Abstract: An apparatus for extruding the stored fluid contents of a single cylindrical cartridge which has a side wall and a longitudinal partition wall which defines semicylindrical chambers within the cartridge, the apparatus comprising a cylindrical tube which has a closed end wall and an open end with an end with a bevelled edge. A pair of semicylindrical sleeve pistons are concentrically positioned in a spaced parallel relation within the tube, with the space between the pistons being coplanar with the partition wall to permit the sliding of the tube longitudinally along the external periphery of the cartridge. The pistons are each mounted on the closed end wall, within the tube, and include upstanding free ends which are adapted to engage corresponding slidable semicircular plungers that function as seals within the corresponding chambers of the cartridge.

Abstract: A container for storing and dispensing various fluid substances with a cylindrical housing that is divided into two chambers by a partition wall positioned along the longitudinal axis of the housing. Each chamber includes a closed end with an outlet opening and an open opposite end. A semicircular shaped plunger fits in the chamber that is slidably displaceable towards the outlet opening. A first portion of each plunger is formed with a chamber facing the fluid substance stored in the chamber. An outside edge of the first portion forms a lip seal between the plunger and the interior side wall of the chamber. On the opposite side of the plunger a second portion includes several ribs that are adapted to receive a pressure plate against which an operating pressure is applied using a known pressure device. Each outlet opening is hermetically sealed by a plug seal held in place by a collar nut.