Abstract: A static mixer apparatus providing a mixer and releasably affixed dispensing accessory in which the static mixer outlet tip has a dispensing accessory mounting structure to maintain orientation of the accessory about an axis defined by the structure, the structure having a generally cylindrical accessory mounting boss coaxial with the axis and defining a dispensing outlet for mixed material from the mixer and a projection extends radially from said boss for engagement with a cooperating feature of the dispensing accessory to determine and maintain at least one desired orientation of that dispensing accessory relative to the structure about the axis. The dispensing accessory is preferably asymmetric.

Abstract: A dispenser for manually dispensing pasty, semi-fluid products, from a cartridge, that must be applied with control and accuracy, incorporates an integral trigger and pawl plunger drive mechanism, in which the drive is activated by a trigger or actuator. A floating gripper is disposed on the plunger to release dispensing pressure in the cartridge to prevent drooling after the completion of dispensation.