| 摘要 |
The invention relates to a dispensing cartridge adapted to discharge material therefrom to a receiving member during a dispensing operation. The cartridge includes an inner tubular member with an inner port therein. The cartridge also includes an outer tubular member with an inner surface, an outer surface, and an outer port therein. The inner tubular member is mounted rotatably within the outer member and is in sliding contact therewith. A cover is coupled to the inner tubular member and is adapted to rotate the inner tubular member in response to movement of the cover from a first position, wherein the inner port and the outer port are aligned with one another to define an exit aperture for discharging material from the cartridge to the receiving member, to a second position, wherein the inner port and the outer port are misaligned from one another to define a closed position preventing discharge of material from the cartridge. The cartridge further includes a receiver for receiving material contained in the cartridge during a dispensing operation and a housing having inner and outer tubular members. The inner member is concentrically mounted to and is in sliding contact within the outer member for either clockwise or anti-clockwise rotation therewith. Each member has a port. The ports are arranged to align with one another when the inner member is rotated in a first direction. The ports further are arranged to misalign with one another when the inner member is rotated in an opposed direction, to define a closed off position desirable prior to removal of the cartridge from the receiver. |
