Abstract: A modular, semi-disposable patch pump for conducting a medical therapy includes a pump unit releasably connected to a reservoir unit by means of a bayonet connection; and a housing design for supporting both reliability and ease of use of said connection.

Abstract: When cartridges are delivered from a stationary cartridge magazine to an elevatable firing weapon, it is customary to use a deflection or guidance unit, by which the cartridges can be reliably delivered to the elevatable firing weapon in every position of the latter. The cartridges are delivered to the elevatable firing weapon in a telescopic guide or infeed channel. With large elevation of the elevatable firing weapon, this telescopic guide channel is substantially contracted. On the other hand, this telescopic guide channel is substantially extended when the elevation of the elevatable firing weapon is relatively small. In the telescopic guide channel there is provided a bucket chain for conveying cartridges. The individual buckets of this bucket chain are interconnected by knee joints, so that the bucket chain can likewise be extended and contracted. One end of the telescopic guide channel is mounted at the stationary cartridge magazine and the other end is mounted at the elevatable firing weapon.

Abstract: In a firing weapon with an elevatable weapon barrel, it must be possible to fix or lock the weapon barrel in each desired position. For this purpose, known firing weapons are equipped with braking devices in which large frictional forces occur, thereby making it necessary to use servo-mechanisms. In accordance with the invention, the elevation of the weapon barrel is fixed or locked by means of a cylinder and a piston. The piston comprises a closeable through-passage opening through which a pressure medium flows, as long as the through-passage opening is open between a chamber located on one side or face of the piston into an other chamber located on the other side or face of the piston. The through-passage opening is closeable for fixing or locking the weapon barrel at a predeterminate elevation.