摘要:
The invention relates to a diffusion alloyed iron powder wherein tungsten W is bonded to the surfaces of the particles of an iron or iron-based powder, the diffusion alloyed iron powder comprises by weight-%: 30-60 W, balance essentially only iron and unavoidable impurities.
摘要:
A composite lead-free bullet is disclosed comprising a heavy constituent selected from the group of tungsten, tungsten carbide, carballoy, and ferro-tungsten and a second binder constituent consisting of either a metal alloy or a plastic blend.
摘要:
A shotgun shell magazine to be received within a mil-spec magazine of an M16/AR-15 mil-spec firearm is disclosed. The magazine comprises a magazine body having an open top end defining a cavity configured to receive one or more shotgun shells. The magazine body includes a feed lip which partially occludes the open top end and has a length between 10% and 25% of the length of the open top end. A follower having a ramped upper surface resides within the cavity. The follower is biased to direct the shotgun shells toward the open top end until the primer end of a top most shotgun shell engages the feed lip. The top most shotgun shell is angled with respect to the open top end and at least a portion of the closed end of the top most shotgun shell lies above a plane created by the open top end.
摘要:
Methods and apparatus according to various aspects of the present invention comprise a propelling system for propelling projectiles with variable velocity, In one embodiment, a cartridge comprises a cartridge case, the propelling system, and the projectile attached to the cartridge case.
摘要:
The invention relates to a shotgun cartridge case and to a shotgun cartridge made therefrom. The case is made in one piece from injection-moulded plastic material and has a cylindrical wall and a base portion with a central opening for a primer. A set of peripherally situated heels (18) is attained by means of grooves extending from the end plane of the base portion, preferably a pair of concentric circular grooves (13, 14) and radial grooves (15) connecting the circular grooves, which grooves have a substantial extension in the axial direction of the case, preferably at least about 2/3 of the minimum axial material thickness of the base portion. These heels absorb the powder charge gas pressure and execute a translatory displacement in the axial direction of the case without the primer hole being deformed, whereby leakage of powder charge gases through the primer hole and displacement of the primer itself are avoided. In one embodiment, the primer opening is enlarged at its region connecting to the powder charge chamber and forms a cavity for receiving an adhesive means in the form of a collar adhered to the primer, thereby providing further insurance against displacement of the primer due to the powder charge gases.
摘要:
The invention relates to an assembly (6) of a number of similar insertion bodies (1), wherein each insertion body (1) comprises an RFID tag (2) as an electronic or electromagnetic transmission and/or receiving device. The insertion bodies (1) are connected to each other alongside one another or behind one another via one or more connecting elements (28), wherein the connecting elements (28) are designed to be mechanically broken off (4) by the application of an external force (F) to an individual insertion body (1). In this way same can contiguously form a linear arrangement as a type of magazine (6) for pneumatic or electric nail or bolt guns (20) acting as the insertion device in order to be inserted into pallets (25) for the identification thereof.
摘要:
A lead-free ferromagnetic article is disclosed. The article is a compacted composite having a heavy more dense constituent that is preferably ferrotungsten and a less dense second constituent that is either a metal alloy or a polymer. The ferromagnetic constituent is present in an amount sufficient to impart the article with ferromagnetism. The ferromagnetic property allows fragments of the article, such as a projectile, bullet or shaped charge liner to be separated from dirt or other environments.
摘要:
La bourre de plastique monobloc (13) employée pour la fabrication de cartouches à plombs est d'abord préformée par extrusion au moyen d'une filière (1) pour donner une paraison (6) qui est ensuite finalement mise en forme dans un moule par soufflage (7a7b) au moyen d'air comprimé. L'air comprimé est introduit au moyen d'une aiguille (8) à travers le moule de soufflage à l'intérieur de la paraison (6). Ceci rend superflu le moule d'injection coûteux nécessaire jusqu'à maintenant et, en outre, le procédé peut être réalisé en continu.
摘要:
An ammunition cartridge (50) includes: a basewad (52) disposed within a tube (51) proximate the aft end (56) of the tube (51); a projectile wad (92) disposed within the tube (51) proximate a fore end (59) of the tube (51); a propellant charge (96) disposed within a chamber (94) formed between the projectile wad (92) and the basewad (52); and a projectile (100) disposed within the tube (51) between a forward facing surface (101) of the projectile wad (92) and the fore end (59) of the tube (51). The aft end of the projectile wad (92) has a powder cup skirt (77) formed thereon, and a chamfer (81) is formed around an outer perimeter of a lip (57) of the powder cup skirt (77). The chamfer (81) allows the powder cup skirt (77) to be slidably received within a skirt (80) of the basewad (52) to form the chamber (94). The chamfer (81) provides a clearance at the powder cup skirt lip (57), which helps to insure undisturbed entry into the mouth of the basewad skirt (80).