Invention Grant
- Patent Title: Hand-held power tool with a pneumatic percussion mechanism
- Patent Title (中): 带手动电动工具的气动打击机构
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Application No.: US12218665Application Date: 2008-07-16
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Publication No.: US07802711B2Publication Date: 2010-09-28
- Inventor: Josef Fuenfer
- Applicant: Josef Fuenfer
- Applicant Address: LI Schaan
- Assignee: Hilti Aktiengesellschaft
- Current Assignee: Hilti Aktiengesellschaft
- Current Assignee Address: LI Schaan
- Agency: Abelman, Frayne & Schwab
- Priority: DE102007000391 20070719
- Main IPC: B25D11/10
- IPC: B25D11/10 ; B25D9/26

Abstract:
A hand-held power tool includes a pneumatic percussion mechanism (20) having a driving member (22) reciprocating in the guide tube (21), a percussion member (23) driven by the driving member (22), and an air spring (24) located between the driving member (22) and the percussion member (23) transmits a reciprocating movement of the driving member (22) to the percussion member (23), The hand-held power tool further includes a motor-driven elongate swashplate member (29) for reciprocating the driving member (22) a displacement stroke of which is adjusted by an adjusting member (31) displaceable along a longitudinal extent of a swashplate member (29) for adjusting a swashplate angle that determines the displacement stroke of the driving member (22).
Public/Granted literature
- US20090020302A1 Hand-held power tool with a pneumatic percussion mechanism Public/Granted day:2009-01-22
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