Patent ID: 8071053

Claim:
A dispensing apparatus comprising: a dispensing arm that is rotatable, includes a drawing-and-discharging unit held at a distal end, and conveys a fluid drawn by the drawing-and-discharging unit at a predetermined drawing position to a predetermined discharge position; a driving motor; a driving transmission unit having a drive shaft, a driving pulley and a driving belt, the driving pulley is rotatably coupled to the to the dispensing arm by the driving belt; and a transmission/buffering unit having a crank shaft, a crank rod, a crank rod slider that is rotatable and has a through hole in which one end of the crank rod is inserted and fitted, and a crank lever that is rotatably coupled at one end with the driving motor and the other end is coupled to the crank rod through a crank pin, the crank rod has one end slidably inserted and fitted in the through hole of the crank rod slider and another end is coupled to the crank pin, the crank rod rotates around a rotating axis of the crank rod slider to rotate the crank rod slider; wherein the acceleration of the dispensing arm is gradual when the dispensing arm starts rotating from the predetermined drawing position and deceleration of the dispensing arm is gradual when the dispensing arm stops at the predetermined discharge position.