en not_active Expired
- 1981-10-14 NO NO813468A patent/NO813468L/en unknown
- 1981-11-09 US US06/319,707 patent/US4446792A/en not_active Expired - Fee Related
- 1981-11-13 CA CA000390064A patent/CA1162277A/en not_active Expired
- 1981-12-01 JP JP56191880A patent/JPS57120098A/en active Pending
-
1984
- 1984-02-23 US US06/582,754 patent/US4547949A/en not_active Expired - Fee Related
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1348590A (en) * | 1962-11-30 | 1964-01-10 | Armor-piercing projectiles |
Non-Patent Citations (1)
Title |
---|
INTERNATIONAL CONFERENCE ON ANTENNES AND PROPAGATION, Part 1: Antennes, 28.-30.November 1978, The Institution of Electrical Engineers, Savoy Place, London, G.B. A.R. SINDORIS et al.: "The spiral slot - A unique microstrip antenna", Seiten 150-154 * |
Also Published As
Publication number | Publication date |
---|---|
CA1162277A (en) | 1984-02-14 |
EP0053658A3 (en) | 1982-09-01 |
NO813468L (en) | 1982-06-03 |
JPS57120098A (en) | 1982-07-26 |
EP0053658A2 (en) | 1982-06-16 |
ATE10148T1 (en) | 1984-11-15 |
DE3166984D1 (en) | 1984-12-06 |
US4547949A (en) | 1985-10-22 |
US4446792A (en) | 1984-05-08 |
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Legal Events
Date | Code | Title | Description |
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