Abstract: A grease gun (1) with improved handling includes a screw coupling (2) for coupling a screw cartridge (7, 8). The screw coupling (2) encompasses at least two different coupling threads (5, 6) for coupling screw cartridges (7, 8) that include different mating threads (9, 10).

Abstract: A delivery device for delivering a fluid medium having a delivery drive, a pump device and a scoop device. The delivery drive is arranged at a first end of a pipe, and the pump device and the scoop device are arranged inside the pipe. The scoop device includes a foot valve, which is arranged at a second end of the pipe and controls an inlet for an inflow of medium into a piston chamber. A piston, which sub-divides the piston chamber into an inflow area and a discharge area, is arranged in the piston chamber. The inflow area and the discharge area are or can be connected via the piston, and the piston, via a piston rod, is movable between a retracted position and an extended position inside the piston chamber by the delivery drive.

Abstract: For a lubricant press (1), a follower piston (13) is proposed that can be inserted into a cartridge (4) and is matched to a closing wall (6) of a cartridge holder (3), such that the follower piston (13) in the used-up cartridge (4) lies against the closing wall (6) in a planar manner.