EP0485040B1 - Cible - Google Patents
Cible Download PDFInfo
- Publication number
- EP0485040B1 EP0485040B1 EP91250203A EP91250203A EP0485040B1 EP 0485040 B1 EP0485040 B1 EP 0485040B1 EP 91250203 A EP91250203 A EP 91250203A EP 91250203 A EP91250203 A EP 91250203A EP 0485040 B1 EP0485040 B1 EP 0485040B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- target
- hdpe
- ldpe
- disc
- pane
- 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 - Lifetime
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F41—WEAPONS
- F41J—TARGETS; TARGET RANGES; BULLET CATCHERS
- F41J1/00—Targets; Target stands; Target holders
- F41J1/01—Target discs characterised by their material, structure or surface, e.g. clay pigeon targets characterised by their material
Definitions
- the invention relates to a target which is to be used in particular for military target practice.
- GB-A-1473879 proposes to eliminate the deficiencies of the pure HDPE by adding talc to the material in order to improve the dimensional stability and the hardness of the material.
- the HDPE should be mixed with less than 10% talc.
- the proposal of GB-A-1473879 could find no entry into practice, because the addition of talc reduces the bombardment ability of the pane. In particular in lower temperature ranges, there are blisters that make the pane unusable very quickly.
- a material containing talc is not recyclable and therefore cannot meet another, increasingly important requirement for the material.
- Plywood has thus remained the most common material for military shooting targets in practice.
- the invention is now intended to provide an improved shooting target which enables high numbers of shots to be fired without demonstrating the disadvantages described above.
- the invention achieves this goal in that the disk is made of a polyethylene mixture consisting of 70-90% HDPE and 30-10% LDPE.
- the invention is based on the knowledge that this polyethylene mixture is surprisingly suitable as a material for shooting targets.
- This material does not splinter and shows a very advantageous design of the bullet channel.
- the penetration channel has an outlet opening which is significantly smaller than the inlet side and which in some cases is even completely closed again. This applies even in the case of ricochets. Apparently, this formation of the bullet channel goes back to melting and flow processes, which are triggered by the frictional heat generated by the projectile as it passes through the pane.
- the main advantage of this design of the bullet channel is that the target withstands very high numbers of shots (more than 1000 shots) before it has to be replaced and that the risk of premature breakout of larger perforated areas is practically eliminated by closely spaced bullets and / or ricochets . Furthermore, they are shot Slices are no waste, but can be reprocessed into new slices via recycling.
- Military shooting targets e.g. NATO battle disks are usually designed to mimic different positions of an attacking enemy, e.g. a rifling rifle, a kneeling rifle, a lying rifle, etc.
- an example of such a target 1 is shown in outline.
- Another example is the disk 1a according to FIG. 4.
- the material of this disc is a polyethylene mixture of HDPE as the main component and LDPE as the secondary component.
- the mixing ratio is expediently in the range of 70-90% HDPE and 30-10% LDPE, a ratio of approximately 80% HDPE to 20% LDPE having proven particularly suitable.
- the material is preferably further processed in the form of extruded sheets by sawing or cutting or punching out the disk from the sheets.
- Targets for military target practice are usually in a prescribed basic color, e.g. olive, kept. While a target made of conventional material has to be painted in this basic color, the invention enables a more elegant and economical way of coloring the polyethylene mixture in the required color already during its manufacture. This eliminates one step in the manufacture of the disc.
- a prescribed basic color e.g. olive
- the invention enables a more elegant and economical way of coloring the polyethylene mixture in the required color already during its manufacture. This eliminates one step in the manufacture of the disc.
- a military shooting target must often also have design features with which, for example, as indicated in FIG. 4, face 13, hands 14 and weapons 15 are identified on a target.
- This is achieved in the pane according to the invention, for example, by covering the corresponding areas with colored film, preferably a self-adhesive film which on the one hand adheres well in all weather conditions, but on the other hand can also be removed easily and without residue from the pane.
- Such design features can also be applied by applying paint, e.g. be screen printed.
- brackets In the shooting range there are foldable brackets, as shown schematically in FIG. 3, in each case sunk to the surface of the stand.
- These brackets normally comprise a clamping device which is composed of a holding bracket 2 and a clamping bracket 3 and which is connected to a pivot axis 5 via two arms 4.
- a motorized adjusting device 6 acts on the pivot axis 5.
- the disc 1 is clamped at its lower end by means of a clamping nut 7 between the brackets 2 and 3, wherein the recess 8 serves to receive the screw thread 7a, and its upper region protrudes from the standing surface (indicated by the broken line 9 in FIG. 1). In the event of a hit, the disc tilts backwards about the pivot axis 5 and is then erected again using the adjusting device 6.
- the disc can also be set up in any other way, for example, used freestanding.
- FIG. 2 shows the typical configuration of the through-channel 10 of such a hit.
- a bullet of caliber K creates a bullet channel 10 which is somewhat larger on the inlet side than K and which narrows sharply on the outlet side (and in some cases even completely closes).
- this phenomenon apparently stems from the fact that the material, as a result of the high frictional heat generated by the projectile passing through, softens in the area of the bullet channel and is pressed onto the other side of the pane. There, the pushed-off material cools down again and flows back into the lead-through channel during cooling, as a result of which the lead-through channel closes again or at least is greatly narrowed. The material is therefore not lost in the area of the penetration channel, but remains advantageously available for closing the channel.
- a particularly desirable consequence of this formation of the bullet channel is that the webs keep the full material thickness of the disc between closely adjacent bullet areas. This means that practically no larger perforated areas can be "shot out" of the disk.
- a dense ring of bullets 12 is shown, within which a surface area 11 is located. This surface area 11 would be with a conventional pane made of plywood long ago led to a larger perforated area, but is still completely stable in the pane according to the invention. Because of this, this target can be exposed to very high numbers of shots (more than 1000 shots) before it needs to be replaced. In a test test of a relatively small target ("kneeling shooter") it was found that it was still fully usable after more than 1,100 hits (long-range machine gun fire). This underlines the enormous advantage of the invention.
- pane is finally shot, another important advantage of the invention is that there is no waste after the exchange. Rather, the material can be recycled into new discs.
- the foils designing the pane can be removed easily and completely (it should also be possible to recycle them appropriately) or that the paint application does not interfere with recycling.
- the fact that the material (polyethylene mixture) of the pane is colored and that no further coloring is necessary is also advantageous.
- care must be taken to ensure that only the panes according to the invention are used in recycling. Additions of other plastics, e.g. PVC components can lead to outbreaks when shooting the panes from recycled material, especially in the cold.
- the shooting targets are quickly ready to fire again after they have been raised so that the target practice can be continued quickly. Since the panes (regardless of the material) are relatively thin-walled fabrics, they can easily vibrate when they are raised. Such a swinging of the target would mean a significant delay since the target must be at rest for the target practice.
- the disc is cut wider in its lower third during manufacture, which results in a widening of the edge in this area, which is then bent 90 ° backwards to form a bend 16 becomes.
- This bend which can easily be produced by hot working, provides such a strong additional stabilization that post-straightening practically no longer occurs.
- Fig. 5 shows such a disc 10 in the clamped state.
- the invention has been explained above using the example of such military shooting targets which are fired at with pistols, rifles, machine guns or the like. However, the invention can also be used with all other types of discs, be it military or non-military discs. In this context, mention should be made of, for example, tank dummies that are exposed to large-caliber projectiles or target shooting targets.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Crystals, And After-Treatments Of Crystals (AREA)
- Valve Device For Special Equipments (AREA)
- Luminescent Compositions (AREA)
- Thermistors And Varistors (AREA)
- Inorganic Insulating Materials (AREA)
Claims (6)
- Cible, particulièrement pour des exercices de cible militaires, en polyéthylène, caractérisée en ce qu'elle est fabriquée de mélange de polyéthylène, composée de 70 - 90 % de HDPE (polyéthylène haute densité) et de 30 - 10 % de LDPE (polyéthylène basse densité).
- Cible suivant la revendication 1, caractérisée en ce qu'il est prévu dans le mélange de polyéthylène du HDPE (polyéthylène haute densité) à 80 % et du LDPE (polyéthylène basse densité) à 20 %.
- Cible suivant les revendications 1 à 2, caractérisée en ce que le mélange de polyéthylène est unicolore.
- Cible suivant les revendications précédentes, caractérisée en ce qu'elle est découpée ou poinçonnée dans une feuille composée du mélange de polyéthylène.
- Cible suivant une des revendications précédentes, caractérisée en ce qu'elle est collée avec des feuilles colorées pour la simulation des caractéristiques de silhouette.
- Cible suivant une des revendications précédentes, caractérisée en ce qu'elle est munie dans sa partie inférieure d'un rebord tourné vers l'arrière.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE9015244U | 1990-11-06 | ||
DE9015244U DE9015244U1 (de) | 1990-11-06 | 1990-11-06 | Schießscheibe |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0485040A1 EP0485040A1 (fr) | 1992-05-13 |
EP0485040B1 true EP0485040B1 (fr) | 1993-08-18 |
Family
ID=6859090
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP91250203A Expired - Lifetime EP0485040B1 (fr) | 1990-11-06 | 1991-07-19 | Cible |
Country Status (7)
Country | Link |
---|---|
EP (1) | EP0485040B1 (fr) |
AT (1) | ATE93312T1 (fr) |
AU (1) | AU8704191A (fr) |
CA (1) | CA2055018A1 (fr) |
DE (2) | DE9015244U1 (fr) |
DK (1) | DK0485040T3 (fr) |
ES (1) | ES2044681T3 (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE202009009551U1 (de) | 2009-07-10 | 2009-11-05 | Ingenieurbüro für Technologie-Transfers GmbH | Zielscheibenanordnung mit einer Zielscheibe und einem Heizelement |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE9406892U1 (de) * | 1994-04-23 | 1995-08-24 | Ingenieurbüro für Technologie-Transfers GmbH, 31535 Neustadt | Zielscheibe mit einer Wärmebild-Darstellung |
US5669610A (en) * | 1995-11-22 | 1997-09-23 | Salyers; Edward Francis | Human assailant simulator target |
WO2024127424A1 (fr) * | 2022-12-12 | 2024-06-20 | INDIAN INSTITUTE OF TECHNOLOGY MADRAS (IIT Madras) | Matériaux à gradient fonctionnel métalliques et procédés de fabrication associés |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3516670A (en) * | 1968-05-23 | 1970-06-23 | Rai Res Corp | Polyethylene target with waffle-type rigidifying structure |
GB1473879A (en) * | 1974-06-28 | 1977-05-18 | Australasian Training Aids Pty | Targets |
US4462598A (en) * | 1981-12-14 | 1984-07-31 | Chalin Manuel L | Vanishing target and arrowhead projectile therefor |
US4565376A (en) * | 1985-03-28 | 1986-01-21 | Lionel Croll | Animal simulating three dimensional archery target and method of manufacture |
DE8607999U1 (de) * | 1986-03-22 | 1987-07-02 | Hüls Troisdorf AG, 53840 Troisdorf | Schießscheibe zu Übungs- und Sportzwecken |
-
1990
- 1990-11-06 DE DE9015244U patent/DE9015244U1/de not_active Expired - Lifetime
-
1991
- 1991-07-19 EP EP91250203A patent/EP0485040B1/fr not_active Expired - Lifetime
- 1991-07-19 ES ES91250203T patent/ES2044681T3/es not_active Expired - Lifetime
- 1991-07-19 DK DK91250203.6T patent/DK0485040T3/da active
- 1991-07-19 DE DE9191250203T patent/DE59100305D1/de not_active Expired - Lifetime
- 1991-07-19 AT AT91250203T patent/ATE93312T1/de not_active IP Right Cessation
- 1991-11-05 AU AU87041/91A patent/AU8704191A/en not_active Abandoned
- 1991-11-06 CA CA002055018A patent/CA2055018A1/fr not_active Abandoned
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE202009009551U1 (de) | 2009-07-10 | 2009-11-05 | Ingenieurbüro für Technologie-Transfers GmbH | Zielscheibenanordnung mit einer Zielscheibe und einem Heizelement |
Also Published As
Publication number | Publication date |
---|---|
DE59100305D1 (de) | 1993-09-23 |
CA2055018A1 (fr) | 1992-05-07 |
DE9015244U1 (de) | 1991-08-14 |
EP0485040A1 (fr) | 1992-05-13 |
ATE93312T1 (de) | 1993-09-15 |
AU8704191A (en) | 1992-05-14 |
ES2044681T3 (es) | 1994-01-01 |
DK0485040T3 (da) | 1994-03-14 |
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