Dispensers for viscous materials.

摘要

A dispenser for dispensing viscous material from a cartridge (40) includes a keep (34) having the cartridge and a pneumatic actuator (10) arranged to force pistons in the cartridge to push the material through a dispensing aperture in an outlet boss (44). The keep (34) is pivotably mounted about a transverse axis (36) to rotate between a cocked position for use and an uncocked position in which the cartridge (40) can be loaded in the keep (34). The axis of rotation of the keep is misaligned with respect to the axis of the pistons in the cartridge in order to urge the keep into the cocked position when a dispensing force is applied.