| 摘要 |
In a sheet-separating suction device a suction piston carrying a suction nozzle is reciprocally movable in a sleeve secured to a housing of the device. An additional piston having at least one throttle is reciprocally movable in another sleeve also secured to the housing. The additional piston cooperates with the suction piston so as to brake the latter in its movement to an initial position and prevent impacts of the suction piston against the wall of the housing. |
