The present invention relates to dispensers, and more particularly to dispensers comprising dispensers and dose counters for dispensing a dose of gaseous, gas borne or droplet material from a material source. . The present invention thus provides a dispenser for dispensing a dose of a gaseous, gas borne or droplet material from a material source, the dispenser comprising: A body comprising: a body having a mouthpiece； A joining member slidably disposed in the body for movement in the longitudinal axis of the body for releasing a dose of a substance from a material source, the joining member comprising a socket for receiving a spout of the material source； A dispenser driver for moving the engagement member in the longitudinal direction of the body to release a dose of material from a material source, the dispenser driver comprising a pivot shaft and a cam disposed on the shaft, wherein rotation of the pivot shaft includes: A dispenser driver disposed in the body to rotate the cam and to force the joining member to move the joining member in the longitudinal direction； And a cam follower slidably disposed in the body, the cam follower comprising a base and a substantially rigid protrusion extending from the base, the protrusion being disposed between the dispenser driver and the joining member, The force exerted on the protrusion by the cam of the dispenser driver causes the cam follower to slidably move in the longitudinal axis direction of the body and applies a force to the joining member to release a dose of material from a material source. It provides a dispenser comprising a.본 발명은 디스펜서들에 관한 것이며, 특히 기체성(gaseous), 기체-함유(gas borne) 또는 액적 물질의 투여량을 물질원으로부터 토출하기 위한 디스펜서들 및 투여량 카운터들을 포함하는 디스펜서들에 관한 것이다.따라서 본 발명은: 기체성(gaseous), 기체-함유(gas borne) 또는 액적(droplet) 물질의 투여량을 물질원으로부터 토출(dispense)하기 위한 디스펜서로서, 상기 디스펜서는: 물질원을 수용하기 위한 몸체로서, 마우스피스를 구비한 몸체； 물질원으로부터 물질의 투여량을 방출하기 위한 상기 몸체의 종축 내의 움직임을 위해 상기 몸체 내에 슬라이드 가능하게 배치된 접합 부재로서, 물질원의 분출구(spout)를 수용하기 위한 소켓을 포함하는 접합 부재； 물질원으로
