发明申请
US20080073096A1 Hollow Piston Hammer Device with Air Equilibration and Idle Openings 失效
空气平衡和空转的空心活塞锤装置

Hollow Piston Hammer Device with Air Equilibration and Idle Openings
摘要:
An air spring hammer device comprises a drive piston, moving axially back and forth, with a front face of hollow embodiment and a hammer piston moving in said hollow. A ventilation slot is embodied in a guide wall of the drive piston. The drive piston may be guided in a guide tube. The guide tube comprises several idle openings. A moving control element is arranged on the exterior of the guide tube, in which control openings, corresponding to the idle openings, are provided. In an idle operating mode, the control element is in an open position, via which the ventilation slot, the idle openings and the control openings can be brought into connection with the environment.
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