Patent ID: 11878401
Assignee: HILTI AKTIENGESELLSCHAFT
Field: Machine tools (Mechanical engineering)
Classification: CPC B | IPC B

Claim 0:
1. A handheld power tool comprising:
a tool socket for holding a tool along a working axis;
a motor-driven, pneumatic striking mechanism having an exciter driven by a motor, a striker coupled to the exciter via a pneumatic chamber, and an intermediate striker arranged on the working axis in a striking direction, the striker being located between the exciter and the intermediate striker on the working axis and striking the intermediate striker in a working position, the intermediate striker being monolithic;
a ventilation opening connecting a cavity situated between the striker and the intermediate striker to the environment; and
a valve allowing closing and opening of the ventilation opening and being opened when the intermediate striker is moved into the working position counter to the striking direction;
the intermediate striker having a profiled circumferential surface, so that the intermediate striker in the working position does not cover up the ventilation opening and, when moved out of the working position in the striking direction, does cover the ventilation opening.